I did a soft reset on my VZW 650 (because I was getting the dimming screen after 15 second).

When the 650 rebooted, it kept coming up with a lit, but all gray screen, from which it wouldn't recover from.

I removed the battery, and did a warm reset. After that, I had no phone app. The hard button for phone would just bring me to the Calendar app. Tapping the "phone" icon would do the same. If I got an incoming call, the Treo would reset when I tried to answer it.

I did a partial hard reset (pressing down, not to erase all data), and it seems to have addressed the issue.

Anyone else ever see the phone app "go away"?