Should I Keep A Free Cell Phone Line That I Can't Actually Use?

Should I Keep A Free Cell Phone Line That I Can't Actually Use?

John has a mobile phone service dilemma. He writes that he’s not able to get any reception in the dorm room where he lives. Even his carrier, AT&T, seems to have admitted defeat and has offered to waive the bill for his line for the next six months. John wonders whether he should give up on AT&T and change to a carrier that actually works. [More]