CN101610500A - Mobile phone data retrieving method, mobile phone and mobile phone data retrieving system - Google Patents
Mobile phone data retrieving method, mobile phone and mobile phone data retrieving system Download PDFInfo
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- CN101610500A CN101610500A CNA2009101599495A CN200910159949A CN101610500A CN 101610500 A CN101610500 A CN 101610500A CN A2009101599495 A CNA2009101599495 A CN A2009101599495A CN 200910159949 A CN200910159949 A CN 200910159949A CN 101610500 A CN101610500 A CN 101610500A
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Abstract
The invention discloses a kind of mobile phone data retrieving method, mobile phone and mobile phone data retrieving system.Described mobile phone data retrieving method comprises: mobile phone receives the protection triggering note that alternate device sends, and described protection triggers in the note and carries the triggering password; Described mobile phone triggers the triggering password that carries in the note in the mode of running background according to the described protection of the triggering password authentification that sets in advance; If described triggering password is by checking, described mobile phone sends to alternate device in the mode of running background with data in mobile phone.Technical scheme provided by the invention can be applied to the data retrieving of mobile device, has solved the problem of data in mobile phone shortage safeguard protection.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of mobile phone data retrieving method, mobile phone and mobile phone data retrieving system.
Background technology
Along with weeding out the old and bring forth the new of mobile phone technique, smart mobile phone is popularized gradually.Smart mobile phone generally all can be supported the various mobile phone memory cards expanded, and T-Flash card for example is so smart mobile phone can be stored lot of data, as phone directory, picture, audio frequency and video file, document, personal information, schedule, stroke etc.Along with the function of mobile phone is day by day powerful, the user is also slowly improving the degree of dependence of mobile phone, and much very important information all is stored in the mobile phone concerning the user, and this way is very convenient really, but has also brought many hidden danger.In case mobile phone is lost, the various important information of the inside also just can't be given for change, has brought great inconvenience for work and life, and more seriously some individual privacy information may be used to seek undue profits by unique people.
Mobile phone can guarantee the safety of the data of storing in the mobile phone by the mode of cryptoguard, and what a password promptly is set in mobile phone in advance, input password when start; The functional module that perhaps is respectively in the mobile phone respectively is provided with a password, in the time of the function of use module, will input corresponding password, if password bad, mobile phone will be refused operation.
Use said method mobile phone to be protected there are the following problems:
After mobile phone was lost, even mobile phone can't be used by other people again, the data in the mobile phone can not be given for change, to loss greatly of user Lai Shuoshi; In addition; smart card in the mobile phone (as SIM card, UIC card) and extension storage card also store lot of data; this partial data can't be protected by these means of password are set to mobile phone; therefore, to mobile phone password is set and very protects data in mobile phone intelligent card and the extension storage card effectively.
Summary of the invention
The invention provides a kind of mobile phone data retrieving method, mobile phone and mobile phone data retrieving system, to solve in the prior art to the ineffective problem of data protection in the mobile phone.
For addressing the above problem, the invention provides a kind of mobile phone data retrieving method, comprising:
Mobile phone receives the protection triggering note that alternate device sends, and described protection triggers in the note and carries the triggering password;
Described mobile phone triggers the triggering password that carries in the note in the mode of running background according to the described protection of the triggering password authentification that sets in advance;
If described triggering password is by checking, described mobile phone sends to alternate device in the mode of running background with data in mobile phone.
Further, described mobile phone sends to data in mobile phone after the step of alternate device in the mode of running background, also comprises:
Described mobile phone is removed the total data of storing on this mobile phone.
Further, described mobile phone data retrieving method also comprises:
Described mobile phone detects the phone number of the current use of this mobile phone when each update cycle or start.
Further, the protection that described mobile phone receives the alternate device transmission triggers before the step of note, also comprises:
Described mobile phone sends the phone number of current use at least one safety means that set in advance;
Described alternate device obtains the current use phone number of described mobile phone from described at least one safety means;
Described alternate device sends described protection to described phone number and triggers note, carries the triggering password in the described triggering note.
