I have not used T-Mobile specifically but I did try out a 5g home internet product and one thing to look out for is that trees can interfere with your signal, so make sure there’s not trees between where you’ll put your access point and the towers. If you’re in the northern hemisphere and the leaves have fallen also keep in mind that the signal could be affected more when the leaves come back.

If it is not a direct fiber connection the I would not use it unless it’s the last resort.

If by streaming, you mean that you will be streaming content, then it will likely be terrible as the dropped packets will cause stutters in your video.

I imagine a secular connection will drop significantly more packets due to environmental interference that fiber and Ethernet is not really subject to.

Gaming and streaming? No idea. I’ve been on a 5G hotspot for two years at this point, and it acquits itself well enough. Generally 150-450mbps. At no point have I thought “this cheaper thing simply isn’t serving my needs.”

But I can’t hit the broadside of a barn in a shooting game. Seriously, while still on a landline, my college roommate bought me Red Dead Redemption 2, and the first task was to shoot the broadside of a barn, which I could not do.

Thankfully, he views that story as being recompense for his financial outlay. I mean, I’d never played a shooting game.

Any wireless technology will be problematic for applications sensitive to jitter. Such as VoIP and gaming. It’s fine for a summer vacation to the cottage but a terrible replacement for a regular connection.

Streaming services like Netflix and YouTube will be fine as long as it has suitable bandwidth to buffer.

That said, I’ve had friends, and clients try to make this happen with mixed results. I wouldn’t recommend it.