AT&T announced the nationwide launch of the 3G MicroCell today at CTIA. The MicroCell will be available in mid-April. For those who don’t know what a MicroCell is, it allows customers to make phone calls and dataconnections across a home broadband connection. This allows for users that live in low-coverage areas to get service in their home. The Microcell will be available for a one time fee of $149.99. It costs $19.99 a month to make unlimited calls through the 3G MicroCell.