Customers of AT&T will soon be able to buy into an option that makes the phone work the way it’s supposed to, for the one-time low price of $150. It’s called the Microcell–just set up this little baby wherever you happen to be–it supports up to 4 phones at a time and it taps into an existing DSL or Cable connection, becoming its own AT&T mini-tower. (DSL or cable connection not included, AT&T subscription also not included). This has been in limited rollout for a few months in Raleigh, NC and one or two other cities, but it’s being made available nationally now, and you can almost hear the…