A system update for the T-Mobile variants of the Samsung Galaxy S7 and S7 Edge should improve wireless speeds. Specifically, the update gives the built-in Snapdragon X12 LTE modem support for 256QAM on the downlink and 64QAM on the uplink. These wireless improvements are better table to take advantage of the 4x4 MIMO support pushed to the S7 and S7 Edge last month for a 133% increase in wireless speeds. The update is free to download over the air.


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