Some Apple Watch Series 3 Owners Facing LTE Activation Issues [Updated]

Apple Watch Series 3 models are being delivered across the United States and the rest of the world today, and as customers start attempting to activate their new LTE devices, some of them are running into serious setup issues.

On the MacRumors forums, several AT&T customers have received messages stating AT&T is not supported. Support reps seem confused about how Apple Watch activation works, with one rep telling MacRumors reader KG87 that his watch needs a new number.

applewatchseries3

I am having the same problem. I contacted AT&T and they said I need to have a new number created for the watch before it will work and I am almost certain that is not true.

I contacted AppleCare and they said that there are connectivity issues with the watch and the engineers are working very hard to get it fixed.

Basically, this is a nightmare scenario for Apple and we're left without the #1 reason we made this purchase.

Many of the affected AT&T customers have said the company seems to be having trouble activating watches not purchased directly through AT&T and have been spending quite a lot of time on the phone in an attempt to get the problem ironed out. Some customers are even being told to call back tomorrow. From MacRumors reader Greg:

I have been on the phone for quite a while today with AT&T, transferred over 10 times, only to be told that they can't activate watches today due to a system issue and to call back tomorrow. It seems to be gaining notice on reddit on the apple watch subreddit.

According to another AT&T support rep, customers who ordered an Apple Watch directly from Apple will not be getting them activated until tomorrow because they're missing key information Apple was supposed to send them.

Verizon users don't seem to be having as much trouble as AT&T users, but several have been told Verizon's systems aren't fully functional. Verizon is said to be doing maintenance to fix the problem and there's no estimate of when issues will be worked out. Many VZW customers may not be able to make phone calls due to the server issues.

T-Mobile customers also appear to be having significant issues, like MacRumors reader Jesse, who said he's spent several hours on the phone with T-Mobile trying to work out an authentication error with his social security number. "T-Mobile reps are completely unprepared for dealing with this issue today. Spent many hours on the phone with T-Mobile and Apple already. Apple claims this is T-Mobile issue," he told us.

T-Mobile customers have also been told the company is having system wide issues affecting the signal T-Mobile users are getting on the Apple Watch.

At least some of the activation issues are due to customers who have incompatible plans. AT&T customers with a grandfathered unlimited data plan, for example, are not able to use the Apple Watch Series 3, despite assurances from AT&T reps that the watch was compatible with the plan.

Across the pond, some EE subscribers in the UK are having the same activation problems, and EE reps are at a loss on how to help

I'm on EE and my Apple Watch wasn't connecting either so called EE and they did some checks and asked me to restart the watch but still no go. They can't figure it out either and said they are working on a fix from Apple as lot of EE customers are having issues. They did not have any problem with what type of contract I had with EE as I'm on a monthly 20GB for GBP21 plan.

Though some customers are having issues, others have been able to activate their LTE watches with no problems and have even said it's an easy process. For the subset of users running into issues, though, it's been a frustrating afternoon attempting to deal with Apple support and carrier representatives who are still struggling to figure out all the quirks and problems that come along with supporting a new device.

Update: Several AT&T customers with grandfathered unlimited data plans have been able get an Apple Watch Series 3 to work with their plans with the help of an AT&T representative. The Apple Watch can be set up as an independent wearable and then linked to the iPhone using NumberSync.

Related Roundup: Apple Watch 11
Buyer's Guide: Apple Watch (Buy Now)

Popular Stories

m1 chip slide

Five Years of Apple Silicon: M1 to M5 Performance Comparison

Monday November 10, 2025 1:08 pm PST by
Today marks the fifth anniversary of the Apple silicon chip that replaced Intel chips in Apple's Mac lineup. The first Apple silicon chip, the M1, was unveiled on November 10, 2020. The M1 debuted in the MacBook Air, Mac mini, and 13-inch MacBook Pro. The M1 chip was impressive when it launched, featuring the "world's fastest CPU core" and industry-leading performance per watt, and it's only ...
iOS 26

iOS 26.2 Available Next Month With These 8 New Features

Tuesday November 11, 2025 9:48 am PST by
Apple released the first iOS 26.2 beta last week. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics in Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date....
All Screen iPhone 2027 Feature 1

Apple to Hide Selfie Camera Under Display of 20th Anniversary iPhone

Monday November 10, 2025 1:55 am PST by
Apple will conceal the front-facing camera under the screen of its 2027 iPhone, a Chinese leaker said today, corroborating reports that Apple's 20th anniversary iPhone will have no visible cutouts in the display. Weibo-based account Digital Chat Station said Apple's development of under-screen camera technology was progressing as planned for adoption in 2027, one year after it will...
iphone pocket%402x

