How to Format OPPO A37 or hard reset
Format OPPO A37 or hard reset Entering Recovery menu on OPPO A37 Using the hardware keys to remove password, PIN or reset the unlock pattern / gesture lock when you are unable to access the phone. Turn off the phone completely. Press and hold both Volume DOWN + POWER buttons until the phone turns on and OPPO logo shows up. Language selection menu will appear on the screen. Select English Next in ColorOS RECOVERY menu select Wipe data Select the desired option - wipe application data and be sure to select or not your important data like SMS messages, if you want to delete everything select wipe all data and removable application. Notification pop-up window will appear alert you that you have to re-enter your previous gmail account after you wiped out everything to enter the system. Be sure to remember your gmail account. Select OK on the screen. Data and cache wiped successfully. All data will be lost! Before doing a hard reset backup all important data. Once you do