JP2007135153A - Mobile telephone having remote lock function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable locking of outgoing functionality etc. of a mobile telephone based neither on personal identification number nor password by easy operation from remote in order to prevent unauthorized use by a finder when the mobile telephone is lost. <P>SOLUTION: The mobile telephone 10 has a mode in which functional limit is set so that arbitrary functionality cannot be acted among a plurality of functionalities and operation is performed and has an operational mode which locks so that the mobile telephone is not operated. The mobile telephone 10 is provided with an incoming call detecting portion 29, a lock processing portion 31 and a storage means which registers and memorizes a particular telephone number beforehand. If the incoming call detecting portion 29 detects incoming call from a telephone number registered into the storage means, the lock processing portion 31 sets functionality of the mobile telephone phone 10 into a lock status. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile phone having a remote lock function, and in particular, when a parent is allowed to have a child, it operates by setting function restrictions so that any function of the various functions of the mobile phone cannot be used. A mobile phone having a remote lock function that can lock the outgoing function of the mobile phone by a simple remote operation so that the mobile phone has a mode to perform unauthorized use by the finder if the mobile phone is lost It is about telephone.

  With the development of information processing technology and communication technology in recent years, various portable information communication terminal devices (hereinafter referred to as mobile terminal devices) have become widespread. Such a mobile terminal device is connected to an information distribution server or a desired website that provides various services via a network such as the Internet when the user is out, or receives the service, or acquires information, It is possible to obtain information necessary for business by connecting to the company's network.

  Recently, the hardware and software functions of mobile phones have been enhanced, and the functions of conventional mobile terminal devices have been enhanced, and there is a remarkable increase in the penetration rate of mobile phones. The number of operators providing data communication services using mobile phones is increasing, and various services such as banking, Internet sales, navigation, vending machines, payment for transportation and convenience stores, etc. using mobile phones. It has become possible to receive. In particular, mobile phones can be equipped with various options and applications, and the types of services that can be used are increasing.

  In addition, a mobile phone called the third generation is equipped with a GPS receiver, can measure the current position (latitude / longitude) where the mobile phone itself is located, and a navigation system using the mobile phone as a terminal device is also available. It has been put into practical use. Using such a positioning system, various utilization systems have been studied for confirming the positions of elderly people, children, etc., and confirming the positions of incidents such as crimes and fires, and reports in accidents.

  Furthermore, the user installs various applications developed for mobile phones such as browsers, applications, and game software provided by service providers on his / her own mobile phones to add desired services and functions. Because it can be customized.

  In recent years, with the spread of mobile phones, the age of users has fallen and has spread to children. For example, there is a method in which a parent can have a mobile phone for a child who goes out for safety so that he / she can always contact his / her home.

  In this way, when a child has a mobile phone, among the various functions of the mobile phone, a function that restricts (locks) functions other than necessary (referred to as junior mode (registered trademark) or kids mode). ) Is commonly used. As described above, a mobile phone having a mode in which a function restriction is set so that an arbitrary function cannot be used among various functions of the mobile phone is disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-277930 described below. Is disclosed.

  Using this function, for example, incoming calls can be made unlimited, outgoing calls can be made only to specific phone numbers, or restrictions can be set for mail service and data communication service functions that use the Internet. it can. As a result, when the child is given it, it is not possible to make a mischief call by setting it so that the call can be made only at home. In addition, if it is given to an employee, it cannot be used for private use by setting it so that it can only be sent to the company.

In addition, mobile phones are likely to be stolen or lost due to the nature of being used outdoors. If it is used by a theft, the usage fee will be charged by the operator. In order to solve such problems, the following Patent Document 2 (Japanese Patent Laid-Open No. 11-32369) discloses a portable communication device that can lock various functions of a cellular phone.

  This portable communication device disclosed in Patent Document 2 includes an answering machine, an operation unit for operating various functions such as “calling function” and “phone book function”, and a lock for setting / releasing various functions. When a message recording means is activated to communicate with another communication device by transmitting from an external communication device to a portable communication device having means / unlocking means, The lock means can be operated by remote control.

