Why won't Sony Xperia U show anything on the display?

 i have a Sony xperia u. The  display is not turning on...but phone turns on( i mean the blue strip led  below display turns on)  , I want to know what will be repairing charges of this phone. Is it repairable..?




Maybe the phone just froze. Try reinstalling the battery and turn it on again. If it's still the same, I highly suggest having it checked, you may just need a screen replacement.



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