Further, described mobile phone data retrieving method also comprises:
If do not have smart card in the described mobile phone, the described mobile phone of automatic blocking then.
For addressing the above problem, the present invention also provides a kind of mobile phone, and described mobile phone comprises:
The note receiver module, the protection that the alternate device that is used for receiving sends triggers note and sends password authentication module to, and described protection triggers in the note and carries the triggering password;
Password authentication module is used for verifying that with the backstage operational mode protection that described note receiver module receives triggers the triggering password that note is carried;
Data transmission blocks is used for when the checking of described triggering password by described password authentication module, in the mode of running background data in mobile phone is sent to alternate device.
Further, described mobile phone also comprises:
The data dump module is used for after described data transmission blocks sends described data in mobile phone, and data clear all.
Further, described mobile phone also comprises:
The number detection module is used for when each update cycle or start the phone number of the current use of detection of handset;
The number sending module is used for the current use phone number of the detected mobile phone of described number detection module is sent to safety means;
Lock modules is used for when described number detection module detects mobile phone and do not have smart card the automatic blocking mobile phone.
For addressing the above problem, the present invention also provides a kind of mobile phone data retrieving system, and described system comprises mobile phone and alternate device;
Described mobile phone, be used to receive the protection triggering note that alternate device sends, described protection triggers in the note and carries the triggering password, verify that in the mode of running background described protection triggers the triggering password that carries in the note, and at described triggering password by when checking, in the mode of running background data in mobile phone is sent to alternate device;
Described alternate device is used for sending described protection to mobile phone and triggers note, and described protection triggers in the note and carries the triggering password, receives and store the data in mobile phone that described mobile phone sends.
Further, described mobile phone data retrieving system also comprises safety means;
Described safety means are used to receive and store the phone number of the current use that described mobile phone sends;
Described mobile phone also is used for sending to described safety means the phone number of current use;
Described alternate device also is used for obtaining from described safety means the phone number of the current use of described mobile phone.
By technical scheme of the present invention; when needs are given data in mobile phone for change; obtain the phone number of the current use of mobile phone; carry the protection that triggers password by alternate device to one of mobile phone transmission and trigger note, trigger data passback flow process is after mobile phone receives protection triggering note; the triggering password that carries in this note is verified; and trigger password by checking after, send data in mobile phone in the mode of running background to alternate device, realized giving for change of data in mobile phone.Whole process is all carried out in the mode of running background, without any embodiment, has avoided this operation to be found by the current user of mobile phone on user interface, has further guaranteed the safety of data in mobile phone.After transfer of data is finished, the total data on the mobile phone is finished removing, effectively stoped the outflow of data in mobile phone.
Description of drawings
Fig. 1 is for being provided with the flow chart that triggers password and safety means in the embodiments of the invention one;
The flow chart of a kind of mobile phone data retrieving method that Fig. 2 provides for embodiments of the invention one;
The internal structure schematic diagram of a kind of mobile phone that Fig. 3 provides for embodiments of the invention two;
The internal structure schematic diagram of a kind of mobile phone that Fig. 4 provides for embodiments of the invention three;
The internal structure schematic diagram of a kind of mobile phone that Fig. 5 provides for embodiments of the invention four;
The structural representation of a kind of data retrieving system that Fig. 6 provides for embodiments of the invention five.
Embodiment
For the problem that the data that solve in the lost mobile phone can't be given for change, embodiments of the invention provide a kind of mobile phone data retrieving method, below in conjunction with specific embodiment, this method are elaborated.
The mobile phone data retrieving method that embodiments of the invention one provide, obtain the telephone number of the current use of lost handset from safety means by alternate device, carry the note that triggers password by sending to lost handset, trigger the data passback flow process of mobile phone, data in the mobile phone are sent on the alternate device, to realize giving for change of data.
At first, trigger password and safety means and describe to the process that safety means send phone number being provided with, this process comprises as shown in Figure 1:
In this step,, be used for triggering flow process to alternate device passback data in mobile phone at first for mobile phone is provided with the triggering password.But this password is a character string that comprises some typing characters, and the figure place of password is arbitrarily, and figure place is many more, the confidentiality of password is also just high more, consider that the operand that brings when figure place is too much is excessive, the embodiment of the invention is that example describes with 8 passwords, but is not limited thereto.
