Talking [Q] Just bough a "Broken" One X...

hey guys,
i just got home and bought a "Broken" one X, it was laying in a cabinet and i asked if i could play around with it in the store.
after a while i got it to turn on, and it seems ok now, its charging and everything works, did not test the sim card yet though..
so my question is, what else should i look for?? is there anything i might have missed or did i just get lucky??

thanks for your time. Tim