That is, the portable communication device disclosed in Patent Document 2 is configured to be able to perform various operations such as dial lock and telephone directory lock by remote operation from other communication devices using the answering machine. As a result, even if the device is stolen in a state where the key lock is forgotten, the key can be locked remotely from another telephone, so that unauthorized use by others can be prevented. Become.
Japanese Patent Laying-Open No. 2005-277930 (FIG. 1) JP 11-32369 A (FIG. 3, paragraphs [0049] to [0051])

In general, lock / unlock functions on mobile phones by setting a password or password, and performing or releasing the specified lock function after performing an authentication process by matching the entered password or password. Is configured to do.

  By the way, in the case where a child has a mobile phone having a mode of setting a function restriction so that an arbitrary function cannot be used among various functions, such as the mobile phone disclosed in Patent Document 1 above. The mobile phone is used in a state in which the lock function is released (a state in which the lock function is disabled). If the child accidentally operates the mobile phone in the key lock state, the lock cannot be unlocked if the password or password for unlocking is not known or forgotten. In that case, for example, it becomes useless in an emergency that involves getting involved in an accident or incident and requiring contact. This is because it is necessary to disable the lock function in order to prevent such inconvenience.

  In this case, if the child loses or misplaces the mobile phone with the lock function disabled, the mobile phone may be illegally used by another person who has picked up the mobile phone. For this reason, if the technology disclosed in Patent Document 2 is applied so that the lock function of the mobile phone can be changed to an effective state by remote control, the above-described disadvantage can be dealt with.

  However, when the technique disclosed in Patent Document 2 is applied, it is necessary to perform an authentication process using a personal identification number or a password in order to put the mobile phone in a key lock state. Security codes and passwords that can be estimated from others, such as addresses and birthdays, are less secure, so it is common to use numbers and characters that cannot be estimated by others. is there.

  If such a personal identification number or password is not used for a long period of time, even the person who set it will often forget it. If there is no memo recorded with the password or password set in an emergency, the authentication process can be passed even if the function to lock the mobile phone remotely is prepared as described above. The inconvenience that this function cannot be executed without fail.

  The inventor of the present application has conducted various studies in order to eliminate the above inconvenience, and as a result, in a mobile phone having a mode in which a function restriction is set so that an arbitrary function cannot be used among various functions of the mobile phone. When there is a communication that includes a signal that activates the key lock function when an incoming call is received from a telephone having a specific telephone number, for example, a parent mobile phone or a fixed telephone, the mobile phone is changed to a locked state. The inventors have conceived that the above inconvenience can be solved by doing so, and have completed the present invention.

  That is, in the present invention, in a mobile phone having a mode in which a function restriction is set so that an arbitrary function out of various functions of the mobile phone cannot be used, if the mobile phone is lost, it is illegally used by a finder. Therefore, an object of the present invention is to provide a mobile phone having a remote lock function that can lock the outgoing function of the mobile phone without relying on a password or password by a simple operation from a remote location.

  In order to solve the above-mentioned problem, the invention according to claim 1 of the present application includes a mode in which function restriction is set so that an arbitrary function cannot be used among a plurality of functions, and a mobile phone is locked so as not to operate. In the mobile phone having the operation mode, the mobile phone includes an incoming call detection unit, a lock processing unit, and storage means for registering and storing a specific telephone number in advance, and the incoming call detection unit is registered in the storage means When an incoming call from a telephone number is detected, the lock processing unit sets the function of the mobile phone to a locked state.

  According to a second aspect of the present invention, in the mobile phone according to the first aspect, the incoming call detected by the incoming call detection unit is an incoming call from the registered telephone number and is an incoming call for the lock processing. In this case, the lock processing sets the function of the mobile phone to a locked state.

  The invention according to claim 3 of the present application is the mobile phone according to claim 1, wherein the incoming call detected by the incoming call detection unit is an incoming call from the registered telephone number and includes a predetermined key input code. In some cases, the lock processing unit sets the function of the mobile phone to a locked state.

  According to claim 4 of the present application, in the mobile phone according to claim 1, when the incoming call detection unit detects an incoming call from the registered telephone number a predetermined number of times within a predetermined time, the lock processing unit The mobile phone function is set to a locked state.

  According to a fifth aspect of the present invention, in the mobile phone according to the first aspect, when the incoming call detection unit detects an incoming call from the registered telephone number continuously within a predetermined time, the lock process. The unit sets the function of the mobile phone to a locked state.

  The invention according to claim 6 of the present application is the mobile phone according to claim 1, wherein the incoming call detection unit receives an incoming call from a telephone number registered in the telephone directory set with the function restriction in the operation mode in which the function restriction is set. When detected, the lock processing unit sets the function of the mobile phone in a locked state.

