1, use the original charger to charge, check whether the full charge time is longer when the shutdown charging;
2, if only boot charging appears, it is recommended to close all background procedures before charging (drop down menu, click a key to clean up);
3, replace the power socket charging attempt;
4, After backing up important information (contacts, multimedia files, etc.), and then restore factory Settings (setting - system \"more\" - restore factory Settings, do not check \"completely clear\"). 1. How to use the App Clone Enter the phone Settings -- App Clone -- select the software that needs to open the app clone -- Open the app clone, turn on the switch, you can generate a new copy of the app on the desktop. The app and the app clone can run simultaneously without affecting each other. For example, after opening the wechat app, you can log in to two wechat apps at the same time. Note: App splitting is only supported by R9s, other models can be implemented with third-party software2. With a fingerprint unlock, why set a password or pattern unlock? This is because if you only use your fingerprint to unlock, in case the fingerprint sensor is faulty, the phone can not be turned on! Use it with a pattern or password, and you can still quickly turn on your phone in case of a problem with fingerprint recognition, ensuring that your phone is always in your control!