1, may be downloaded by the third party software caused by the music security sensitive behavior monitoring (such as the terminal without preset music security, can be downloaded through the following link, need to use the newer Le safe version, some models may not support, http://safe.lenovo.com/down.html), As shown in figures 1-1 to 1-6;
Figure 1-1
Figure 1-2
Figure 1-3
Figure 1-4
Figure 1-5
Figure 1-6
2, if it is not possible to determine whether a third party software caused, you can try to restore factory settings to exclude Third-party software incompatibilities and exceptions, as shown in figures 2-1 through 2-6 (some of the phone's paths are "System Setup" (or "settings")-"privacy"-"Restore factory settings", Restore the factory set up operation will lead to loss of mobile phone data, recommend the backup of good important data and then perform operations;
Figure 2-1
Figure 2-2
Figure 2-3
Figure 2-5
Figure 2-6
3, there may be a problem with the phone's dial-up software, when you can through the "System settings"-(or "settings")-"All settings" (some models do not have this path)-"Application" (or "Application"), then slide to "all", Find and click "Mobile", click "Erase Data", see if the problem is resolved , as shown in figures 3-1 to 3-4;
Figure 3-1
Figure 3-2
Figure 3-3
Figure 3-4
4, if the problem is still, can be contacted near the sale of Lenovo site