How to set up eSIM on your smartwatch

By Nathan Lawrence

Last updated 25 September 2025

Contents

In this guide:

Which mobile providers offer smartwatch eSIM plans in Singapore?
How to set up eSIM for Apple Watch
How to set up eSIM for Galaxy Watch
How to set up eSIM for Pixel Watch
Smartwatch eSIM FAQ

If you like using a smartwatch, they typically come in two options: Wi-Fi-only or Wi-Fi and cellular (LTE). With a cellular-enabled smartwatch, you can potentially have mobile connectivity on your smartwatch even when that watch isn't near your mobile phone. To get connected, though, you'll need to have a cellular-capable smartwatch, be with a mobile provider that supports smartwatch eSIM, and then link your smartwatch with your mobile plan.

In terms of smartwatch options, Apple Watch is the most popular for eSIM in Singapore, but you can also use a Samsung Watch, Pixel Watch, or potentially any other eSIM-capable smartwatch. Our eSIM smartwatch guide breaks down compatible mobile providers and popular smartwatches, with setup guides for Apple Watch, Samsung Watch, and Pixel Watch.

Which mobile providers offer smartwatch eSIM plans in Singapore?

You'll need to have a mobile plan with either M1, Singtel, or StarHub to make use of cellular functionality on a smartwatch (via eSIM). Whichever of the big three you go with, the smartwatch add-on is called NumberShare in Singapore, which allows you to share your mobile number to call, text, and use data without a connection to your phone. Note that M1 NumberShare, Singtel NumberShare, and StarHub NumberShare aren't available for prepaid customers; you need a postpaid SIM plan.

If you're a new subscriber with M1, select plans include six months of NumberShare, which is normally $7.03 per month. While there's no minimum subscription period, M1 does charge a one-off $38.15 fee.

At the time of writing, Singtel was offering its customers three months of NumberShare for free. Unlike M1, Singtel's NumberShare requires a 12-month subscription, charged at $7.03 per month for a limited time. Singtel also charges a one-time $10.90 eSIM smartwatch activation fee.

NumberShare is an add-on for StarHub postpaid customers. It has a $12.11 one-time charge and normally costs $8.15 per month. At the time of writing, though, StarHub was offering three months of free NumberShare.

If you're interested in NumberShare for your smartwatch, consider one of the M1, Singtel, or StarHub plans below.

#1	M1	M1 5G SIM Only 150GB 150GB data M1 5G network 1000 Minutes 1000 Messages Deal: $3 off first 3 months for new sign-ups and port-ins only $14.95 Min. cost $11.95 Go	$14.95 Min. cost $11.95	Go
#2	M1 Editor's Pick	M1 Editor's Pick 5G SIM Only 300GB 1024GB data M1 5G network 1000 Minutes 1000 Messages Deal: Bonus 724GB is for local data usage + $3 off first 3 months for new sign-ups and port-ins only $17.95 Min. cost $14.95 Go	$17.95 Min. cost $14.95	Go
#3	StarHub	StarHub Medium 5G SIM Only 150GB data StarHub 5G network 1000 Minutes 500 Messages Deal: Exclusive for new sign-ups: Free 12-month subscription to SmartSupport Lite + Free 12-month ScamSafe $22 Min. cost $22 Go	$22 Min. cost $22	Go
#4	M1	M1 5G SIM Only 350GB 1024GB data M1 5G network 1000 Minutes 1000 Messages Deal: Bonus 674GB is for local data usage + $5 off first 3 months for new sign-ups and port-ins only $22.95 Min. cost $17.95 Go	$22.95 Min. cost $17.95	Go
#5	StarHub	StarHub Large 5G SIM Only 200GB data StarHub 5G network 1500 Minutes 750 Messages Deal: Exclusive for new sign-ups: Free 12-month subscription to SmartSupport Lite + Free 12-month ScamSafe $32 Min. cost $32 Go	$32 Min. cost $32	Go
#6	Singtel	Singtel Enhanced Core SIM Only 5G+ 300GB data Singtel 5G network 700 Minutes 700 Messages Deal: Get up to $800 one-time cashback when you add a phone with PayLater $40 + $32.70 Upfront Min. cost $72.70 Go	$40 + $32.70 Upfront Min. cost $72.70	Go
#7	Singtel	Singtel Priority Plus SIM Only 5G+ 600GB data Singtel 5G network 1000 Minutes 1000 Messages Deal: Get up to $800 one-time cashback when you add a phone with PayLater $55 + $32.70 Upfront Min. cost $87.70 Go	$55 + $32.70 Upfront Min. cost $87.70	Go
#8	Singtel	Singtel Priority Ultra SIM Only 5G+ Unlimited data Singtel 5G network 1500 Minutes 1500 Messages Deal: Get up to $800 one-time cashback when you add a phone with PayLater $80 + $32.70 Upfront Min. cost $112.70 Go	$80 + $32.70 Upfront Min. cost $112.70	Go

