Ursprünglicher Beitrag von: BurnieG ,
Has the phone been dropped or exposed to liquid or any other damage that may have brought on these issues? If you have a warranty still in place I would take the phone in and have it repaired or replaced. If not then try these steps: If you have your data backed up or don't care about loosing your saved data then you might want to try a hard reset/factory reset. There are three different ways to do this but I am going to mention one because the other two ways require a viewable screen. A hard reset can fix a number of issues with phones but do not always solve the problem. Make sure, that your phone is off. Now press and hold these buttons: Volume Down + Volume Up + Power key. Next from the menu choose "Wipe Data/Factory Reset", using Volume buttons to scroll to option, and Power button, to confirm operation. Then select "yes", and confirm with Power button. After that press Power button to enter option "reboot system now". If this doesn't help then you may want to disassemble the phone and look at the connections inside the phone. Your LCD may have a loose connection and may need to be reseated or it may have been damaged and need replaced.