dont worry, bring it back to the store you got it from....
not even 2 weeks here and my RAZR HD LTE is having reboot issues.
i've read alot about the screen and rebooting issues,,,
at least i got it from BestBuy and went for their P.E.P warranty
which means i can change it for any other phone i want
with same value $ or pay the diff if its more.