Sometimes...my Droid doesn't ring and several hours later, it vibrates for voice mails. When I check them, they are several hours old. I don't have any notification of missed calls nor do I have it in my call log. The people tell me it rings 4/5 times and then they get my voice mail. I've had a Blackberry for 4 years and never had this problem at my home...which I work from home. This has never happened until I got my Droid. I'm on my 3rd one and I'm taking it back and going to get a new Blackberry...I'm tired of all the problems of the Droid.