Dear expert, i have some problem with my tmobile htc hd2, i bought from ebay & it was unlocked until few weeks ago it worked normally. but one day the problem happened, i can't acces my pictures/files in my sd card. it said "sd card is full/missing". i tried to find the answer but nothing worked. so i used it for few weeks. then one day when i browsed the internet, suddenly this phone had a new problem,hangs.... i did the soft reset.but i can't slide the lock bar above. i have to press the red button & slide the lock bar for many times until it can be unlocked. but if i press the back button then slide the lock bar,usually worked. i upgraded the software in tmobile last week. and the result is: the sd card can be read again.but the lock bar still the same, won't unlock after i pressed the red button, it only work when i pressed the back button then slide the lock bar. would you please help me to fix this problem? i live outside us, so i can't take it back to tmobile. i called the htc care, but they said that they can't help... thank you very much for your help, regards, PJ