Sprint began offering International Wi-Fi calling “back to...

Sprint began offering International Wi-Fi calling “back to the United States” at no additional cost, the company said Thursday. The Samsung Galaxy S 4 with Sprint Spark service will be the first smartphone from Sprint to get international Wi-Fi calling via an over-the-air software update, which will enable subscribers traveling abroad to make and receive calls with the U.S., U.S. Virgin Islands and Puerto Rico at no additional charge while connected to Wi-Fi, the carrier said. Additional Android phones will be compatible following software upgrades later this year, a Sprint spokesman told us. Other phones on the Sprint network equipped for Wi-Fi Calling include various HTC One models, the LG G3, LG G Flex, Samsung Galaxy S 4 Mini, Samsung Galaxy S 5, Samsung Galaxy S 5 Sport, Samsung Galaxy Mega, Samsung Galaxy Note 3 and the upcoming Sharp Aquos Crystal. The spokesman didn’t say whether iPhones or Windows Phone devices would be enabled for Wi-Fi calling, nor did he address whether U.S.-originated international Wi-Fi calling with no additional charges would be available in the future.