Well I charged the ol Blackberry and it got hot when I pressed some buttons, but no screen. Anyway, Google Voice is a good option for non-activated phones - if you can get a wifi signal. We still use landlines and cordless phones, but the range of them and wifi is about the same, as it is with my
cheap FM transmitter that runs day and night continuously broadcasting quality Christian preaching, which range is about 100 feet. Thank God.