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How to install Ubigi eSIM on Samsung Galaxy S21 5G / S21+ 5G / S21 Ultra 5G?

Before activating your eSIM on your Samsung Galaxy S21, ensure you are connected to Internet either using your mobile data or Wi-Fi network.

To install your Ubigi eSIM profile on your Samsung Galaxy S21 5G / S21+ 5G / S21 Ultra 5G, you can follow our step-by-step activation guide here.

Explore Ubigi eSIM data plans for seamless connectivity worldwide!

Install once, stay globally connected for life with a single eSIM, compatible with all eSIM-enabled devices : iOS Phone, iPad OS, Android, and Windows 10 and 11.

Are you a company with teams on the move?

Manage your employees' LTE/5G connectivity on smartphones, tablets, laptops, and hotspots
while maintaining complete control over your costs.​

Looking for something specific?

Other frequently asked questions:

How to install Ubigi eSIM onFind X9 / X9 Pro?

How to install Ubigi eSIM on Oppo Reno13 Pro?

How to install Ubigi eSIM on Xiaomi 15T Pro?

How to install Ubigi eSIM on Samsung Galaxy Z Flip 7 / Z Flip 7 FE?

Installing an eSIM on iPhone 17, iPhone 17 Pro, iPhone17 Pro Max and iPhone Air

Service Update for Travelers in Turkey

UAE Service Update For UAE Residents

How to install Ubigi eSIM on the Xiaomi 15, 15 Pro and 15 Ultra?

How to install Ubigi eSIM on Sony Xperia 1 VI and Xperia 10 VI?

How to install Ubigi eSIM on the Vivo X200 and X200 Pro?

How to install an eSIM profile on Google Pixel 9?

How to install Ubigi eSIM on Samsung Galaxy S25 / S25+ / S25 Edge / S25 Ultra?

How to install Ubigi eSIM on Oppo Find X8/ X8 Pro ?

How can I buy a Ubigi data plan on iPad?

Where to attend a traditional wine and Champagne tasting in Paris?

Are there special events or festivals in Paris?

How to stay in touch with family and friends when visiting Paris?

Will my phone work abroad, or do I need international roaming?

What are the best options for mobile Internet in Paris?

What is the best way to get around Paris?

What are the best day trips I can take from Paris?

What are the best museums to visit besides the Louvre? 

What are the must-see attractions in Paris?

Should I enable the "Data switching" option on my iPhone when using Ubigi?

How to get and use Ubigi?

Can I add additional eSIM profiles to use it/them along with Ubigi eSIM?

Can I install several Ubigi eSIM profiles on the same device?

How to join the Ubigi referral program?

How to transfer my eSIM profile from an Android device to an iPhone?

How to transfer my eSIM profile from an iPhone to an Android device?

How to use a promo code with Ubigi ?

How to use the Ubigi WELCOME10 welcome promo code?

Why isn’t my Student Beans promo code working on the Ubigi website?

Can I redeem my Student Beans discount directly on the Ubigi site?

What is the Ubigi App?

Can I use the coupon code both on the Ubigi website and in the app?

What is Ubigi eSIM?

What is a Ubigi account?

Is 5G available on Ubigi ?

How to get 5G with Ubigi? - Apple & Android

Will I receive a QR code each time I recharge my Ubigi account with an eSIM data plan?

How much does a Ubigi eSIM cost?

When does the validity of my Ubigi data plan start?

How to disable 5G connectivity ? - Apple & Android

How to install Ubigi eSIM on Samsung Galaxy S22 series (including S22, S22+ and S22 Ultra)?

How to install Ubigi eSIM on your iPhone 14 models?

How to install Ubigi eSIM on your iPhone 12 models?

How to install Ubigi eSIM on your iPhone 13 models?

The website Ubigi.me does not display on my iPhone even though my internet connection is working. Why and what to do?

The website Ubigi.me does not display on my iPad even though my internet connection is working. Why and what to do?

How to install an eSIM profile on Google Pixel 6 or Google Pixel 7?

How to install an eSIM profile on Google Pixel Fold?

How to install Ubigi eSIM on my Android device with a QR Code?

How to temporary deactivate your Ubigi eSIM?

How to switch on or switch off an eSIM profile on iOS iPhone

How to reactivate or deactivate an eSIM profile on iPhone?

