Proximity sensor doesn't work when placing a call. How can I retrieve important voice mails if proximity sensor will not open dial pad after a dialed number? No screen protector in place so that is not an issue. Shaking phone after dark screen at start of call has no effect. Without a dial pad, I cannot continue to enter my voice mail access codes, etc. Unit is only 2 months old - worked fine until about 2 weeks ago. Lots of similar proximity issues with this and other makes of phones. Can it be turned off? I don't need to press my ear against phone, so am not worried about possible accidental hang ups, etc. I just NEED MY VOICE MAIL ACCESS!