How to restore factory settings on iqooz3

How to clear all data: Go to phone settings--system management--backup and reset--clear all data (this operation will delete all data in the system space, including: text messages, contacts , notes, etc.).

Warm reminder: If you do not check formatting the mobile phone USB flash drive or SD card, the data in the mobile phone USB flash drive and SD card will not be deleted.

Enter Cloud Service--Device Cloud Backup--Backup Data Type--System Data--Return--Back Up Now to back up some system settings and desktop layout; Cloud Service--Data Synchronization--Turn on WLAN , Bluetooth, etc. can synchronize data to cloud services.