① Avoid abnormal battery or heat dissipation, and don't use the mobile phone in an environment with too high or too low temperature;

② Don't open ROOT permission. If so, it is recommended that you back up your data, update your system again, and select Clear Data to turn off system permissions, and then try again.

(3) Please confirm whether this problem occurs after installing a software recently, and uninstall the software. All third-party software in the mobile phone is recommended that you download and install it in the official app store;

④ Please uninstall the third-party management software, security software and antivirus software in your mobile phone;

⑤ Please back up your own data and try to update your mobile phone to the latest stable version system;

⑥ If the above exclusion scheme is invalid, or the mobile phone is disconnected or flooded recently, please back up the data of the mobile phone, exit the Flyme account, and send the mobile phone for repair and testing in time.