After setting up the triggering password, the user also can trigger password to this and make amendment.
Safety means can be other mobile phones, or other any equipment that can receive the information that mobile phone sends by carrier network, and the embodiment of the invention is that example describes with safety means for another mobile phone, claims that this mobile phone is safe machine.
In this step, the number storage of safety machine in mobile phone, is got up safe machine and mobile phone association, when finding that phone number changes, send the phone number of current use to the safety machine.
Can set the replacement criteria of the phone number read current use for mobile phone, for example set the time cycle of a renewal,, change under the situation of smart card in start like this, also can read the phone number after the replacing as per hour upgrading once; Replacement criteria also can be a special event, is to read phone number as start.Mobile phone reads the phone number of self current use according to described replacement criteria, and this number is sent to safe machine.Can be for the safe machine of mobile phone association more than two ones or two ones, under the situation that has multi-section safety machine, only also can select to send the phone number of the current use of mobile phone to safe machine wherein.
Optionally, also the number storage that mobile phone can be used is at this mobile phone, in next update time, if the number that is using that mobile phone reads is consistent with number storing in this mobile phone, then do not send the phone number of current use to the safety machine, inconsistent then transmission is with conserve network resources.
Optionally, in order further to increase fail safe, if mobile phone is when reading number, find not insert smart card in this mobile phone, the automatic blocking mobile phone makes mobile phone can only carry out urgent call; Also can limit the use to this mobile phone, i.e. when the user will visit some data (for example address list or short message) needs input to trigger password and just can finish visit.In order further to guarantee the safety of data in mobile phone,, can not delete and write operation data in mobile phone even can also stipulate to trigger the cryptographic acess data by input.
When step 103, mobile phone change at the number that detects use, send the phone number of current use at least one safety means;
In this step, if the number that mobile phone reads is inconsistent with the number of last storage, then the safe machine that is provided with in step 102 sends the phone number of current use.
The note that sends the phone number of a little current uses of mobile phone to the safety machine can be a special note, for example adds sign for this note, and what show this note transmission is the phone number of the current use of mobile phone.
In this step, after safe machine receives the note that mobile phone in the step 103 sends, be the sign of the current use number of mobile phone, so the phone number of the current use of mobile phone that receives is stored because note has what show that this note sends.
If stored the number of this mobile phone this moment in the safe machine, then replace original stored phone number with the phone number that newly receives.
Need to prove that step 103 and step 104 are all finished in the mode of running background, on the user interface of mobile phone without any embodiment.
So far, the early stage of mobile phone, setting was finished.After this, if mobile phone is lost, a kind of mobile phone data retrieving method that the cellphone subscriber just can provide by the embodiment of the invention is with mobile phone data retrieving, and idiographic flow comprises as shown in Figure 2:
In this step, can obtain the phone number of the current use of lost mobile phone by the safety machine.
Alternate device can be another mobile phone, so long as can send note and receive the equipment of the data that lost handset sends to lost handset, all can be used as alternate device, in the embodiment of the invention with alternate device for another mobile phone be that example describes, claim that this mobile phone is a backup machine.
In this step, the phone number that obtains in step 201 by backup machine sends note, and the content of note is described triggering password.
When mobile phone received a note, in fact mobile phone will carry out some consistency operations earlier, just information was shown on the user interface.
In this step, receive protection at mobile phone and trigger note and carry out the stage of consistency operation described triggering password is verified.
Concrete proof procedure is as follows:
Protection is triggered note triggering password that carries and the triggering password that presets mate by turn successively, if promptly first of two passwords unanimity mated second again, second unanimity mated the 3rd again, and the rest may be inferred.As long as run into inconsistent password position, just jump out the flow process of password authentification, the note that receives is shown on the user interface.
If step 204 triggers password by checking, mobile phone sends to alternate device in the mode of running background with data in mobile phone;
In this step; if the triggering password that the protection that step 203 receives triggering note is carried is by checking; then trigger the data passback flow process in the mobile phone; mobile phone will be in the mode of running background; send data in mobile phone by Email, note or multimedia message to backup machine, as address list, short message, multimedia file or the like.
