Ok so i have the HTC Hero little over a month now.. but i still have my old Touch Pro 1.. basically i used a uprgrade. So my brother lost his phone couple weeks ago and i wanted to get him a new phone for Christmas .. So my question is. if i change my phone back over to the TOuch Pro 1 can i use my warranty (tep) that same week to get a new phone then swithc it back to theHero??