A screenshot of a Samsung Galaxy Note 4 in Service Mode, taken by a T-Mobile customer, shows that the phablet is connected to LTE Band 12 (700MHz) in Detroit. T-Mobile has been adding 700MHz spectrum in some markets, some of it purchased from Verizon earlier this year. Earlier this month, LTE Band 12 was spotted by T-Mobile users operating in Long Island and in Houston.
According to the Service Mode, the T-Mobile pipeline on LTE Band 12 has a 5MHz x 5MHz bandwidth. This past Summer, T-Mobile CFO Braxton Carter said that eventually, all of the metro areas where T-Mobile operates will offer bandwidth of 20MHz x 20MHz. Larger bandwidth allows more traffic to use the carrier's pipeline, without suffering the network congestion that usually slows down data speeds.
At left, Service Mode on a Samsung Galaxy Note 4 shows the device is using 5MHz x 5MHz LTE Band 12; at right is a screenshot of a speed test, showing the speed of T-Mobile's 4G LTE network
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Alan, an ardent smartphone enthusiast and a veteran writer at PhoneArena since 2009, has witnessed and chronicled the transformative years of mobile technology. Owning iconic phones from the original iPhone to the iPhone 15 Pro Max, he has seen smartphones evolve into a global phenomenon. Beyond smartphones, Alan has covered the emergence of tablets, smartwatches, and smart speakers.
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