If the hardware and software of mobile phone and backup machine is all supported the E-mail address, then the mode with Email sends data in mobile phone; Otherwise just the mode with note or multimedia message sends data in mobile phone.
Those skilled in the art know that obviously note and Email are not the form of only transmitting cell-phone data, any can be between mobile phone and alternate device the method for transmitting cell-phone data, all within protection scope of the present invention.
Because data quantity stored is very big in the mobile phone, in order to improve data transmission efficiency, the cellphone subscriber can be provided with the data that need passback when normally using mobile phone, as the important phone that pre-sets, important note, and important multimedia file (supports all under the situation of multimedia message that at mobile phone and alternate device multimedia resource can send by the mode of multimedia message; In order to improve efficiency of transmission, also can when setting in advance, limit the size of the multimedia file of passback), when the transmitting cell-phone data, only transmit these data or these data of prioritised transmission.
Optionally, under the situation that mobile phone is lost, be not used for illegal purposes by other people in order to guarantee the data in the mobile phone, can after having transmitted the data in mobile phone that needs the total data of storing in the mobile phone be removed, concrete steps are as follows:
In this step, mobile phone can all be removed the total data of storing in mobile phone storage, extension storage card and smart card, like this, has just guaranteed that data can not outflow, and have further strengthened fail safe.
This step is not to carry out, and can the operation of transmission data and deleted data be separated for this step and step 204 are provided with different triggering passwords respectively yet, obtains data when needs obtain data in mobile phone, deleted data when needing the deletion data in mobile phone.
The mobile phone data retrieving method that the embodiment of the invention provides not only is applicable to the situation that mobile phone is lost, and when for example going to work mobile phone is dropped on family, and the associated person information in the mobile phone just can obtain by step 204 so.
The mobile phone data retrieving method that the embodiment of the invention provides, at first, mobile phone triggers password for being provided with one, and the current use number of mobile phone sent on the safety means, when needs are given data in mobile phone for change, obtain the phone number of the current use of mobile phone, send a note that carries described triggering password by alternate device to mobile phone, trigger data passback flow process has realized giving for change of data in mobile phone.Whole process is all carried out in the mode of running background, without any embodiment, has avoided operation to be found by the current user of mobile phone on user interface, has further guaranteed the safety of data in mobile phone.After transfer of data is finished, the total data on the mobile phone is finished removing, effectively stoped the outflow of data in mobile phone.
Embodiments of the invention two provide a kind of mobile phone, and the internal structure of this mobile phone comprises as shown in Figure 3:
Note receiver module 301, the protection that the alternate device that is used for receiving sends triggers note and sends password authentication module to, and described protection triggers in the note and carries the triggering password;
Data transmission blocks 303 is used for when the checking of described triggering password by described password authentication module 302, in the mode of running background data in mobile phone is sent to alternate device.
Further, embodiments of the invention three provide a kind of mobile phone, and described mobile phone also comprises as shown in Figure 4:
Further, embodiments of the invention four provide a kind of mobile phone, and described mobile phone also comprises as shown in Figure 5:
Number detection module 305 is used for when each update cycle or start the phone number of the current use of detection of handset;
Number sending module 306 is used for the current use phone number of described number detection module 305 detected mobile phones is sent to safety means;
Lock modules 307 is used for when described number detection module 305 detects mobile phone and do not have smart card the automatic blocking mobile phone.
Further, described lock modules 307 can also detect when not having smart card in the mobile phone at described number detection module 305, the function of described mobile phone is used in restriction, as when the user will visit some data (for example address list or short message), needs the described triggering password of input just can finish visit.In order further to guarantee the safety of data in mobile phone,, can not delete and write operation data in mobile phone even can also stipulate to trigger the cryptographic acess data by input.
Embodiments of the invention five provide a kind of mobile phone data retrieving system, and the structure of this system comprises mobile phone 601 and alternate device 602 as shown in Figure 6.
Further, described mobile phone data retrieving system also comprises safety means 603.
