20 Most Recent HTC AT&T Titan PI39100 Mint Cell Phone - Page 5 Questions & Answers

Your screen is bad, the only fix is a screen replacement.

Go in settings > Apps > Car. Click on "Force Stop" and "Disable" this will make the app unusable and will no longer give you an error message

try holding ,,,im not sure if its up or down volume and power key for 10 seconds to reset the phone

see if this link helps you out. Where is my family set up located on HTC windows 8x Google Search

You may try default phone and security code to remove restrictions. ur defalt phones codes is 12345 or 00000 u can use it Default 4 Digit user code: 1234 or 0000 Default 6 Digit Security code: 123456 or 000000 Type *#06# at the mobile screen to know IMEI no of your mobile. send the IMEI no to me and i will reply you with unlocking code. IF Problem not Solved So Please New Software install in the Phone Problem will Solved

Go to Settings/About/Software updates and select from options there.

First try a new sim card.