Apple’s ever-popular iPhone will be coming to yet another prepaid wireless carrier this summer, according to a new Market Watch report. Citing unnamed sources, Market Watch’s Thomas Gryta Tuesday reported on Tuesday that Virgin Mobile USA licensee Sprint would announce this week that Virgin Mobile subscribers will be able to use the iPhone as their device of choice for prepaid voice and data services. Gryta didn’t say exactly when Virgin Mobile would start offering the prepaid iPhone but said it could start as soon as July. Earlier rumors have indicated that Sprint also plans to bring the iPhone to Boost Mobile, another of its prepaid wireless carriers. Regional carrier Cricket, owned by Leap Wireless, was the first carrier to officially offer the iPhone alongside its prepaid plans and is charging users $399.99 for the 8GB iPhone 4 and $499.99 for the 16GB iPhone 4S.