How to set up eSIM for Apple Watch

If you have an eSIM-compatible Apple Watch from third-gen or later, your smartwatch is likely compatible with NumberShare. Here's a list of Apple Watch eSIM devices supported in Singapore:

Apple Watch Series 11
Apple Watch Series 10
Apple Watch Series 9
Apple Watch Series 8
Apple Watch Series 7
Apple Watch Series 6
Apple Watch Series 5
Apple Watch Series 4
Apple Watch Series 3
Apple Watch Ultra 3
Apple Watch Ultra 2
Apple Watch Ultra
Apple Watch SE
Apple Watch SE 2
Apple Watch SE 3

Before you configure your Apple Watch eSIM, ensure you have the latest software on your iPhone and Apple Watch. Also check that the Apple Watch app is installed on your iPhone. After updating, follow these steps:

Open the 'Apple Watch' app on your iPhone
Tap on the 'My Watch' tab, then tap on 'Cellular'
Tap 'Set up Cellular'
Follow the eSIM setup instructions from your mobile provider

How to set up eSIM for Galaxy Watch

Every Samsung Galaxy Watch after the original Watch Active has a model that supports smartwatch eSIM. Here's the full list of compatible Samsung Galaxy Watch devices:

Galaxy Watch 8
Galaxy Watch 7
Galaxy Watch 6
Galaxy Watch 5
Galaxy Watch 4
Galaxy Watch Active 2

The first time you connect your cellular-capable Galaxy Watch to your phone, your provider should prompt you to activate the smartwatch eSIM. Make sure you have the Galaxy Wearable app installed on your phone and ensure your phone has an eSIM installed (or a SIM card inserted). After completing the provider setup, finish the activation process by following these Galaxy Watch steps:

Go to the 'Galaxy Wearable' app on your phone, then tap on 'Watch settings'
Tap on 'Mobile plans' and wait for the app to scan for an eligible LTE network
Follow the remaining prompts to finish Galaxy Watch eSIM activation

How to set up eSIM for Pixel Watch

Only Singtel offers cellular support for Pixel Watch users in Singapore, and even then only for the Pixel Watch 3 and Pixel Watch 4. Technically, the first-gen and second-gen Pixel Watches also offer cellular connectivity.

Before you configure the eSIM on a Pixel Watch, check that the Google Pixel Watch app is installed on your Android phone (iPhones aren't supported). Afterwards, follow these Pixel Watch eSIM configuration steps:

Open the 'Google Pixel Watch' app on your Pixel Watch, then tap on 'Settings'
Tap on 'Connectivity', then on 'Mobile'
Ensure the status on the next screen is toggled 'On'
Now open the 'Google Pixel Watch' app on your Android phone
Tap on 'Mobile network', then tap on 'Set up a new profile'
Choose 'Set up a new profile via your cellular carrier'
Follow the remaining on-screen instructions to complete setup with your mobile provider

Smartwatch eSIM FAQ

Does my phone also need to be eSIM compatible to pair with my smartwatch?

No, your mobile phone can use either a physical SIM card or an eSIM to share your mobile plan with an eSIM-capable smartwatch. The main thing is to ensure your phone is connected to an M1, Singtel, or StarHub postpaid plan before setup.

What are the advantages of eSIM in smartwatches?

Using a smartwatch with an eSIM means you can have mobile data without having to connect the smartwatch to a phone via Bluetooth (or be reliant on Wi-Fi). Practically speaking, even if you leave your phone at home, you'll still be able to make and receive calls, send or receive texts, and use data-reliant apps on your smartwatch if it has an eSIM using NumberShare.

How do I change or transfer an eSIM on my smartwatch?

If you need to change smartwatch, you'll need to terminate your existing NumberShare plan with your mobile provider, then resubscribe with your new smartwatch. If you change phones, no change or transfer should be required as long as you have the same number and are with the same NumberShare-offering mobile provider.

Do Giga and Gomo support eSIM for Apple Watch?

No, Giga doesn't support eSIM for Apple Watch and nor does Gomo offer Apple Watch eSIM. Go with Singtel for an Apple Watch eSIM (via NumberShare). Alternatively, StarHub and M1 also offer NumberShare.