Cricket Wireless says the vast majority of customers have transitioned away from its legacy CDMA network ahead of tomorrow's planned shutdown. AT&T has been moving Cricket customers from the older CDMA network to its own GSM-based network since it acquired the carrier several years ago. Earlier this summer, Cricket said 97% of its customers have made the jump to GSM handsets with lower-than-expected churn rates. Some CDMA customers remain active in California and a few other locations, according to Cricket, though the prepaid carrier declined to say exactly how many. Once the shutdown commences, those customers will lose network access. Cricket has been notifying customers for nearly 18 months of the impending shutdown via text messages, mailers, and emails. Cricket customers using older CDMA-based phones should upgrade their phone as soon as possible in order to maintain service. Cricket's CDMA shutdown follows that of MetroPCS, which T-Mobile shuttered earlier this year.


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