I've had the XV6900 for about 60 days. I love the phone but missing 50-75% of incoming calls. Not sure why.. working w/technician who has heard of this problem before but doesn't have answers. Didn't notice this the first month. (of course during warrantee) Outgoing calls are fine, but if called from any network, (Verizon, sprint, etc) and the display is turned off, as soon as I power up, I get notified of a missed call and voicemail if the person left one. Pretty consistent and can duplicate problem. Really seems like a power saver issue but techs dont believe there are any other settings than the ones we have already tried.