i have a blackberry bold 9700. it was working fine and call quality was great, but i only recently activated blackberry services, before that i was just using it as a phone. after i activated the blackberry services the call quality changed there seems to be interference, i cant hear or be heard properly, its like it goes mute and back on on a rhythmic pattern every second( 1- 2 second intervals). what happend? has this happen to anyone? help