  In the invention according to claim 1, the mobile phone includes an incoming call detection unit, a lock processing unit, and a storage unit that registers and stores a specific telephone number in advance, and the incoming call detection unit is registered in the storage unit. When an incoming call from a telephone number is detected, the lock processing unit sets the function of the mobile phone to a locked state.

  As a result, when the mobile phone used in the function restriction mode is used in a state where the lock mode is released, and it is lost or misplaced, the parent mobile phone, home landline phone, parent work phone For example, the mobile phone can be set to the lock mode by remote control from a telephone having a specific telephone number set in advance. In this way, authentication processing using a password or password is not required, so that even if these are forgotten, the mobile phone can be locked by remote control.

  In the invention according to claim 2, in the mobile phone according to claim 1, the incoming call detected by the incoming call detection unit is an incoming call from the registered telephone number, and is an incoming call for the lock processing. In some cases, the lock process sets the function of the mobile phone to a locked state. In this way, authentication processing using a password or password is not required, so that even if these are forgotten, the mobile phone can be locked by remote control.

  In the invention according to claim 3, in the mobile phone according to claim 1, the incoming call detected by the incoming call detection unit is an incoming call from the registered telephone number and includes a predetermined key input code. If it is, the lock processing unit sets the function of the mobile phone to the locked state. In this way, authentication processing using a password or password is not required, so that even if these are forgotten, the mobile phone can be locked by remote control.

  In the invention according to claim 4, in the mobile phone according to claim 1, when the incoming call detection unit detects a predetermined number of times from the registered telephone number within a predetermined time, the lock processing unit Set the mobile phone function to the locked state. In this way, authentication processing using a password or password is not required, so that even if these are forgotten, the mobile phone can be locked by remote control.

  According to a fifth aspect of the present invention, in the mobile phone according to the first aspect, when the incoming call detection unit detects an incoming call from the registered telephone number continuously within a predetermined time, the lock The processing unit sets the function of the mobile phone to the locked state. In this way, authentication processing using a password or password is not required, so that even if these are forgotten, the mobile phone can be locked by remote control.

  According to a sixth aspect of the present invention, in the mobile phone according to the first aspect, the incoming call detection unit receives an incoming call from a telephone number registered in a telephone directory in which the function restriction is set in the operation mode in which the function restriction is set. Is detected, the lock processing unit sets the function of the mobile phone to a locked state. In this way, authentication processing using a password or password is not required, so that even if these are forgotten, the mobile phone can be locked by remote control.

Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. The embodiments shown below exemplify a cellular phone for embodying the technical idea of the present invention, and are not intended to specify the present invention for this cellular phone. It is equally applicable to the mobile phones of other embodiments included in the above.
FIG. 1 is a block diagram showing a configuration of a mobile phone according to a first embodiment of the present invention, and FIG. 2 is an external view showing an external appearance of the mobile phone of FIG. The block diagram of FIG. 1 shows the configuration of the mobile phone 10 including the character input device 21 according to the first embodiment of the present invention. The mobile phone 10 includes a call unit 11 and an operation control unit 21 according to the present invention. The calling unit 11 includes a microphone 12, a speaker 13, and a wireless unit 14. The wireless unit 14 includes an antenna, a transmission / reception circuit, a modulation / demodulation circuit, a compression / decompression circuit, a voice codec, and the like. The voice input from the microphone 12 is transmitted as a voice signal, and the voice signal of the other party of the call is received and output to the speaker 13.

  The operation control unit 21 includes a main control unit 22, a display unit 23, an operation unit 24, a function control unit 25, a function restriction table 26, a mode control unit 27, a mode storage unit 29, an incoming call detection unit 29, and a lock processing unit 31. Configured. The main control unit 22 includes a microcomputer, a RAM, a ROM, and the like and functions as a computer device, and controls the above-described units of the radio unit 14 and the operation control unit 21. The display unit 23 and the operation unit 24 are used for operations and displays for data communication via the Internet network in addition to displays and operations for calls on the mobile phone 10. The operation unit 24 is used for inputting a desired character string in order to input a telephone number during a call and to use various data communication services via an Internet network such as an electronic mail.

