1. Restart the phone: After restarting the phone, charge it to see if it is back to normal.
2. Backup data: Back up important data in advance, and go to Glory Authorized Service Center for maintenance with the purchase voucher.
3. Third-party application data migration: backup the important data in the mobile phone, especially the migration of third-party application data such as WeChat (including WeChat avatar) and QQ to avoid the loss of important data.