Theoretically some do, but it really depends on where in the country you're located and your carrier. For instance, based on this list of owned spectrum and this calculator, AT&T is possibly able to do 979mbps downloads (aggregating 1 B4, 1 B66, 1 B12 and 1 B2 carrier) with 4x4 MIMO and 256QAM if they get rid of 3G/UMTS. This isn't taking into account the possible usage of LTE-U (unlicensed 5GHz spectrum, i.e. the same as used for Wi-Fi), either.

Also, even if spectrum constrained, a single 20MHz carrier gives you a maximum theoretical downlink speed of 391.6mbps. While all the speeds mentioned are unlikely to be met in real life, I imagine with enough cell density, one could get to a significant fraction of theoretical a large amount of the time. That said, most people's experiences on US carriers involve double-digit download speeds (which are still reasonable for the vast majority of mobile phone use, mind you, just not so much the other potential uses that 5G supposedly enables).

In any case, more spectrum does make reaching those speeds more consistently with fewer towers a lot easier. Which, since T-Mobile recently got a whole bunch of it, should put them in a pretty good position for 5G.

Right, but what channel widths is Tmo deploying? I don't think it's anywhere near what you'd need for services materially faster than current LTE.

Apparently they're getting 700mbps+ peak speeds (and consistently 100mbps+) with just 40MHz of 2.5GHz spectrum. IIRC, they have something like 100MHz+ per metro area available on average thanks to Sprint.

If that is the case then 5G is suddenly much more attractive (especially for road warriors). On Reddit in r/TMobile, I most often see ~140mbps speed tests, with the occasional ~300mbps. No clue though if this is inside or outside. Honestly for me, on my MOBILE, I want lower latency, but have no need for over 100mbps. However, when I want to tether my laptop, then I'd LOVE gigabit+ speeds.

Interesting. I wonder if they will deploy adequate backhaul to make these speeds a reality for the majority of users the majority of the time.

I did a speed test about an hour ago and got ~23mbps down and ~4.7mbps up on LTE (B2/66/12 aggregated). Ping seemed okay (22ms) but the jitter (13ms) was quite high. 5G should help with the latter for sure, but not sure by how much.

Curious if anyone can talk me into / out of the iPhone 12.

Several responses to the question you are asking in the "New iPhone [12] is here" thread in this sub forum.

https://www.t-mobile.com/isp No limits.

I went from ~50 max [usually in the 25-35 range] to 100-165 on AT&T.

The only thing I am unsure of, and have yet to get a straight answer to, is if this is real 5G or just AT&T's 5Ge, which is just enhanced LTE.

For the time being though, a reliable 100mbit/s+ works for me.

But aren't all "unlimited" plans throttled after like 22 GB?

Also the hotspot use it limited to slower speeds or higher speeds with some low cap.

But that language is in most ISP Terms of Service these days. They can all throttle at will.

The unlimited plans use the word may throttle after XX GB. It is not a hard cap which throttles after XX GB. My AT&T plan states may throttle after 100 GB. The hotspot is limit is 15 GB.

As soon as I receive my iPhone 12, I will be able to test the actual 5G speeds not the 5Ge since AT&T has deployed 5G towers along the bike trail near my house.

If you're getting reliable 100 Mbps then does it matter if it's 5G or 4G?

Another reason I stuck with AT&T, data used to stream an AT&T service [in my case AT&T TV Now and HBO Max] doesn't count against your hotspot limits nor do they trigger throttling.

So they say anyway.

AT&T does however max you out at 1080p and a pretty low bitrate, so no streaming in 4K HDR.