Viettel brings the eSIM technology to Laos, on its way to tran...
VIENTIANE, Laos, March 27, 2019/PRNewswire-AsiaNet/-- Unitel -- Viettel's brand in Laos, has officially become the country's first mobile network operator to launch eSIM technology. eSIM is a sim card built into a phone that allows users to change carriers using their phone settings rather than inser...
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