The screen has gone darh, not showing anything but

What is your phone model?

These answers were given assuming that you're using a LG smartphone with a touch screen :

Scenario 1 : Can you see the screen lights up and any sort of graphical image when you hear incoming message ?
A : If you can, and still you cannot slide unlock, your touch screen has gone. Get a replacement touch.

Scenario 2 : You cannot see anything on the screen. It stays dark when you hear incoming messages/calls
A : Your LCD has gone. A replacement LCD or a Touch/LCD combo would fix the issue.

I hope you saved your back by either way.

the best thing u can do is update ur phone software

The fault is from either the flex that connects the screen to the phone's main board or the fault is from the screen itself. You need to take your phone to a technician for check up so that you will know specifically where the fault is coming from.

Best wishes

Here's a link to a possible solution; http://www.iusermanual.com/cell-phone/samsung-flipshot-sch-u900-cell-phone-user-manual.htm

you can download the manuals.

Hope it helped you!

Dont forget rating.

strip problem so change the strip.....

dear,

if it shows logo only then u have to reformat your phone and if it doesnt show anything except white screen then try to call on that set if the ringer rings and the call is listen then its mean the lcd is gone ..you have to change it..

goodluck...

flash u r phones software

You either have a bad Power Supply or a bad Main bd. Worst case can be the inverters on the Panel have gone bad in which case the Panel needs to be replaced.

If you are using a case, the iPhone 3G and original iPhone cases are not compatible, so it may be covering the proximity sensor. If you have a case or something else on the phone, try taking it off. When the proximity sensor detects something covering it, the screen will go off to help preserve battery life (such as when the phone is up to your face) however if a case is covering it, it will assume that it still needs to be off.

Without knowing your model of phone it probably needs the firmware updating or, more likely, the backlight on the LCD screen is knackered. To test, turn on your phone in a dark room and shine a torch onto the screen. If you can see some of the screen then the bscklight has gone. Also try connecting the phone to your PC & updating the firmware.