My mobile phone is Lenovo s820. Recently, the display information memory is full and I can't accept incoming messages, but my mobile phone has installed 360 security guards.

First of all, you should restart the mobile phone system and reinstall the SIM card to avoid problems such as abnormal mobile phone system or poor contact with the SIM card.

Secondly, I suggest you try other security software, which may conflict with the system.

I am currently using Tencent mobile phone housekeeper, and I feel that the security protection and management functions of the software are quite perfect, occupying very little mobile phone memory and having excellent compatibility.

At the same time, the software comes with an optimized cleaning function, which can effectively clean the memory of the mobile phone.

Open Tencent Mobile Manager-Cleaning Acceleration-Garbage Cleaning

In addition, the software also supports intercepting incoming calls and text messages, and checks whether there are uncleared spam messages through this function.

Open Tencent Mobile Manager-Protection Monitoring-Harassment Interception