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13-09-2023 11:21 PM - edited 13-09-2023 11:22 PM
Hello 🙂
Anyone who's reading these forums likely knows what a disaster the Apple Watch Cellular Plan is with Three at times, leaving many people months without service for months when they get a new device. So I was hoping, considering many people may be upgrading on the 22nd Sep when the new devices come out, what's the proper process or the best way to do it, to achieve a good outcome?
I've heard different approaches:
It would be good to know which of the following approaches (or any others I've missed) worked for people, to successfully transfer the plan without having to spend 10+ hours with the Three Support team and many months and still be unsuccessful? Trying to make the process as smooth as possible - and hopefully this thread can help others too.
@JonathanB - Could you give your input here if possible please?
on 23-10-2025 01:56 PM
No, I didn’t remove the cellular plan from the old watch first. I was amazed how easily the setup process handled it. Almost instant.
on 23-10-2025 02:12 PM
That’s really helpful. Thank you, IanM.
on 13-10-2024 07:34 AM
Yes, I was moving the plan rom Apple Watch Ultra to Apple Watch 10. It took about 30 minutes.
on 12-10-2024 11:07 PM
Anyone got this to work on a series 10? It has been saying activating for well over an hour after advised to remove it as wouldn’t pair grrr
on 01-10-2024 03:45 PM
Found these instructions which worked! No need to contact Three.
Transfer an existing cellular plan to a new Apple Watch
You can transfer your existing cellular plan from your Apple Watch with cellular to another Apple Watch with cellular by following these steps:
next to your cellular plan.
on 23-08-2024 10:12 AM
Morning,
I have just come across these posts and it alarms me to see that this pairing issue is still a big problem, which I am experiencing myself at this moment after to visits to my local three store and many phone calls to three I am still unable to use my data plan add on from my new Apple Watch I’m losing the will to live this is a problem that no one at three seems to be able to sort out this is very frustrating.
on 21-09-2023 04:31 PM
Hi @Snook,
Sorry for the delay in answering, and thanks for starting this thread, I think it should be really helpful especially with new Apple devices on the way.
To my understanding you'd want to unpair the existing Apple Watch first using the info here: https://support.apple.com/en-gb/HT204568
Then once that's completed you should be able to pair the new watch. Your existing add on should still be intact on your Three account so that you don't need to remove this and wait till the next bill cycle.
I wouldn't recommend going straight into pairing a new device, as the IMEI of the watch is stored in the background systems, conflicts with more than one IMEI can cause errors.
And for the factory reset suggestion, this is advised by Apple but only if one of the devices, phone or watch, is lost/stolen, similar to the previous scenario the IMEI may not remove itself from our system.
Please let me know if there's still any errors when following these suggestions.
Thanks,
Jonathan
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on 21-10-2025 02:15 PM
Hi Jonathan
Three years ago, you were helpful in resolving an issue with a delay in activating cellular service on my Apple Watch Ultra. I got it to work eventually, but only after waiting nearly 3 weeks (and a new billing cycle).
I wondered if you could help me again?
I've just bought a new Apple Watch Ultra and I want to transfer the service from one to another. I've found contradictory information on these forums, so could you tell me the process to transfer the service from my old watch to my new one? After the delay and hassle last time, I'm a bit paranoid! Thank you.
on 22-10-2025 01:50 PM
Hi there @Poly_phonic,
Thanks for reaching out to us here.
Apple have some helpful steps to guide you with transferring your plan to your new Apple Watch.
You should also see some more guidance directly from your new watch when you power it on😀.
Please give that a go and let us know if you encounter any issues.
Thanks,
Michael
Mod tip! The author of a post can hit 'Accept as Solution', to highlight a reply that helped solved their query.