Every time my phone has frozen which is maube once a week or less i wait for a minute or less and it unfrezzes its self this usualy only happens when i habe alot ofstuff running and a lot in my notification barwile playing riveria oh and i dont think the phones reboot necause of heat mine got covered by a couch cusion for ten minutes wile playing dark legends it never froze or rebooted but it was so hot it almost burnt my hand i turned it off but when i tryied to charge it i got a blue circle over the batteryr charg.le anamation i unpluged and removed the battery for 10 minutes and every thimg was fine