Confirm whether the original charger is used; Including charger plug and data cable;
2. Some mobile phones have a fast charge switch, which needs to be turned on in the setting;
3. Check whether the system has a new version, and then upgrade the system.
4. If it doesn't work, back up important data (contacts, text messages, photos, etc.) and try to restore factory Settings.
5. If the problem persists, please take the purchase invoice, repair card and machine to the service center for inspection.