Republic Wireless, an MVNO that operates on Sprint's network, says it has signed a deal with a GSM-based carrier and will expand service with a GSM smartphone later this year. Republic's SVP of sales Lon France told Fierce Wireless the device will be a high-end Motorola handset, though he didn't name the exact model nor the new carrier partner (likely T-Mobile). The company will also introduce a new version of its WiFi calling app when GSM-based services become available. The company is targeting March or April for the GSM launch


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