There are two reasons: 1. the LCD screen is broken, you need to replace it. 2.It's the software problem, you can try to restore copy factory settings.
Yes it is used in a mobile phone.
No It's Not a Touch Screen Phone
in the screen and handset
The best touch screen mobile phone on the market is the iPhone. The Apple iPhone first debuted in 2007 and has released several updates and versions since. It is the most widely used touch screen mobile phone on the market as well.
How do you repair a virgin mobile phone that's turns on but can't see the screen
nokia 3510i
No, but it has touch sensitive buttons directly under the screen. The actual screen is like any other Virgin Mobile phone.
No, but iPhones do it! :D
LG cookie KP500
take it to the hospital.
"The psp mobile phone has a 3.2 inch touch screen tv cell phone with wifi and java functions, not only relaxing but also handling official business and plays games as well."
It is best of all to use a mobile phone's gps. Mobile phones will get you to the place you want in an easier way. You can control the size of the screen on a smartphone for example. There are spoken instructions in a mobile phone.