This is due to 4x4 MIMO (Multichannel In Multichannel Out) and 256QAM (Quad Amp modulation), which the S7 and S7e both had, combined with the new X16 LTE modem found in the SD 835 chip. This allows for full gig transfer speeds.[doublepost=1490818025][/doublepost]Tmo customers will benefit from Samsung's new connectivity technology in the S8: http://www.phonearena.com/news/galaxy-s8-product-video_id92568
T-Mobile says data speeds will double for some customers using the Samsung Galaxy S8 and Galaxy S8+ (VIDEO)