How to switch on or switch off an eSIM profile on Android devices

I have a new iPhone/iPad. How to transfer my current Ubigi eSIM profile to it to keep my Ubigi account?

How to install my current Ubigi eSIM profile in a new/another Android device to keep my Ubigi account?

How to reinstall the Ubigi eSIM profile I deleted on my iPhone/iPad?

I get an error message when I use the QR code on my Ubigi account to re-install my Ubigi eSIM profile, why?

How to reinstall the Ubigi eSIM profile I deleted on my Android device?

How to manually install an eSIM profile using an activation code on Android?

Where can I find my Ubigi purchase history?

Can I tether my Ubigi connection to share data with other devices?

How to install Ubigi eSIM on the Xiaomi 12T Pro?

How to install Ubigi eSIM on Fairphone 4 ?

Which currency is applied for my Ubigi purchases?

How to install Ubigi eSIM on Sony Xperia 1 IV, Xperia 5 IV and Xperia 10 IV?

How to install Ubigi eSIM on your iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max?

How to install Ubigi eSIM on your Android phones or tablets?

How to install Ubigi eSIM on Samsung Galaxy S20 / S20+ / S20 Ultra?

How to install Ubigi eSIM on Samsung Galaxy S23 / S23+ / S23 Ultra?

How to install Ubigi eSIM on Samsung Galaxy Fold and Z Fold models ( Z Fold 2/ Z Fold 3/ Z Fold 4) ?

How to install Ubigi eSIM on Samsung Galaxy Z Flip / Z Flip 3/ Z Flip 3 5G Fold / Z Flip 4?

How to install an eSIM on Huawei P40 and P40 Pro?

How to install an eSIM on Huawei Mate 40 Pro?

How to install Ubigi eSIM on Google Pixel 7a ?

How to install Ubigi eSIM on your Google Pixel 4 phone?

How to install Ubigi eSIM on Oppo Find N2 Flip?

How to install Ubigi eSIM on Oppo Find X5/ X5 Pro ?

How to install Ubigi eSIM on your Surface Go 2 ?

How to install Ubigi eSIM on the Motorola Razr?

How to install Ubigi eSIM on your Surface Pro 9?

How to install Ubigi eSIM on your Surface Pro X?

How to install Ubigi eSIM on your laptop?

How do I setup eSIM on Google Pixel phones?

What will be my Ubigi mobile phone number?

How to install Ubigi eSIM on your ThinkPad X12 Detachable (12", Intel) Tablet?

How to install Ubigi eSIM on your Surface Pro 7+?

How to install Ubigi eSIM on your ThinkPad X1 Nano (13”, Intel) Laptop?

How to install Ubigi eSIM on your ThinkPad X1 Fold (13”) PC?

How to install Ubigi eSIM on your Surface Duo?

How to install Ubigi eSIM on your ThinkPad X1 Carbon Gen 9 (14", Intel) Laptop?

How do you use Ubigi?

How to install Ubigi eSIM on your ThinkPad X1 Titanium Yoga (13.5”, Intel) 2 in 1 Laptop?

How to get a free Ubigi eSIM for your laptop?

How to get a free Ubigi eSIM for your iPhone or iPad?

How to manually set-up Ubigi's APN for iPhone and iPad?

Which countries are covered by Ubigi?

How to manually set-up Ubigi's APN for Windows 10 or Windows 11?

What APN (Access Point Name) is used for Ubigi?

Does Ubigi eSIM cover Asia?

What is the APN Settings for Ubigi for Android?

Does Ubigi eSIM cover Europe?

Does Ubigi eSIM cover the USA?

Which local operators does Ubigi use around the world?

Does the Ubigi eSIM work in Russia?

Does the Ubigi eSIM work in Caribbean?

Does the Ubigi eSIM work in UK (United Kingdom)?

Does the Ubigi eSIM work in Italy?

Does the Ubigi eSIM work in Germany?

Does the Ubigi eSIM work in Spain?

Does the Ubigi eSIM work in Switzerland?

Can you make phone calls with Ubigi?

Does the Ubigi eSIM work in Japan?

Does the Ubigi eSIM work in France?

Does the Ubigi eSIM work in USA?

What eSIM data plan can I use for Caribbean?

What eSIM data plan can I use for Germany?

What eSIM data plan can I use for Russia?

