1, in the "standby interface" to find and click "Le Security", as shown in Figure 1-1;
2, enter the "Le Security" click on the top left corner of the "menu" icon (you can also click on the lower left corner of the screen "menu key"), as shown in Figure 1-2;
3, in the pop-up menu select "About", as shown in Figure 1-3;
4, at this time can be seen "le security" software version number, as shown in Figure 1-4;
5, such as version number before the version of v5.1.8, please select "Update" in Figure 1-3, and then click "Le safe version update" to the right side of the "Update", as shown in Figure 1-5, 1-6;
6, according to the corresponding prompts to click "Immediately update", update the "Le Security" to the latest version, and observe whether the problem persists, as shown in Figure 1-7;
Figure 1-1
Figure 1-2
Figure 1-3
Figure 1-4
Figure 1-5
Figure 1-6
Figure 1-7
If the problem persists after performing the above operation, please go to the nearby Lenovo Mobile repair site to upgrade or repair.