My DroidX2 ended up in the ocean today. I am eligible for an upgrade, but I was planning to wait for the new Iphone 5 before getting a new phone. Obviously I don't have the SIM card, so I am wondering if/how I can buy a used phone to get me through a few weeks or couple of months and get it activated since I don't have my old SIM card. I am a little clueless about all of this so I apologize in advance if this is a very elementary question.