Is the Samsung Galaxy Watch 4 (LTE) eSIM capable?
According to the manufacturer, the Samsung Galaxy Watch 4 (LTE) supports eSIM.
Important for smartwatches: A watch eSIM can usually only be activated with a watch plan from your mobile carrier (the number is shared with your smartphone). A travel eSIM such as BuddySIM is not guaranteed to work on the watch.
You can find step-by-step instructions from the manufacturer: Samsung guide.
Stay connected worldwide with BuddySIM, with no roaming fees and no SIM card changes.
Technical details
How to set up your eSIM
Check compatibility & buy eSIM
Make sure your Samsung Galaxy Watch 4 (LTE) supports eSIM, and buy your eSIM in the BuddySIM shop.
Install eSIM
Settings → Connections → SIM manager → Add eSIM → enter the activation details from your email or scan the QR code.
The eSIM's mobile data only activates in your destination country — before that an error message may appear. That's normal, since the data is intended for your destination only.
Enable data roaming & select line
In your destination, go to Settings → Connections → Mobile networks, turn on data roaming and select the BuddySIM eSIM as your line for mobile data — done, you are online.
On some models and operating system versions the access point (APN) is not added automatically. BuddySIM has no influence on this, it is determined solely by the device manufacturer and the operating system provider. In that case, add the APN manually: open Access points (APN) in the settings of your BuddySIM eSIM and tap Add or the plus sign (+) at the top right.
Name: BUDDYSIM
APN: data.esim (write it exactly like this: lowercase, with a dot)
Leave all other fields empty, save and select the new APN.
Download the BuddySIM app
Manage your eSIM, keep an eye on your data and top up any time — right on your Samsung Galaxy Watch 4 (LTE). Free for iOS & Android.
How much data do you need?
Estimate your usage for your trip – and find the right plan for your Samsung Galaxy Watch 4 (LTE).
All values are estimates – actual usage depends on how you use your device. How much data do I need?
Frequently asked questions
What is an eSIM?
An eSIM (embedded SIM) is a digital SIM card already built into your smartphone. You no longer need to insert a physical SIM card – everything works digitally via QR code.
Can I use my regular SIM card at the same time?
Yes! Your Samsung Galaxy Watch 4 (LTE) supports dual SIM. You can use your regular SIM card alongside the eSIM – perfect for travelling or to separate personal and business numbers.
How long does activation take?
The eSIM is activated within seconds. Right after purchase you receive the QR code by email and can scan and use it immediately.
Does BuddySIM work worldwide?
Yes, BuddySIM offers eSIM data plans for over 190 countries worldwide. Just choose your destination and stay connected anywhere.
Do I need a new number?
No! BuddySIM eSIMs are data-only plans. You keep your existing number on your physical SIM card and use the eSIM just for mobile internet.
