Why does only the backlight turn on?

I've had this phone for less than a month, this has been problem for a while now though. I constantly keep my screen on because if the screen is turned off it will take forever for it to decide to turn back on. I keep pressing the power button and I keep taking the battery out and then turning the phone back on but it still doesn't work. I can only see the backlight but the screen display doesn't come on. I want to cry.

Which phone?

Sounds like a defective screen or a defective motherboard. It should have gone back immediately.