Why doesn't Lenovo s720 mobile phone automatically lock the screen after receiving the SMS?

I am very sorry for the inconvenience caused to your mobile phone.

Test the firmware version of the S720_S 134_ 130205 system in person. After the mobile phone locks the screen, it can automatically lock the screen and close it after the set screen timeout. Please understand.

According to the description, if it is abnormal, it may be caused by the conflict and interference of the desktop, screen lock or SMS software of the relevant third party you are using. I suggest you try to uninstall the relevant software for observation and use.

Or after backing up the important information of the fuselage, restore the factory settings of the mobile phone to see if it can be improved.

If it is not the latest system, it is also recommended that you try to upgrade the system under "System Settings-About Mobile Phone-System Update" and observe its usage.

Because we can't view the details of your mobile phone remotely, if the problem still exists, it can't be effectively solved. We suggest that you take the time to go to the local Lenovo after-sales service center and ask the engineers to help you detect and solve the problem. You can log on to the official website to get the address:/Lenovo/WSI/Station/ServiceStation/default.aspx? intcmp=MIDH

Thank you for your support of Lenovo. I hope the above reply is helpful to you. Wish you a happy life!