If you've traveled internationally in the past 5 years, you've probably heard the term eSIM.
But what exactly is it, how does it work, and should you use one for your next trip? This guide explains everything.
What Does eSIM Mean?
eSIM stands for embedded SIM. Unlike a traditional SIM card that you physically insert into your phone, an eSIM is a tiny chip soldered onto your phone's motherboard. You activate it digitally - typically by scanning a QR code.
Think of it as the difference between a physical key and a digital key for a hotel room. The eSIM is the digital key - no need to swap anything physical when changing mobile networks.
How Does eSIM Work?
- You purchase an eSIM plan online (from ICC, for example)
- You receive a QR code via email within minutes
- On your phone, go to Settings → Cellular/Connections → Add eSIM
- Scan the QR code with your phone camera
- Your phone downloads the eSIM profile and activates it
- You're connected to a local network at your destination
The whole process takes about 2 minutes.
ICC now provides the One Click Install function for all customers.
If your phone supports eSIM and you purchase from ICC, you will receive an email with a One Click Install button. Simply open the email, tap the button, and follow the step-by-step instructions. Your eSIM will be installed automatically.
What Devices Support eSIM?
Most phones made since 2019 support eSIM. Here's the comprehensive list:
Apple Devices
- iPhone XR, XS, XS Max (2018) and newer
- iPhone SE (2nd gen, 2020) and newer
- iPad (7th gen+) with cellular
- Apple Watch Series 3+ (cellular models)
Samsung Devices
- Galaxy S20, S21, S22, S23, S24 series
- Galaxy Note 20 series
- Galaxy Z Flip and Z Fold series
- Galaxy A54 and newer mid-range
Google Devices
- Pixel 3, 4, 5, 6, 7, 8, 9 series
- Pixel Fold
Other Brands
- Huawei P40, Mate 40 and newer
- Xiaomi 13, 14 series
- OnePlus 9 and newer
- Most 2020+ flagship phones
Quick check: dial *#06# on your phone. If you see an EID number, your phone supports eSIM.
eSIM vs Physical SIM: Key Differences
| Feature | eSIM | Physical SIM |
|---|---|---|
| Activation | QR code (2 min) | Insert card (manual) |
| Shipping | Instant (email) | 1-5 days |
| Switching devices | Re-download only | Pop out and insert |
| Multiple profiles | 5-10 eSIMs on one device | 1-2 physical slots |
| Travel convenience | Buy and activate from anywhere | Need to find a store |
| Lost/stolen | Cannot be physically removed | Can be removed and used elsewhere |
For travelers, eSIM wins on almost every dimension.
Benefits of eSIM for International Travel
1. Buy Before You Fly
Purchase your destination eSIM while still at home. The QR code arrives in your email. Install it the moment you land - no airport SIM shop queues.
2. Keep Your Home Number Active
Most eSIM phones are Dual SIM. Use ICC eSIM for data abroad while keeping your home SIM for calls and texts. Both work simultaneously.
3. No Roaming Bills
Local rates, not roaming.
etc 5-day Japan eSIM costs about $2.99 SGD. Roaming with most carriers costs $10-15 per day.
4. Switch Countries Instantly
Traveling to multiple countries? Store multiple eSIMs and switch with one tap. No physical card swaps.
5. Environmentally Friendly
No plastic SIM card, no packaging, no shipping.
How Much Does an eSIM Cost?
eSIM prices vary by country and data amount. Typical ICC pricing:
- Japan 5-day unlimited: $2.99 SGD
- Thailand 7-day 3GB: $3.79 SGD
- USA 15-day 10GB: $8.79 SGD
- Europe 30-day 10GB: $8.59 SGD
Compared to typical roaming charges: $10-15 USD per day. eSIM saves 70-90% on data costs abroad.
Is eSIM Safe and Secure?
Yes. eSIMs are encrypted and tied to your device's hardware. They cannot be cloned or transferred without your phone. Most security experts consider eSIM more secure than physical SIM cards because there's no card to steal.
Limitations of eSIM
eSIM isn't perfect for every situation:
- Older phones (pre-2019): No eSIM support
- Some developing countries: Limited eSIM carrier coverage
- One-time activation: Most eSIMs activate only once and cannot be reinstalled
- QR code scanning: Requires a working camera on your phone
For these cases, ICC also sells physical travel SIM cards.
How to Buy an ICC eSIM
- Visit icard.com.sg
- Browse eSIM collection by destination
- Select your country and data plan
- Checkout (Visa, Mastercard, PayPal, PayNow, GrabPay, ShopPay)
- Receive QR code via email within 5 minutes
- Scan QR code to activate eSIM
Conclusion
eSIM is the future of mobile connectivity, especially for international travelers. It's faster, cheaper, and more convenient than physical SIMs or roaming. With coverage in 190+ countries and instant delivery, ICC eSIM makes global connectivity effortless.
Ready to try? Browse ICC eSIM collection or check our FAQ page for more details.