  The operation unit 24 is provided with a call key 241, a function selection key 243, and a numeric keypad 245. When a call is made, the numeric keypad 245 is operated to input a telephone number and the call key 241 is operated to make a call. Further, alphanumeric characters, katakana and hiragana characters are assigned to the numeric keypad 245, and character code conversion is performed by an alphanumeric kana conversion control unit (not shown). The character code conversion is converted into an input character code corresponding to each operated key depending on whether the input mode is alphanumeric kana or kana-kanji conversion mode. The function selection key 243 is a key for enabling a predetermined function of the mobile phone 10, and the function assigned to this key differs depending on the manufacturer and model.

  FIG. 2 is a diagram showing an appearance of the mobile phone 10 shown in FIG. The cellular phone 10 includes a display unit 23 and an operation unit 24 configured by a liquid crystal display unit or the like. The operation unit 24 is provided with a call key 241, a function selection key 243, and a plurality of numeric keys 245. A mode key without a number, a cursor key for operating a specific display image on the screen displayed on the display unit 23, and the like are provided.

  The mobile phone 10 has a “function restriction mode” so-called “junior mode (registered trademark)” that is set to operate when a child has a function restriction, and a “lock mode” that prohibits a calling function when the mobile phone is lost. "have. A function for providing a restriction in the function restriction mode is to display a setting input screen on the display unit 23, select a function to be restricted from among the displayed functions, and input a restriction condition when a condition is imposed on the restriction. Can be determined. The functions selected in this way and the input conditions are stored in the function restriction table 26, and the function control unit 25 operates only the functions permitted for the mobile phone 10 based on the information stored in the function restriction table 26. Let

  FIG. 3 is a diagram showing a data configuration of the function restriction table 26. As shown in FIG. 3, the function restriction table 26 includes a function code field 261, a function name field 262, a condition field 263, and a restriction field 264. When setting a function restriction, the user selects a function to be restricted, On (ON) and off (OFF) are set in the restriction column 264. Functions set to on are restricted, and functions set to off are not restricted.

  For example, in FIG. 3, “call” indicates a call function from the mobile phone 10, and the function is restricted because “ON” is set in the restriction column 264. In the condition column 263, a registered telephone number is set as a function restriction condition. The registered telephone number is a telephone number that permits the mobile phone 10 to make a call. For example, a telephone number that allows a child to make a call, such as a parent's mobile phone number or a telephone number of a home landline, is set. This registered telephone number may be stored in a specific storage area, or a method may be used in which a flag indicating a registered telephone number that permits outgoing calls is stored in the telephone number registered in the telephone directory. The same setting is made for the e-mail transmission function.

  As for the incoming call function, “OFF” is set in the restriction column 264, and the incoming call to the mobile phone 10 is allowed unconditionally. The same settings are made for voice mail recording and incoming mail. Regarding the function of the telephone book and the function of the data communication application, “ON” is set in the restriction column 264, nothing is set in the condition column 263, and use is restricted unconditionally. That is, it is prohibited to newly register a telephone number or mail address in the telephone directory. It is also prohibited to use various data communication services via the Internet.

  In addition to the above function restriction mode, the mobile phone 10 has a lock mode for locking a function such as outgoing calls when it is not in use in case the mobile phone is left behind or lost, and when the function restriction mode is set. The lock mode is released. The reason for this is that, as described above, if the child accidentally operates the mobile phone 10 set in the function restriction mode and sets it in the lock mode, the password or password is not informed or forgotten. In this case, the lock mode cannot be released, and inconveniences such as inability to call the parent in an emergency occur.

  The setting status of the function restriction mode and the lock mode is stored in the mode storage unit 28, and the mode control unit 27 controls the operation of the mobile phone 10 according to the settings stored in the mode storage unit 28. When the function restriction mode is set as described above and the lock mode is released, if the child misplaces or loses his / her mobile phone, the mobile phone is illegally used by the finder, and the charge must be borne. It may not be possible.

  Therefore, when the mobile phone 10 is lost or misplaced, it is necessary to be able to set the mobile phone 10 to the lock mode by some method. In this case, if a personal identification number or password is used to call the lost mobile phone from another telephone and set the mobile phone 10 to the lock mode, the setting process to the lock mode may not be performed in a short time. is there. This is because if you do not use it for a long time, you may forget your PIN or password, and you may not be able to find a memo that records this.

