I am curious to know if anyone else has had an issue with their screen blacking out while using the number keys during a call? This has happened four times to me, and I called Verizon, but thought maybe I had put my finger on the on/off switch by accident. However, this happened Saturday again, and I was SURE I did not touch that area of the phone. Please let me know if this has happened to you so we can document this issue with Verizon/HTC.