iPhone 4 drops calls even when using ATT MicroCell (Video)
June 27th 2010
Touching the lower left corner of the iPhone 4 consistently drops calls. This update uses the AT&T MicroCell to see if that improves call quality.
The MicroCell essentially puts a 3G tower in your home, using your Internet connection for voice calls.
Original Video: iPhone 4 Drops Calls when Left Corner is Touched