I just got my iphone a few weeks ago, and got it unlcked last week. SInce then it has completly gone black once like a 4 days ago and currently has no service. I have taken it back to get ulcked once and they did it and was told that the next time it does this just put my sim in another phone and make a call then put it back. Is it commen that I loose service so much tho, it lost service yesterday and again today and I am completely lost as to why its doing this. Does this mean that everytime Im in an area that tmobile doesnt have service my iphone will completely lock up causes me to loose my contacts and pictures and texts and all that grat stuff Please help because I have spent almost 600$ on this phone and am so mad. Everything was completely brand new and has only been plugged into itunes once?