Described mobile phone 601; be used to receive the protection triggering note that alternate device 602 sends; described protection triggers in the note and carries the triggering password; verify that in the mode of running background described protection triggers the triggering password that carries in the note; and at described triggering password by when checking, in the mode of running background data in mobile phone is sent to alternate device 602.
Described alternate device 602 is used for sending described protection to mobile phone 601 and triggers note, and described protection triggers in the note and carries the triggering password, receives and store the data in mobile phone that described mobile phone 601 sends.
Described safety means 603 are used to receive and store the phone number of the current use that described mobile phone 601 sends.
Further, described mobile phone 601 also is used for the phone number to the current use of described safety means 603 transmissions;
Described alternate device 602 also is used for obtaining the phone number of the current use of described mobile phone from described safety means 603.
Above-mentioned mobile phone and mobile phone data retrieving system, can combine with a kind of mobile phone data retrieving method that embodiments of the invention provide, at first, mobile phone triggers password for being provided with one, and the current use number of mobile phone sent on the safety means, when needs are given data in mobile phone for change, obtain the phone number of the current use of mobile phone, send a note that carries described triggering password by alternate device to mobile phone, trigger data passback flow process has realized giving for change of data in mobile phone.
One of ordinary skill in the art will appreciate that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the described protection range of claim.
Claims (10)
1, a kind of mobile phone data retrieving method is characterized in that, comprising:
Mobile phone receives the protection triggering note that alternate device sends, and described protection triggers in the note and carries the triggering password;
Described mobile phone triggers the triggering password that carries in the note in the mode of running background according to the described protection of the triggering password authentification that sets in advance;
If described triggering password is by checking, described mobile phone sends to alternate device in the mode of running background with data in mobile phone.
2, mobile phone data retrieving method according to claim 1 is characterized in that, described mobile phone sends to data in mobile phone after the step of alternate device in the mode of running background, also comprises:
Described mobile phone is removed the total data of storing on this mobile phone.
3, mobile phone data retrieving method according to claim 1 is characterized in that, also comprises:
Described mobile phone detects the phone number of the current use of this mobile phone when each update cycle or start.
According to claim 1 or 3 described mobile phone data retrieving methods, it is characterized in that 4, the protection that described mobile phone receives the alternate device transmission triggers before the step of note, also comprises:
Described mobile phone sends the phone number of current use at least one safety means that set in advance;
Described alternate device obtains the current use phone number of described mobile phone from described at least one safety means;
Described alternate device sends described protection to described phone number and triggers note, carries the triggering password in the described triggering note.
5, according to claim 1 or 3 described mobile phone data retrieving methods, it is characterized in that, also comprise:
If do not have smart card in the described mobile phone, the described mobile phone of automatic blocking then.
6, a kind of mobile phone is characterized in that, comprising:
The note receiver module, the protection that the alternate device that is used for receiving sends triggers note and sends password authentication module to, and described protection triggers in the note and carries the triggering password;
Password authentication module is used for verifying that with the backstage operational mode protection that described note receiver module receives triggers the triggering password that note is carried;
Data transmission blocks is used for when the checking of described triggering password by described password authentication module, in the mode of running background data in mobile phone is sent to alternate device.
7, mobile phone according to claim 6 is characterized in that, also comprises:
The data dump module is used for after described data transmission blocks sends described data in mobile phone, and data clear all.
8, mobile phone according to claim 6 is characterized in that, also comprises:
The number detection module is used for when each update cycle or start the phone number of the current use of detection of handset;
The number sending module is used for the current use phone number of the detected mobile phone of described number detection module is sent to safety means;
Lock modules is used for when described number detection module detects mobile phone and do not have smart card the automatic blocking mobile phone.
9, a kind of mobile phone data retrieving system is characterized in that, comprises mobile phone and alternate device;
Described mobile phone, be used to receive the protection triggering note that alternate device sends, described protection triggers in the note and carries the triggering password, verify that in the mode of running background described protection triggers the triggering password that carries in the note, and at described triggering password by when checking, in the mode of running background data in mobile phone is sent to alternate device;
Described alternate device is used for sending described protection to mobile phone and triggers note, and described protection triggers in the note and carries the triggering password, receives and store the data in mobile phone that described mobile phone sends.
