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What is an eSIM and How Does it Work?
An eSIM (embedded SIM) is a digital SIM card built into your device, allowing you to activate a mobile plan without inserting a physical SIM. You can connect to a carrier or travel data provider simply by scanning a QR code or using an app.
Unlike traditional SIMs, an eSIM is rewritable, secure, and lets you store multiple mobile profiles — making it easy to switch between plans anytime, anywhere.
How Does an eSIM Work?
An eSIM works through remote SIM provisioning — your carrier or eSIM provider sends a digital profile to your device. Once installed, the eSIM connects to the carrier's network just like a physical SIM.
- You purchase or receive an eSIM plan.
- You scan a QR code or download the eSIM via an app.
- The eSIM activates automatically and connects you to the network.
Your device manages multiple profiles seamlessly, without a need for physical swapping.
eSIM vs Physical SIM: What's the Difference?
Embedded digital chip Activate with QR code or app Switch profiles in Settings instantly Store multiple eSIM profiles Built-in and secure Purchase and activate online In short: eSIMs replace physical cards with a digital, flexible alternative.
Benefits of Using an eSIM
Instant activation
Get online instantly without store visits.
Dual Numbers
Keep your home line active abroad.
No roaming fees
Avoid expensive fees with local plans.
Sustainable
Go green with zero plastic packaging.
Secure
Safe from theft, removal, or cloning.
Global Reach
Enjoy support across 200+ regions.
- Device Support: Check if your specific model is compatible.
- Carrier Choice: Not every network provider is eSIM-ready.
- Transfer Steps: Moving profiles isn't as fast as swapping cards.
- Online Setup: Requires Wi-Fi or data to install initially.
Which Device Support eSIM?
| Brand | eSIM-Compatible Models |
|---|---|
 Apple | iPhone XS / XR and newer, iPad Pro (3rd gen +), Apple Watch Series 3+ |
 Samsung | Galaxy S20 / Note20 / Z Flip / Fold series and later |
 Google | Pixel 3 and newer |
 Huawei | P40 / Mate 40 and newer |
 Others | Lenovo, Oppo, Xiaomi, Motorola, and select laptops with LTE modules |
The list of eSIM compatible devices is constantly evolving. Please check with your device manufacturer for the latest information.
How to set up an eSIM
Set up an eSIM manually on your iPhone
- Go to Settings → Cellular → Add eSIM.
- Tap Use QR Code or Transfer from Nearby iPhone.
- Scan your eSIM QR code and follow on-screen instructions.
- Your new plan activates automatically.
Set up an eSIM manually on your Android
- Go to Settings → Connections → SIM Manager → Add eSIM.
- Choose Scan QR code or Enter activation code manually.
- Wait a few seconds for activation—your phone connects automatically.
Once activated, your eSIM is stored securely and can be switched or deleted anytime.
The Best Way to Stay Connected Abroad
Skip the airport SIM kiosks. Get online the moment your plane lands.
- Activate your data before you fly; get signal immediately upon arrival.
- One app covers all your destinations. No swapping plastic cards.
- From weekend getaways to global adventures, buy only what you need.
Frequently Asked Questions about Travel eSIMs
Need more help?
Can't find what you're looking for? Our support team is available 24/7 by email or chat to guide you through setup and troubleshooting.
Check if eSIMNum offers coverage for your destination country or region.
Understand whether eSIMNum plans include a phone number and how to make calls and send texts.
Step-by-step guide on how to purchase and receive your eSIM from eSIMNum.
Special instructions for activating eSIM on iOS devices purchased in Turkey.
Get tips on selecting the best eSIM plan for your travel destination and needs.
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