This problem just started today. When I receive an incoming call, the phone vibrates only. I made sure the volume control is up. I have tried numerous ringtones but to no avail. If I go to Caller ID Readout under the Call Settings section, The phone will identify the name of the caller but then vibrates, no ringtone. I've tried just using the standard Droid ringtones instead of the downloaded ringtones that are on the phone. NO LUCK. Anyone have any ideas? If I have to do a hard reset, I guess that will be my only option. I already tried taking the battery out several times, and that didn't work. Please Help.