For the last 2 weeks I have had problems with the touch screen. For an example while texting, although my problem when it is occuring does not pertain only to texting, the letter A when touched types a G instead. I have repeatedly tried to calibrate the touch screen but only recieve a "invalid calibration" warning and returned to the calibration screen. Has anyone else experienced anything similair. I have had the phone for less than a year and have been especially careful with it. If I treated it like my past phones I would have broken it before leaving the store where I purchased it.