What eSIM data plan can I use for USA?

What eSIM data plan can I use for Spain?

What eSIM data plan can I use for UK (United Kingdom)?

What eSIM data plan can I use for Switzerland?

What eSIM data plan can I use for Italy?

How to manually install an eSIM profile using an activation code on iOs?

Why did I not receive my verification code by email?

Should you buy your Ubigi eSIM data plan before traveling, or when you arrive?

What are the available payment methods to buy Ubigi eSIM data plans?

How to get a free Ubigi eSIM for your Android phone?

How to create your Ubigi eSIM account?

What eSIM data plan can I use for Japan?

How to buy a Ubigi eSIM data plan?

Can I share my Ubigi connection to other devices?

Where can I buy a physical Ubigi SIM Card?

UBIGI vs AIRALO?

How to install Ubigi eSIM on your iPhone or iPad?

How to install Ubigi eSIM on your iPhone?

What eSIM data plan can I use for France?

How to get Internet access at marinas, yacht clubs, and moorings?

How to install Ubigi eSIM on my iPhone with a QR Code?

How to install Ubigi eSIM on your iPad equipped with an eSIM?

How to install Ubigi eSIM on your iPhone XR?

How to install Ubigi eSIM on your iPhone XS?

How to install Ubigi eSIM on your iPhone SE?

How do I stay connected on my Nile cruise in Egypt?

Explore Ubigi eSIM data plans for seamless connectivity worldwide!

Install once, stay globally connected for life with a single eSIM, compatible with all eSIM-enabled devices : iOS Phone, iPad OS, Android, and Windows 10 and 11.​

Are you a company with teams on the move?

Manage your employees' LTE/5G connectivity on smartphones, tablets, laptops, and hotspots
while maintaining complete control over your costs.

Great Trustpilot stars Trustpilot
Trustpilot stars
Based on 30937 reviews on Trustpilot
5 stars Verified
Verified review
This user has been identified as a buyer
Works all over Japan
Works all over Japan. Easy to connect. Excellent app. Great website. Would use again
DeeJay, 31 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
✅👌🏻very good
✅👌🏻very good
çiğdem, 31 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Easy - Seamless - and 5G!
The eSIM was easy to install and worked well in Finland, Sweden, Estonia, and Denmark. I especially appreciated having 5G data most of the time!
Warren Kaiser, 31 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Perfect world internet services
Perfect world internet services, I love it
Yaser Ibrahim, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Ubigi in Kenya
In Kenya works good with Safaricom
Marco V., 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Good value and it works
A reasonable bundle at a reasonable price. Others we've tried expire too quickly. Works through the Caribbean.
Steve Mills, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Because I have great interned.
Because I have great interned.
customer, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
easy to download
easy to download competitive price
curtis enns, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Very reliable and fast
Very reliable and fast
customer, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Excellent value for money
Easy to buy, easy to install, easy to get started, great performance, and excellent value for money.
Yannick, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Super user friendly
Super user friendly
Fani, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Seamless
Seamless. Worked as advertised. Didn’t have to think about it once
customer, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Good connection.
I’ve had good connection every place I went in Japan, even on the train
TERESE, 30 Jan 2026
5 stars Verified
Verified review
This user has been identified as a buyer
Fast and safe internet
Fast and safe internet. No regrets. Thank you for being properly!!
ERDI AKCA, 30 Jan 2026
4 stars Verified
Verified review
This user has been identified as a buyer
Had trouble getting going in Japan
Had trouble getting going in Japan. Once set up worked a treat.
customer, 30 Jan 2026
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How to check eSIM compatibility

Smartphones / Tablets:

Dial *#06#.
→ If an EID number appears, your device is eSIM-compatible.

Windows 10 / 11:

Press Windows+I.
Go to “Network & Internet”
→ If you see "Cellular", your PC is eSIM-compatible.

How to check carrier unlocking

iPhone / iPad:

Go to Settings > General > About.
Scroll to Carrier Lock.
→ If you see “No SIM restrictions”, your device is unlocked.

Android:

Go to Settings > Network & Internet > Mobile network.
Disable Automatic network selection.
→ If multiple networks appear, your device is unlocked.

You already have an eSIM in your cart.

Each order can only include one eSIM data plan.

If you choose to add a new one, the current plan will be removed. What would you like to do?