Help Center & Setup Guides Unilink
Everything you need to know about eSIM setup, data plans, and troubleshooting
Popular Guides
- Read guideiOS & Android3 min read
How to Install and Configure Unilink eSIM on iOS and Android
Install in advance: We recommend adding the eSIM profile at home before your flight using a stable Wi-Fi network.
- Read guideImportant2 min read
Why 'Activating...' or 'Activation Failed' Appears Before Departure
When a customer installs an eSIM in advance while still in their home country, experiencing an "Activating..." loop or a system pop-up stating "Activation Failed" is e...
- Read guideAll brands5 min read
eSIM Supported Devices List & Compatibility Guide
To use a Unilink eSIM, your device must meet the following criteria:
- Read guideCode *#06#3 min read
How to Check if Your Phone Supports eSIM and Request a Refund
For a virtual SIM profile to function properly, your device must meet the following criteria:
All Articles
18 articles- Learn moreSetup & Activation3 min read
How to Install and Configure Unilink eSIM on iOS and Android
Install in advance: We recommend adding the eSIM profile at home before your flight using a stable Wi-Fi network.
- Learn moreSetup & Activation2 min read
Why 'Activating...' or 'Activation Failed' Appears Before Departure
When a customer installs an eSIM in advance while still in their home country, experiencing an "Activating..." loop or a system pop-up stating "Activation Failed" is e...
- Learn moreSetup & Activation3 min read
How to Activate eSIM in Russia and Lift the 24-Hour Data Block
In compliance with security regulations in the Russian Federation, roaming (data and SMS) on all foreign tourist eSIMs is temporarily restricted by local mobile carriers for 24 hours.
- Learn moreSetup & Activation2 min read
How to Safely and Properly Remove an eSIM from an iPhone
Removing an eSIM profile from your iPhone is permanent: an eSIM cannot be restored using the original QR code once deleted.
- Learn moreCompatibility5 min read
eSIM Supported Devices List & Compatibility Guide
To use a Unilink eSIM, your device must meet the following criteria:
- Learn moreCompatibility3 min read
How to Check if Your Phone Supports eSIM and Request a Refund
For a virtual SIM profile to function properly, your device must meet the following criteria:
- Learn moreData & Hotspot2 min read
Receiving Calls and SMS on Primary Number While Using eSIM
Yes, you can readily receive incoming calls and SMS on your primary number if your device supports Dual SIM Dual Standby (DSDS) technology.
- Learn moreData & Hotspot2 min read
Does Unilink eSIM Provide a Phone Number for Calls and SMS?
Unilink tourist eSIM plans are designed exclusively for high-speed mobile internet abroad.
- Learn moreData & Hotspot3 min read
Sharing Data (Personal Hotspot) with Unilink eSIM
Yes, internet sharing (Personal Hotspot / Wi-Fi tethering) is fully permitted and free of charge across all Unilink data plans in all supported countries, provided the...
- Learn morePlans & Balance4 min read
Comprehensive Guide to Unilink Plans: Standard vs Unlimited, FUP
Mobile Data Only (Data-only): Unilink eSIMs are designed exclusively for mobile internet access.
- Learn morePlans & Balance2 min read
Can I Reuse My Unilink eSIM and How Do Top-Ups Work?
You can continue using a previously installed eSIM if all of the following conditions are met:
- Learn morePlans & Balance4 min read
Monitoring Data, Saving Usage, and Topping Up Unilink eSIM
Where to check: In the Unilink app under the My eSIMs tab (tap the relevant eSIM card or the Info button).
- Learn morePlans & Balance2 min read
Promo Codes, U-Wallet Bonuses & Referral Program ('Invite & Earn')
For every friend you invite, both you and your friend receive $3 to your U-Wallet bonus balance:
- Learn moreTroubleshooting2 min read
What to Do if There Is No Internet Abroad or 3G/E Is Displayed
If internet speeds are slow, your device shows a 3G or E icon, or the connection keeps dropping while traveling, the issue is typically caused by weak signal coverage ...
- Learn moreTroubleshooting4 min read
Roaming Troubleshooting: E/3G Icons, Weak Signal & Manual Selection
If international data speeds are extremely slow, signal drops, or the screen displays 2G / EDGE ("E") or 3G, common root causes include:
- Learn moreTroubleshooting2 min read
How to Fix the 'PDP Authentication Failure' Error
The "PDP authentication failure" notification indicates that your device cannot establish a data connection with the carrier network.
- Learn moreTroubleshooting2 min read
Purchased eSIM Not Appearing in App: Restore Purchase Guide
After completing payment, a data plan may not immediately appear under the "My eSIMs" tab due to:
- Learn moreTroubleshooting2 min read
What to Do if Unilink App Is Not Available in App Store
The message indicating that the Unilink app is unavailable in your region occurs due to regional store restrictions configured on your current Apple ID account.
Short answers to the stuff everyone asks.
An eSIM is a digital SIM card that is already embedded in your smartphone. You don't need to insert physical plastic: just tap the Install button in our Unilink app or scan the QR code, and the data plan will be downloaded to your device instantly.
The technology is supported by most modern models: iPhone (starting from XS/XR), Samsung Galaxy S20 and newer, Google Pixel and other flagships. Dial *#06# on your device. If an EID number appears, your device supports eSIM. A full list of supported devices can be found on the Device List page.
Yes, you can use an eSIM as a second card for data, keeping your main number active for calls and SMS.
We work directly with local networks around the world, providing you with local rates without intermediaries and the huge markups of your home operator.
Yes! We recommend installing and setting up the eSIM profile while still at home. As soon as you arrive in the destination country, your phone will automatically connect to the local network.
Immediately after payment, the eSIM will appear in the app. Tap the Install button and follow the instructions. If you purchased the eSIM via the website, you will receive an email with a QR code. Go to your phone's cellular settings, select "Add Cellular Plan" and scan the code.
The countdown starts the moment you first connect to the local network, not when you purchase or activate. Install it in advance before your flight.
If you purchased your eSIM through the app, you can buy an additional data package in your personal account. You won't need a new eSIM for this.
A VPN protects your data (passwords, cards) from theft, especially when using Wi-Fi in airports or hotels. It also provides stable access to your usual services and social networks, which may be restricted in other countries.
Yes, all our plans allow you to use your smartphone as a hotspot for other devices.
We accept bank cards (Visa, Mastercard, RU cards), Apple Pay, Google Pay, and cryptocurrencies.
Of course. If there are technical issues on the network side or your device turns out to be incompatible (and you haven't activated the plan yet), we guarantee a refund according to our policy.