AT&T launched a pilot femtocell sales program in Charlotte, N. C., on Monday, which may help it soothe the feelings of iPhone users who complain about spotty service — if those users buy the carrier’s hardware. Its device, known as the “MicroCell,” uses 3G wireless technology and piggybacks on users’ home Internet service to give them better wireless reception within the home. Introducing the femtocell may also help AT&T cut down on its infrastructure investment, which is expected to cost the carrier up to $18 billion this year.
