Just got a new smartwatch and want it online without your phone? Here’s how to activate an eSIM on a smartwatch, step by step, whether it’s an Apple Watch, Samsung Galaxy Watch, or Google Pixel Watch. New to eSIM? Start with what an eSIM card is.
Apple Watch setup
Compatible models: Apple Watch Series 3 (cellular) through Series 10, Ultra, and Ultra 2.
For everything else about setup, cellular and day-to-day use, start with our Apple Watch user guide.
Open the Watch app
On your paired iPhone, open the Watch app.
Go to Cellular
If it’s a new watch, follow the pairing prompts. If it’s already paired, tap My Watch > Cellular.
Set up cellular
Tap Set Up Cellular. Your carrier’s activation page loads.
Add the plan
Follow the on-screen steps to add a cellular plan. Most carriers handle the eSIM automatically here.
Confirm it’s live
Once it activates, your watch shows the cellular dots at the top of the screen.
Want the longer version? See our dedicated Apple Watch eSIM setup guide.
Samsung Galaxy Watch setup
Compatible models: Galaxy Watch4, Watch5, Watch6 series, and Galaxy Watch Ultra (LTE versions only).
Open Galaxy Wearable
On your Samsung phone (or any Android phone), open the Galaxy Wearable app.
Go to Mobile Plans
Tap Watch Settings > Mobile Plans.
Add a mobile plan
Tap Add Mobile Plan and follow your carrier’s prompts.
Let the eSIM download
The eSIM profile downloads to the watch, usually in a minute or two. After that, the watch works independently from your phone.
Google Pixel Watch setup
Compatible models: Pixel Watch, Pixel Watch 2, Pixel Watch 3 (LTE versions).
Open the Pixel Watch app
On your phone, open the Google Pixel Watch app.
Tap Mobile Network
Find Mobile Network under the watch settings.
Activate the eSIM
Select your carrier and follow the eSIM activation prompts. The plan activates and the watch connects to cellular.
Setting up the eSIM on your phone too? Here’s how to activate an eSIM on any phone, and more on whether smartwatches need a SIM card.
Add a watch line on US Mobile
US Mobile Premium includes a free smartwatch plan, and you can try US Mobile’s eSIM free for 30 days first (a payment method is needed to start, but you aren’t charged during the trial).
Start your free trialFrequently Asked Questions
Can I activate my smartwatch without my phone nearby?
Having your phone nearby is strongly recommended. You’ll use the phone’s companion app to pair the watch and set up cellular service, so the process is much smoother with both devices together.
What should I do if my eSIM doesn’t download automatically?
Follow the prompts to scan the QR code on your eSIM activation card or from your carrier. That usually resolves a stuck download.
Do smartwatch eSIM plans cost extra?
Most carriers charge a small monthly fee (around $5 to $15) to add a watch line, sharing your phone number across both devices. US Mobile includes a free watch plan on Unlimited Premium.
How long does smartwatch eSIM activation take?
Usually under five minutes. The eSIM profile download takes about a minute; most of the time is the carrier’s verification step.
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