A federal judge in Boston on Monday granted an injunction against Boston Communications Group, Inc., which provides customer management solutions for prepaid wireless companies. The injunction says that companies using BCGI’s solutions for their prepaid wireless programs, including Cingular Wireless, must stop accepting new customers and shut down their services within 90 days.

Choosing a wireless phone provider can be a daunting task. There are many providers, each with a dizzying array of service plans. The task gets even more complex if you are shopping for prepaid wireless service.

Verizon Wireless on Monday announced the launch of its EasyPay prepaid wireless plans, providing blocks of time for a set monthly charge, similar to common postpaid plans.