In our description database there are 2 solutions for performing hard reset for Oppo A37.
Choose the first method and follow the steps to perform a hard reset. If the first solution does not work, try the next method.
Please remember! Hard reset will delete any and all data your device contains; like pictures, contacts, messages, apps etc. Everything. Oppo A37 device will be brought back to the same configuration as that of a brand new device.
1. Power up the phone by pressing the Power button.
2. Open Main Menu and go to Settings > Backup and Reset > Factory Data Reset.
3. Continue by selecting Reset Phone > Erase Everything.
4. Done! Your phone should now reset and restart.