  In this embodiment, paying attention to the mobile phone 10 used in the function restriction mode, a specific telephone number set in advance, such as a parent mobile phone, a home landline phone, or a parent work phone The mobile phone 10 is set to the lock mode when it is detected that the call is an incoming call from the telephone and a lock mode setting signal is transmitted. In this case, control is performed such that authentication processing using a password or password is not performed.

  That is, the present invention authenticates the presence / absence of the authority to set the lock mode by an incoming call from a specific telephone number instead of authentication by a password or password. For this reason, in the first embodiment, the mobile phone 10 includes an incoming call detection unit 29 and a lock processing unit 31. As described above, the incoming call detection unit 29 detects whether a call is received from a telephone having a specific telephone number preset in the mobile phone 10, for example, a parent mobile phone.

  When the incoming call detection unit 29 detects an incoming call from a telephone with a specific phone number set in advance, the lock processing unit 31 of the mobile phone 10 receives a specific code set in advance or a specific key input code. Lock function. The lock process may be a process of invalidating all key inputs, but may be a process of prohibiting outgoing calls or prohibiting activation of the data communication function. Moreover, the structure which performs a lock process when it is not a telephone call signal irrespective of transmission of a specific code may be sufficient.

Further, as a method of determining whether or not the incoming call is for a lock process, (1) the lock process is performed when a predetermined number of calls are detected from a telephone having a specific telephone number set within a predetermined time. (2) A method of determining that the incoming call is for lock processing when there are a predetermined number of incoming calls, (3) A function restriction is provided in the phone book, If only the phone number is registered, it is possible to take a method such as determining that an incoming call from the phone number registered in the phone book is an incoming call for lock processing, and so on. Can increase the sex.
As described above, the present invention is used in a state in which the mobile phone 10 used in the function restriction mode is released from the lock mode. When the mobile phone 10 is lost or misplaced, the parent mobile phone or home landline phone is used. If the incoming call is detected from a telephone having a specific telephone number set in advance, such as the telephone of the parent's office, and the incoming call is determined to be communication for setting the lock mode, the mobile phone 10 is Can be set to lock mode. In this way, authentication processing using a password or password is not required.

  Next, the operation of the mobile phone 10 will be described with reference to the flowcharts shown in FIGS. FIG. 4 is a flowchart showing the operation procedure of the mobile phone when setting the function restriction mode. FIG. 5 is a flowchart when the parent remotely locks the mobile phone when the mobile phone 10 is lost or misplaced. It is a flowchart which shows the operation | movement procedure of a mobile telephone.

  When the user sets the function restriction before the parent hands over the mobile phone 10 to the child, as shown in the flowchart of FIG. 4, the operation unit 24 is operated in the process of step S11 to select the restriction mode setting process. In step S12, the function to be restricted is selected from the function list displayed on the display unit 23. Then, in step S13, the operation unit 24 is operated to perform on / off setting and condition setting (see FIG. 3). .

  Next, it is determined whether or not the user has finished the setting process in the process of step S14. If the setting process has not been completed, the process returns to step S12. If the setting process has been completed, in step S15, the main control unit 22 locks the key input or the like of the mobile phone 10. Set to the state where is canceled. The change to the lock mode release state may be directly set by the user from the operation unit 24. However, it is preferable that the lock mode is automatically released by the function restriction mode setting process.

  When the parent sets the mobile phone 10 to the lock mode remotely when the mobile phone 10 set in the function restriction mode is lost or misplaced, the parent is registered in advance in the mobile phone 10 in the flowchart shown in FIG. The mobile phone 10 is called from the mobile phone number, that is, the mobile phone of one's own mobile phone, home landline phone, or work phone.

  When the mobile phone 10 receives an incoming call in the process of step S21, the incoming call detection unit 29 determines whether the incoming call is from a telephone having a telephone number registered in advance in the mobile phone 10 in the process of step S22. If the incoming call is not from the telephone having the registered telephone number, the process proceeds to step S25, where the mobile phone 10 performs a normal incoming call process, and ends the process when the incoming call process ends.

  If it is detected in the determination process of step S22 that the incoming call is from the telephone having the registered telephone number, it is determined whether or not the incoming call is for setting the mobile phone 10 in the lock mode in the process of step S23. Is done. This determination is performed by receiving a specific code set in advance as described above, or by the methods (1) to (3) described above.

