My HTCTP2 Crashed a few times and so I had to replace it

Which I can not complain too much, Sprint yanked me around a few times and then gave me a brand new phone.  (all accessories and such) Mine was a little over a year old. 

NOw for the Q... I had to upgrade WM to 6.5  How do I check and see what version is on the new phone I thought I remembered how to do it but OLD has caught up with me. 

I was smart enough get all of my cabs and files on my home pc desktop to easy transfer.