Can someone tell me why (or even better - How To Resolve) the keypad disappears while I'm on a phone call and need to use the keypad for any particular reason? It's quite frustration you can't "Press 1" for this or that for example. The keypad is either flashing as I tilt it or remove from my face or it simply just disappears to a black screen whereby a press of the side power button or the bottom wake button makes NO difference on the screen coming back to view the keypad. Hope this makes sense! It's Sunday so I don't think Sprint Service Stores can resolve this issue today. IDK.
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