Apple Watch Ultra Disconnecting from Cellular Data and only connects again if watch is restarted

I finally got mine to work but took about a dozen times calling. TMobile and 18 pairings. I even connected a second eSim from another provider and it worked fine so I can prove to TMobile it’s not the watch or iPhone. The final thing they did was completely remove my account and reset it up again. As of a week now it works great.

No they didn’t and have just found a thread on the 02 forums stating the same , resetting the esim doesn’t fix, the whole Watch account / tariff has to be cancelled and then re-instated , so have just requested , thank for input @weatherspotter

So I have since discovered that the problem I was having is because part of the T-Mobile network isn't supporting the Apple Watch Cellular and in particular the one that serves my neighborhood is one of those towers. I've reported it to T-Mobile, but there is no resolution at this time.

what made it start working is I had to turn off my phone and then restarted my watch. Then I turned off the wifi on the ultra. Then I saw the Cellular sign change to LTE and then the watch worked with cellular. I think it has a hard to time from being linked with the phone and then when Im away from the phone it takes a while for it to switch to its own LTE. Still wish it would function smoother.

I have the same issue. I am on T-Mobile and have been in contact with their tech support several times. They have reprovisioned the phone and assigned new ESIM several times. Unpaired and re-paired the watch. Each time they reprovisioned the phone it would work fine for voice and data, but once I reconnected to Bluetooth and home wifi...any subsequent attempt to go back on cellular only (Bluetooth off on phone and wifi off on Ultra, or just leaving iPhone at home), I can make and receive calls but no data will be received. Under Settings>Cellular on the Apple Watch Ultra, it will say No Connection, even though the icons show connected and four bars of signal strength. I have a support ticket open at T-Mobile, but no resolution yet. I will contact Apple support too, but if anyone discovers a resolution, it would be great to post here.

Figured out this issue with Apple technical support 2 nights ago. Hopefully this will help someone out there.

If you have a VPN on your iPhone, it causes issues with the ability to handoff calls to your watch. Inevitably causing the watch to produce “called failed” error message.

I am using ExpressVPN specifically. I don’t know if other ones also will cause

Apple Watch Ultra to fail.

Good luck everyone.

Hi, even after upgrading the phone software, issue is still persisting. Every time you leave home without phone, you need to do the manual setting on Watch that also disappears within minutes. This is annoying and spoils the pleasure of Watch experience. Over, not satisfied with the product.

Hi,

I am from United Arab Emirates and facing the same issue with my Apple watch ultra from day one, evn after getting the latest update, issue not resolved.my wife using apple watch series 7, its working perfect with cellular, only issue with apple watch ultra, this is serious bug and aplle must be look on this.

This happened with my ultra when I first got it. I had AT&T reset my watch twice and it would work for a night and go right back to no cellular in the morning.

I took it to an Apple Store and they sent me a brand new watch. This watch is doing the same thing!

This watch cost a lot of money to not connect to cellular reliably.

Is this something that can be patched? I’m literally at my wits end and am thinking about returning the watch. I think I may create a video about this issue to post on YouTube.

I have the same issue. I have the Ultra now and T-mobile.

But I had series 7 before and there was no problem. So the issue will be probably in Ultra.

I’m having this same thing with T-Mobile on my Apple Watch series 8 so probably not hardware and either T-Mobile side or apple

That's the same things but did they completely remove your watch account and plan? If not they have to treat you as a new account. Does that make sense?

I am in Australia, new Ultra (3 days) similar issue - at my desk with gr8 cellular coverage (Optus) AND calls from Ultra just disconnect AND calls from iPhone drop out when Ultra is on and nearby (on my wrist, on my desk) - airpods in use also .... this does not seem to happen when I am out walking for example. I bought Ultra as a business productivity aid (as well as other features) - it has had the opposite effect and most people I talk to are senior managers and C-Suite - it's not a good look

Same problem we are also facing in India. If we switch off the phone, even after repeated steps of connecting with Watch network it comes as ‘mobile switch off’

i don’t know why Apple is not taking action for this premium product