My Samsung Brightside is driving me insane! Every time I call someone, like the pharmacy, and try to push the touchscreen keypad to answer all the pharmacy's prompts the screen turns black and I can't get it back. So I always have to use the sliding keyboard which is okay except when a program like that does not understand that I have to press Function and then 3 to get * or # etc. So then it's extremely hard if not impossible to deal with certain programs like that. The phone has done that since I got it several years ago but I've never figured out what to do about it. Can anyone help me?