  FIG. 6 is a diagram illustrating the configuration of the mobile phone 10 according to the second embodiment of the present invention. A cellular phone 10 shown in Example 2 in FIG. 6 has basically the same configuration as that of the cellular phone 10 according to Example 1. In FIG. 6, the same components as those in FIG. It is. The mobile phone 10 according to the second embodiment is different from the first embodiment in that an authentication processing unit 30 is provided.

  As in the case of a conventional mobile phone, the authentication processing unit 30 rewrites various setting information of the mobile phone 10 or enables a specific function when a password or password registered in advance in the mobile phone is input. Used for. Similar to the mobile phone 10 of the first embodiment, the mobile phone 10 has a “function restriction mode”, a so-called “junior mode (registered trademark)”, and a “lock mode” that prohibits a calling function when the mobile phone is lost. ing.

  If the mobile phone 10 is lost or misplaced, the mobile phone 10 is set to the lock mode by calling the mobile phone 10 from a telephone having a specific telephone number registered in advance as in the first embodiment. can do. In this case, authentication processing using a password or password is not required.

  In the mobile phone 10 of the second embodiment, the authentication processing unit 30 is provided. When the telephone having the registered specific telephone number cannot be used, for example, the parent inputs a personal identification number or password from a public telephone or the like from the outside. In response to the authentication process, the mobile phone 10 can be set to the lock mode.

  As described above, according to the mobile phone according to the second embodiment, the mobile phone 10 used in the function restriction mode is used in a state in which the lock mode is released, and if the mobile phone 10 is lost or misplaced, Detects that the incoming call is from a phone with a specific phone number, such as a mobile phone, home landline phone, or parent's work phone, and determines that this incoming call is a communication for setting the lock mode. In such a case, the mobile phone 10 can be set to the lock mode. Also, when using a public telephone outside the office, the lock mode can be set after authentication with a password or password.

It is a block diagram which shows the structure of the mobile telephone concerning Example 1 of this invention. It is an external view which shows the external appearance of the mobile telephone of FIG. It is a figure which shows the data structure of the function restriction | limiting table which sets the function restriction | limiting of a mobile telephone. It is a flowchart which shows the operation | movement procedure of a mobile telephone at the time of setting function setting mode. It is a flowchart which shows the operation | movement procedure of a mobile telephone at the time of locking a mobile telephone from remote. It is a block diagram which shows the structure of the mobile telephone concerning Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Mobile phone 11 ... Call part 12 ... Microphone 13 ... Speaker 14 ... Wireless part 21 ... Operation control part 22 ... Main control part 23 ... Display part 24. ..Operation unit 25... Function control unit 26... Function restriction table 27... Mode control unit 28... Mode storage unit 29.

Claims (6)

In a mobile phone having a mode in which a function restriction is set so that an arbitrary function cannot be used among a plurality of functions and an operation mode in which the mobile phone is locked so as not to operate.
The mobile phone includes an incoming call detection unit, a lock processing unit, and a storage unit that registers and stores a specific telephone number in advance, and the incoming call detection unit detects an incoming call from the telephone number registered in the storage unit Then, the mobile phone having a remote lock function, wherein the lock processing unit sets the function of the mobile phone to a locked state.   When the incoming call detected by the incoming call detection unit is an incoming call from the registered telephone number and is an incoming call for the lock processing, the lock processing unit locks the function of the mobile phone. The mobile phone having a remote lock function according to claim 1, wherein the mobile phone has a remote lock function.   When the incoming call detected by the incoming call detection unit is an incoming call from the registered telephone number and includes a predetermined key input code, the lock processing unit locks the function of the mobile phone. The mobile phone having a remote lock function according to claim 1, wherein the mobile phone has a remote lock function.   The lock processing unit sets the function of the mobile phone to a locked state when the incoming call detection unit detects an incoming call from the registered telephone number a predetermined number of times within a predetermined time. A mobile phone having the remote lock function described in 1.   When the incoming call detection unit detects an incoming call from the registered telephone number continuously for a predetermined number of times within a predetermined time, the lock processing unit sets the function of the mobile phone to a locked state. A mobile phone having a remote lock function according to claim 1.   When the incoming call detection unit detects an incoming call from a telephone number registered in the phone book set with the function restriction in the operation mode in which the function restriction is set, the lock processing unit sets the function of the mobile phone to the locked state. The mobile phone having a remote lock function according to claim 1.

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