Apple Debuts iPhone Pocket, a Limited Edition iPod Sock-Style Accessory

Tuesday November 11, 2025 1:23 am PST by
Apple has teamed up with Japanese fashion house ISSEY MIYAKE to launch iPhone Pocket, a 3D-knitted limited edition accessory designed to carry an iPhone, AirPods, and other everyday items. The accessory is like a stretchy pocket, not unlike an iPod Sock, but elongated to form a strap made of a ribbed, elastic textile that fully encloses an iPhone yet allows you to glimpse the display...
iphone air thinness

iPhone Air Sales Are So Bad That Apple's Delaying the Next-Generation Version

Monday November 10, 2025 11:41 am PST by
The thin, light iPhone Air sold so poorly that Apple has decided to delay the launch of the next-generation iPhone Air that was scheduled to come out alongside the iPhone 18 Pro, reports The Information. Apple initially planned to release a new iPhone Air in fall 2026, but now that's not going to happen. Since the iPhone Air launched in September, there have been reports of poor sales...
Early Black Friday Deals 1

The Best Early Black Friday Apple Deals on AirPods, Apple Watch, iPad, and More

Saturday November 8, 2025 6:16 am PST by
We're officially in the month of Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When ...
homepod mini colors

New HomePod Mini Coming Soon With These Features

Tuesday November 11, 2025 7:30 am PST by
Apple is expected to announce a new HomePod mini imminently, headlining with new chips. Here are all of the new features we're expecting. The second-generation HomePod mini is highly likely to contain a more up-to-date chip for more advanced computational audio and improved responsiveness. The current HomePod mini is equipped with the Apple Watch Series 5's S5 chip from 2019. Apple is likely ...
Apple fitness plus feature

Future of Apple Fitness+ 'Under Review'

Sunday November 9, 2025 5:30 am PST by
The future of Apple Fitness+ is "under review" amid a reorganization of the service, according to Bloomberg's Mark Gurman. In the latest edition of his "Power On" newsletter, Gurman said that Apple Fitness+ remains one of the company's "weakest digital offerings." The service apparently suffers from high churn and little revenue. Nevertheless, Fitness+ has a small, loyal fanbase that...
iphone black friday gold

The Best Early Black Friday iPhone Deals

Monday November 10, 2025 10:18 am PST by
Cellular carriers have always offered big savings on the newest iPhone models during the holidays, and Black Friday 2025 sales have kicked off at AT&T, Verizon, T-Mobile, and more. Right now we're tracking notable offers on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air. For even more savings, keep an eye on older models during the holiday shopping season. Note: MacRumors is...
2024 iPhone Boxes Feature

Apple Adjusts Trade-In Values for iPhones, iPads, Macs, and More

Thursday November 6, 2025 11:12 am PST by
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store. The charts below provide an overview of Apple's current and previous trade-in values in the U.S., according to its website. Maximum values for most devices either decreased or saw no change, but the iPad Air received a slight bump. ...

Top Rated Comments

macsplusmacs Avatar
106 months ago
i don't think i will even try to activate mine till sunday morning i guess :/

I got my LTE series 3 today.
I am on AT&T.
I am on the grandfathered plan.
I have enough beer till then.
Score: 26 Votes (Like | Disagree)
DocMultimedia Avatar
106 months ago
Apple needs to have their own cell service. Having to deal with all these providers is a constant annoyance.
Score: 22 Votes (Like | Disagree)
bluespark Avatar
106 months ago
Maybe the systems are choking on the monthly cost.
Score: 15 Votes (Like | Disagree)
walnuts Avatar
106 months ago
These carriers charge $10 whole extra dollars per month for a device that will a) default as much as possible to the iphone or wifi and b) would likely only be used in place of the phone (resulting in little extra network usage overall) and they botch the launch too!

AND they pull stuff like this:
At least some of the activation issues are due to customers who have incompatible plans. AT&T customers with a grandfathered unlimited data plan ('https://www.reddit.com/r/apple/comments/71rstd/psa_apple_watch_lte_is_not_compatible_with_att/'), for example, are not able to use the Apple Watch Series 3, despite assurances from AT&T reps ('https://forums.macrumors.com/threads/series-3-questions-10-month-unlimited-att-plan-ok.2068049/#post-25043037') that the watch was compatible with the plan.
Really? The "plan" is incompatible? Sounds like AT&T wants even MORE than the $10 per month that is already outrageous!

Sorry- OK, rant off. My heart goes out to the people being screwed by this.
Score: 14 Votes (Like | Disagree)
danr_97070 Avatar
106 months ago
On the other hand, the non-LTE Apple Watch 3 is awesome!
Score: 7 Votes (Like | Disagree)
zacheryjensen Avatar
106 months ago
As usual macrumors runs with BS and makes a big ordeal out of something affecting a handful of users. I was able to successfully activate my 42MM SS on ATT without issue through the watch app. It was the easiest setup of any device I have ever had.

After setup, I left my phone at home, and headed to whole foods. Saw that cellular picked up immediately, and called and text my wife. Worked flawlessly, and she couldn't even tell I was talking on a watch. Used maps for directions, and asked siri a few questions. The voice was spoken aloud. I did not even have to download the siri voice like other users had mentioned. Not sure why my setup was so easy, but lets be clear about one thing.it is not doom and gloom here...this stuff works..MR needs to chill out a little and Lauren Goode should be fired.
I hope this helps you become less ignorant: https://en.wikipedia.org/wiki/Survivorship_bias
Score: 7 Votes (Like | Disagree)