How do I know if I need to reset my phone to factory settings?

[AC Question]

how do i know if i need to reset my phone to factory settings?

Let my cousin use my phone while i was in jail, now it just aint the same. Sometimes it freezes or locks up or doesnt recognize commands or repeats the command.

 

[B. Diddy]

Re: how do i know if i need to reset my phone to factory settings?

Welcome to Android Central! Which phone? Do you know if your cousin installed new apps?