10, a kind of mobile phone data retrieving system according to claim 9 is characterized in that, also comprises safety means;
Described safety means are used to receive and store the phone number of the current use that described mobile phone sends;
Described mobile phone also is used for sending to described safety means the phone number of current use;
Described alternate device also is used for obtaining from described safety means the phone number of the current use of described mobile phone.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009101599495A CN101610500A (en) | 2009-07-23 | 2009-07-23 | Mobile phone data retrieving method, mobile phone and mobile phone data retrieving system |
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| CNA2009101599495A CN101610500A (en) | 2009-07-23 | 2009-07-23 | Mobile phone data retrieving method, mobile phone and mobile phone data retrieving system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101772018A (en) * | 2010-01-21 | 2010-07-07 | 中兴通讯股份有限公司 | Theft preventing mobile terminal and theft preventing method of mobile terminal |
| CN102196414A (en) * | 2010-03-05 | 2011-09-21 | 阿尔卡特朗讯 | Method and device for acquiring data in user terminal equipment |
| CN103246841A (en) * | 2012-02-09 | 2013-08-14 | 富泰华工业（深圳）有限公司 | Unlocking password resetting system and method of electronic device |
| CN103281192A (en) * | 2013-05-31 | 2013-09-04 | 腾讯科技（深圳）有限公司 | Method, device and system for retrieving data |
| CN104270527A (en) * | 2014-10-07 | 2015-01-07 | 宁夏天纵泓光余热发电技术有限公司 | Mobile phone capable of actively passing back address book through biotechnology characteristics |
| CN105992121A (en) * | 2015-02-03 | 2016-10-05 | 中兴通讯股份有限公司 | Method and apparatus of establishing antitheft dialogue |
| CN106250049A (en) * | 2015-06-15 | 2016-12-21 | 数据通信科学技术研究所 | Remove the method for data in mobile phone, management terminal and mobile phone |
| CN106529319A (en) * | 2016-11-30 | 2017-03-22 | 广东欧珀移动通信有限公司 | File protection method and device, and terminal |
| CN108738012A (en) * | 2018-05-08 | 2018-11-02 | 深圳市沃特沃德股份有限公司 | Alternate device document method and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772018A (en) * | 2010-01-21 | 2010-07-07 | 中兴通讯股份有限公司 | Theft preventing mobile terminal and theft preventing method of mobile terminal |
| US8811949B2 (en) | 2010-01-21 | 2014-08-19 | Zte Corporation | Anti-theft mobile terminal and anti-theft method for mobile terminal |
| CN102196414A (en) * | 2010-03-05 | 2011-09-21 | 阿尔卡特朗讯 | Method and device for acquiring data in user terminal equipment |
| CN103246841A (en) * | 2012-02-09 | 2013-08-14 | 富泰华工业（深圳）有限公司 | Unlocking password resetting system and method of electronic device |
| CN103281192A (en) * | 2013-05-31 | 2013-09-04 | 腾讯科技（深圳）有限公司 | Method, device and system for retrieving data |
| CN103281192B (en) * | 2013-05-31 | 2015-07-15 | 腾讯科技（深圳）有限公司 | Method, device and system for retrieving data |
| CN104270527A (en) * | 2014-10-07 | 2015-01-07 | 宁夏天纵泓光余热发电技术有限公司 | Mobile phone capable of actively passing back address book through biotechnology characteristics |
| CN105992121A (en) * | 2015-02-03 | 2016-10-05 | 中兴通讯股份有限公司 | Method and apparatus of establishing antitheft dialogue |
| CN106250049A (en) * | 2015-06-15 | 2016-12-21 | 数据通信科学技术研究所 | Remove the method for data in mobile phone, management terminal and mobile phone |
| CN106529319A (en) * | 2016-11-30 | 2017-03-22 | 广东欧珀移动通信有限公司 | File protection method and device, and terminal |
| CN108738012A (en) * | 2018-05-08 | 2018-11-02 | 深圳市沃特沃德股份有限公司 | Alternate device document method and terminal |
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