Answer
Factory reset Samsung Galaxy a10 follow the instructions below:
Turn off SAMSUNG GALAXY A10 (SM-A105F / SM-A105G) Press and hold together : Power Button + Volume Up until Logo appear, then release all button. Please wait until we see the menu at LCD screen, choose Wipe Data/Factory Reset with Volume Button to select and use Power Button to ok or enter.
How To Reset Samsung Galaxy A10 – Hard Reset
Samsung Galaxy A10 Hard Reset । Samsung Galaxy A10 Pattern Reset
How do I factory reset my Samsung Galaxy a10?
Turn off SAMSUNG GALAXY A10 (SM-A105F / SM-A105G) Press and hold together : Power Button + Volume Up until Logo appear, then release all button. Please wait until we see the menu at LCD screen, choose Wipe Data/Factory Reset with Volume Button to select and use Power Button to ok or enter.