Huawei mate20pro has emergency backup.

When "Emergency Backup" mode appears, it can be restored by the following steps:

1. When entering the "emergency backup" mode, select the "restart" option to restart the mobile phone and enter the system normally;

2. If you still enter the "emergency backup" mode after restarting the phone, you can select the "data backup" option. At present, NM card, OTG and other devices are supported as storage media for data backup.

Tip: The data types backed up by devices such as NM card and OTG include: contacts, information, call records, pictures, music, videos, memos, recordings, schedules, documents, applications and data, system settings, etc. (EMUI 10。 X and above systems: non-preset third-party applications cannot back up application data. )

3. User data backed up to NM cards, OTG and other devices can be recovered through the backup recovery application on normal Huawei mobile phones;

4. After data backup, select the option of "Restore Factory Settings" to try to restore the mobile phone;

5. If you still can't enter the normal interface after restoring the factory settings, please take the purchase voucher to Huawei customer service center for testing and processing.

Related links are as follows: consignment service Huawei customer service center booking service, maintenance, spare parts price inquiry.