How to reset to factory settings on android?
Very important ! before You factory reset your Android Smartphone
And how does this generally affect the hardware?
How To Reset (Factory Reset) Your Android Phone (Hindi)
I reset the BQ 5020 STRIKE phone to factory settings, after that I chose the language, connected to the Internet, the "Connection test" window appeared. And there is an endless download. Tried restarting - it did not help.