i haven't had much luck recently with my iphone 4.. firstly i bought it on pay and go so i could sell it eventually and not be bound to a contract, i denied insurance at the shop as i was going to look online and then never got around to it. i've had it for about 10 months, and not a problem. early this week i dropped it while it wasn't in the bumper and the glass cracked, but not enough to damage the touch screen and it wasn't too bad either, so i kept using it. then a couple days ago i dropped it in a lake and it sat there for a couple days, then i got it out. it's also fallen in a toilet and a bucket of water and has never had any problems from those. since it's taken a nap in a lake i've had some problems getting it going again. it synced with itunes after a reset and restore, everything was working fine until the backlight to the screen went, then i found out the speaker and microphone don't work either. seeing as i have no insurance i've come up with a plan.. let me know if you think this will work.. buy an iphone off ebay with a software problem, take the motherboard out and put my working one in. does that work??? then sell the completely broken iphone to one of those "we buy your mobile phone" to get some cash for it. is this the greatest plan ever or just dumb??? worth a try right?