You should get your phone checked out if the screen goes black and won't come back on. There are a few reasons why this would happen. Water damage or a dead battery are a couple of common reasons.
Turn it off then turn it back on
its probs broken
Hardware failure. Check with your carrier about a warranty replacement.
I have a Nokia cell phone I forgot what the name was but it is a flip phone. I've had it for almost two years and since last night its been showing a blank white screen, I can still use it and it still shows the regular screen but its flashing a white screen every 8 seconds and the mini screen on the outside isn't working at all....is there anything I can do to fix it before i take it into AT&T?
One can get a cell phone unlocked by first pressing a button on the phone. Once pressing a button, the screen will turn on providing simple instructions on how to unlock the screen. For example, "Click back then space to unlock the screen."
You pull out the battery and put it back in to "properly" reset it.
Try taking the battery out then put it back in and turn it on.
LG does have a touch screen cell phone. LGs touch screen cell phone is call the VU. It has a 5.0 megapixal three inch screen, built in camera and TV enabled.
get a new phone
Take the battery out while it is on. Wait a minute then put it back in. Turn device on.
if it doesnt turn on once taking the battery out and putting it back it, take it to a mobile/cell shop and get them to fix it.
The best cell phone screen protector is one that fits your screen snugly. As for materials, you will want a glare reducing plastic, which will allow you to see the screen better.