i have a mytouch 4g that i am having issues with first off when i try to turn on the phone the scrren just lights up and the phone vibrates. after a minute of so, the mainscreen pops up and say no sim card, however the screen is upside down... if i try to touch the sceen, it goes blank. my main concern if i cant get this phone to work, is all my contacts. the guy at tmobile was not helpfull and just wanted to sell me a new phone.... any help greatly appreciated