Automatic
RecommendedTap the installation link from the email. Your device sets up the eSIM automatically — no scanning, no typing codes.
*Works on iPhone and iPad with iOS 17.4 or later, and on most recent Android phones.
Buyer's Guide
How to buy, install, and activate an eSIM
Verify your device, install via email or QR, then turn on the eSIM when you land.
Hi, I'm TailSim!
How it works
Check · Install · Activate
The three steps covered in detail below.
Check device compatibility
First — make sure your phone supports eSIM. Most phones from 2018 onward work. Check on this page below.
Verify your deviceInstall your eSIM
After purchase, install via the email link or scan the QR from your phone settings. Both methods work.
Activate on arrival
Turn on the eSIM line when you land. Your primary SIM keeps calls and WhatsApp working — the eSIM carries the data.
Step 1
First — check the device works
Available on every country page, the homepage, and at the bottom of the page. Use it if you don't know whether your phone supports eSIM.
Note: search your brand and model here. iPhones from XS onward and most Android phones from 2019 onward are supported.
Step 2
Two ways to install the same eSIM
You get both in the same email. The link is faster on modern devices; the QR works on any eSIM-capable phone.
QR Code
Universal fallbackScan the QR code from the email with your phone's camera and follow the on-screen steps to activate the eSIM.
*Works on any eSIM-capable phone. QR is one-time use — scanning again won't work.
Both arrive in your email. The quick link works on iOS 17.4+ and recent Android. The QR code works on any eSIM-capable phone.
Visual guide
Installation walkthrough, phone by phone
Each step shows what you'll see on your phone screen. Follow along with your device to install the eSIM.
iPhone
iOS 14+Settings → Cellular
Connect to Wi-Fi first, then open Settings → Cellular (or Mobile Data).
Add eSIM
Tap Add eSIM (older iOS: Add Cellular Plan).
Scan the QR
Pick Use QR code. Open the email on another device, then point the camera at the QR.
Continue → Done
iPhone detects the eSIM in seconds. Tap Continue, then Done. Don't exit the process.
Set default lines
Voice/iMessage → primary. Data → eSIM. Turn OFF "Allow Cellular Data Switching" to avoid roaming charges.
Android
Pixel · SamsungNetwork & Internet
Connect to Wi-Fi first. Open Settings → Network & Internet.
Add Mobile Network
Tap + Add Mobile Network (Samsung: SIM manager → Add eSIM).
Scan the QR
Tap Next when asked about a SIM card. Point the camera at the QR from the email.
Confirm eSIM
Wait ~30s. Tap Done. The plan shows in Mobile Network settings.
Enable data & roaming
In Mobile Network: turn on Mobile Data and Data Roaming for the eSIM. Set APN if the plan requires it.
Step 3
Activate when you land
One toggle on the eSIM line. Your primary SIM keeps calls and WhatsApp working.
Cellular
SIMs
Primary
+1 555 0100
Travel · Japan
TailSim · eSIM
Data Roaming ON · WhatsApp keeps your home number
Turn on the eSIM when you land. Your primary line stays active for calls and WhatsApp. Data flows through the eSIM — your home carrier stays out of data charges.
Ready to skip the airport SIM line?
Pick a destination, customize the plan, and we email the eSIM in under a minute.
Quick answers
Frequently asked questions
When does my plan start counting?
From the first successful data connection in the destination country — not from purchase, not from QR install.
Can I install on more than one device?
QR codes are single-use. The automatic link also binds to one device. You'll need a separate plan for a second device.
What if my phone is older than 2018?
eSIM needs compatible hardware. Most phones released before 2018 (and many older Android models) don't have it. Check compatibility on any destination page before you buy.
Will my home carrier charge roaming?
Only if you keep your home SIM line active for data abroad. Once the eSIM is the data line, the home carrier doesn't charge for data.