Despite aggressive campaigns to attract customers with lower mobile phone prices, T-Mobile has been losing large numbers of its most lucrative...

 Despite aggressive campaigns to attract customers with lower mobile phone prices, T-Mobile has been

losing large numbers of its most lucrative two-year contract subscribers. Management wants to know

why so many customers are leaving T-Mobile and what can be done to entice them back. Are customers

deserting because of poor customer service, uneven network coverage, wireless service charges, or com-

petition from carriers with Apple iPhone service? How can the company use information systems to

help find the answer? What management decisions could be made using information from these

systems?