Touch not waking up from Sleep Mode for Calls and TXT

[rhondaxoxo43]

i have the xv6900 htc touch from verizon. I have this same problem that once it sleeps it doesnt wake up for phone calls, texts, alarms, nothing. Has nothing to do with battery level, I can be fullly charged. My phone is virgin out of box. No up grades or changes. My phone has been replaced 3 times. same issues. Just wanted to let everyone know it is not sprint only. it is a manufacturer problem not a network problem.