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Yes! I have the latest Apple TV which I connect to the internet via my iPhone 13 Pro hotspot. I have good signal strength and 25Mbs speed. If I can get connected, a film plays well. But the Apple TV often has a hard time finding my hotspot and when it does it may not accept the password. Sometimes it actually remembers the hotspot and just connects when I power up. And sometimes I just give up and hook up my iPhone to my display via the Lightning to HDMI connector. When I persevere I have tried Restart on the Apple TV, Forget this network, Airplane mode or hotspot enabled and disabled, reboot the iPhone, and even erase the Apple TV and start over. I have Maximize Compatibility for hotspot and I have looked at every setting in the AppleTV's menu. When it works, cool, when it doesn't I rue the day I embraced technology. My provider is Verizon and I have a plan that gives me tower priority and enough data and speed. Are my expectations too high or do I not understand the paradigm? I live in a rural area, can see the tower from my window. There is no wire access to my location thus the need to stream or connect to the internet via a hotspot. My software is up to date. I have scoured the 'net for answers and have not discovered what I am doing wrong. So yeah, I have this problem too.
 
Is it a 3rd gen? My 3rd gen is a piece of crap - despite being about 10 feet (and within line of sight) of the Wifi router it would drop to low resolution streaming all the time. My 1st gen worked better and I might just switch it back.
 
Hi, is anyone else having an issue with Appletv 4k and Appletv connecting to the internet to stream films etc
What is your internet source? Cellular? Cable? WiFi? Satellite like HughesNet/ViaSat? Starlink? Are you using an Ethernet connection between an internet source and the AppleTV, or wifi? Who else or what else is using your internet source? How far away is the AppleTV box from the WiFi router, if that’s what you are using?

I’m sure there are other variables that could cause problems that I haven’t thought about - I’m far from an expert in such things.

I normally don’t have any issues streaming with my AppleTV 4K, assuming that I have a good enough source of internet. I’ve had occasional issues using Fubo if my internet source is slow while other streaming services might give me poorer quality rather than interrupting service/buffering. But those are not issues with the AppleTV box - I’d have the same issues streaming with an iPad.

I’ve used cable internet with a WiFi router, Starlink, and a 5G T-Mobile hot spot device (MiFi - not hot spotting from my iPhone) all within the past year to stream to my AppleTV, with all of the routers (hot spot, Starlink and WiFi router) less than 10 feet from the AppleTV. I think many people have issues when their routers are too far away or have something that interrupts the signal from their router.

Whenever I’ve tried to hot spot from my iPhone, I’ve had a message saying that it has connected using low data mode. I’ve never figured out what setting that message is attached in order to connect using a higher data mode, so I don’t use my phone for a hot spot. I ended up buying a separate hot spot device with its own data plan, but haven’t been using it much since I bought Starlink.
 
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