So I bought a G1 off ebay for a good deal from someone who didn't know what the problem was they just said they couldn't get it to work. I got it and did a factory reset and that seemed to work. However I don't currently have a T-mobile service and so I don't have a SIM card to put in it and try. It comes up to the emergency call screen and the touch screen and everything is responsive. However if I don't push anything for about ten-fifteen seconds the screen goes black. The buttons still light up when I push them but the screen doesn't show anything. If any one has any tips to help me get this thing working I'd appreciate it very much!!!!