Blackberry passport right upper side too hot and restart

My blackberry passport always gets very hot on the right upper side corner, and always restart by itself. I took it to axiom as it is under warranty they told me there is a problem in the battery that they change it and they installed a new os. After I took back after 1 hour same problem happened. I went to the main store of blackberry the store manager told me we can't help you have to take again to axiom. I did later wipe by myself and same problem happening. Is there any solution for this?

Posted via CB10

There might be several cause for the heating right side corner of your Passport,
First security Wipe your phone and don't install any android apps for a week and see how your phone acts

Helalzone

Thanks a lot I will try it

Posted via CB10