On T-Mobile, things got interesting. T-Mobile’s network forced my S21 into
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chance of overloaded networks in crowded conditions, but you end up with
slower overall speeds because you’re losing the add-on 4G components.
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12ms latency, which was much slower than my Galaxy S20+ and iPhone 12. By
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very similar to both the S20+ and the iPhone 12. T-Mobile told me, essentially,
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On T-Mobile, the S21 should be able to combine the carrier’s two current main
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do, but I didn’t see that happening; the phone was always on n41 or n71. That
isn’t down to the phone, though. The network just wasn’t ready.
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devices still tend to max out around 600Mbps in real-world speeds, but Wi-Fi
6E promises more than a gigabit per device. This will become especially
relevant when you’re hooking your phone up to multi-gigabit home internet
service, when and if that appears in the next few years. It also helps with
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connections can already go over 2Gbps.
The Ultra also supports UWB, a new wireless technology that I haven’t found a
use for yet. UWB adds a directional element to short-range wireless, so you can
eventually get, say, a virtual car key app that opens your car door when you’re
pointing at the car, or a Smart Tag that tells you not only whether you’re near it
but which direction it’s in. For now, its only use is for a “nearby share” function
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Bluetooth or Wi-Fi.