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

Home Hub Command Center with Dome Base Feature

Apple Working on All-New Operating System

Thursday September 25, 2025 1:11 pm PDT by
Apple is developing an all-new operating system codenamed "Charismatic," according to Bloomberg's Mark Gurman. Apple smart home hub concept based on rumors This is likely Apple's long-rumored "homeOS" operating system. In a report last month, Gurman said both Apple's rumored smart home hub in 2026 and tabletop robot in 2027 will run the new operating system. He said the software platform ...
Tim Cook Rainbow

Apple Event in October? Here's What to Expect

Monday September 29, 2025 9:31 am PDT by
Apple's annual iPhone event is in the rearview mirror, but rumors suggest the company plans to release a handful of additional products before the year ends. Will there be another Apple event this October? We discuss the possibility below. Apple in October Apple's most recent October events were in 2021 and 2023. In 2022 and 2024, Apple did not host an October event. Instead, it...
iOS 26

Apple Continues to Prepare iOS 26.0.1 With Multiple Bug Fixes Expected

Sunday September 28, 2025 1:30 pm PDT by
Apple is preparing to release iOS 26.0.1, according to a private account on X with a proven track record of sharing information about future iOS versions. The account initially said iOS 26.0.1 would have a build number of 23A350, but they now expect the update to have a build number of 23A355. This suggests that the software update will include more bug fixes or changes than initially...
Apple MacBook Pro M4 hero

New MacBook Pro Nears Mass Production, But Four Bigger Upgrades Expected Next Year

Sunday September 28, 2025 2:08 pm PDT by
Apple's next MacBook Pro models will enter mass production soon, according to the latest information shared by Bloomberg's Mark Gurman. In his Power On newsletter today, Gurman said he continues to believe the new MacBook Pro models will be released at some point between late 2025 and the first quarter of 2026, meaning they should be available to order by March at the latest. Apple often...
iOS 26

Apple Releases iOS 26.0.1 With Fixes for Wi-Fi, Cellular, and Camera Issues on iPhone 17 Models

Monday September 29, 2025 10:12 am PDT by
Apple today released iOS 26.0.1 and iPadOS 26.0.1, the first updates to the iOS 26 and iPadOS 26 operating systems that came out earlier this week. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. According to Apple's release notes for the update, iOS 26.0.1 addresses a bug that could cause aberrations in...
iOS 26 Battery Glass Feature

iPhone 16 Pro Max 80% Charge Limit: One Year Later, Was It Worth It?

Wednesday September 24, 2025 3:58 pm PDT by
With the iPhone 15 series, I did an experiment and kept my iPhone's Charge Limit set at 80 percent for an entire year. It provided an interesting look at the impact of charge limits on battery longevity, so I decided to repeat it for the iPhone 16 line. Since September 2024, my iPhone 16 Pro Max has been limited to an 80 percent charge, with no cheating. As of today, my battery's maximum...
iphone 17 ceramic shield

Regular iPhone 17's USB-C Charging Speeds Tested With Apple Chargers

Friday September 26, 2025 9:01 am PDT by
The website ChargerLAB has tested the standard iPhone 17 model's USB-C charging speeds with a variety of Apple's chargers, from 18W to 140W. The device reached a peak charging speed of around 27W to 28W with these Apple chargers:29W USB-C Power Adapter 30W USB-C Power Adapter 35W Dual USB-C Port Power Adapter 35W Dual USB-C Port Compact Power Adapter 40W Dynamic Power Adapter with 60W Max...
LG UltraFine 6K Display TB5

LG UltraFine 6K (32U990A) TB5 Display: Pre-Orders Open September 30

Monday September 29, 2025 6:21 am PDT by
Pre-orders for LG's new UltraFine evo 6K display (model 32U990A) with Thunderbolt 5 support will begin on September 30, according to a major U.S. retailer listing. LG first revealed the 32-inch display at CES 2025 in January, teasing its status as the first monitor to support Thunderbolt 5. At the time, LG only provided high-level specs, but left pricing, availability, and full technical...
Foldable iPhone 2023 Feature Iridescent 1

Samsung Confirms Plan to Make Foldable Displays for Major American Company

Monday September 29, 2025 6:54 am PDT by
Samsung Display president Lee Cheong has confirmed plans to make foldable smartphone displays for a major American company, which is widely believed to be Apple. As reported in Chosun Biz, Cheong last week told journalists in Seoul that the company is accelerating preparations for mass production of OLED displays designed for foldable smartphones to be supplied to a "North American client."...
maxresdefault

Review: A Week With the iPhone 17 Pro

Friday September 26, 2025 12:51 pm PDT by
Apple's iPhone 17 models have been out for a week now, so we thought we'd do a longer-term review of the flagship iPhone 17 Pro and Pro Max now that we've been able to spend more time with them. Subscribe to the MacRumors YouTube channel for more videos. MacRumors videographer Dan Barbera has a Silver iPhone 17 Pro and a Cosmic Orange iPhone 17 Pro Max, and despite a lot of concern over...

Top Rated Comments

macsplusmacs Avatar
105 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
105 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
105 months ago
Maybe the systems are choking on the monthly cost.
Score: 15 Votes (Like | Disagree)
walnuts Avatar
105 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
105 months ago
On the other hand, the non-LTE Apple Watch 3 is awesome!
Score: 7 Votes (Like | Disagree)
zacheryjensen Avatar
105 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)