My droid ally doesn't always ring when I get a call. It also doesn't update notifications for texts and email constantly. If I turn the whole unit off then back on, it usually fixes the problem, but if you don't know you got a call/text/email, makes it tough to fix. I received three calls last night without the phone ringing. I turned it off and on today, and at the same time all the notifications started ringing, three texts and 1 voicemail. The call also doesn't come up on the call log if the phone doesn't ring.