A black screen makes it very hard to do anything on a smartphone! Let's see what can be done! What was going on with the phone prior to it going blank? Have you tried to plug it into a wall outlet or USB on a computer? Did you download an apps recently that seemed to slow down the phone or affect it differently? Now, if it was ringing while on a black screen that at least tells us it's not the network or battery. It's something in the phone. If you are under your 1-year warranty and there is no damage to the device, it can be replaced free of charge. Please update us as to your status and if you still need assistance.
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