This guide explains what an eSIM is, how it works, and how to install it on iPhone and Android. Learn why smart travelers are switching to OVOSIM for fast, affordable connectivity worldwide instead of paying expensive roaming fees.
eSIM Explained
eSIM stands for Embedded Subscriber Identity Module.
Essentially, it is a tiny chip soldered directly to your phone's motherboard. It does everything a traditional plastic SIM does—connects you to networks, allows calls, and provides data—but completely digitally.
How does an eSIM work?
An eSIM uses preinstalled software on your device to function just like a physical SIM. Once you activate it, you can connect to a cell network and use mobile data immediately.
eSIM for travel is a game-changer because it allows you to use multiple carriers at once. You can keep your home number active for calls while using a local data plan abroad.
Popular eSIM Destinations
How to activate an eSIM
The Easiest Way: Ovosim App
Skip the manual settings. Download the Ovosim iOS app to purchase, manage, and install your eSIM with a single tap.
Requires iOS 15.0 or later
How to install manually
Can't scan a QR code? No problem. You can copy and paste the activation details directly into your phone settings.
iPhone Manual Setup
- 1.Go to Settings > Cellular.
- 2.Tap Add eSIM.
- 3.Tap Use QR Code (Don't scan yet).
- 4.Tap Enter Details Manually at the bottom.
- 5.Paste the SM-DP+ Address and Activation Code sent to your email.
Android Manual Setup
- 1.Go to Settings > Connections > SIM Manager.
- 2.Tap Add Mobile Plan.
- 3.Tap Scan Carrier QR Code.
- 4.Tap Enter activation code below the camera frame.
- 5.Paste the code from your email.
Benefits of eSIM Technology
No high roaming fees
Avoid the $10/day fees from home carriers. Connect directly to local networks at local prices.
Multiple Profiles
Store multiple eSIMs on one phone. Switch between Japan, France, and USA profiles instantly.
Less Waste
No plastic cards, no packaging, no shipping trucks. 100% digital and eco-friendly.
Instant Delivery
Need data now? You can buy and activate a plan while waiting for your luggage.
eSIM vs Physical SIM
| Feature | eSIM | Physical SIM |
|---|---|---|
| Network Operators | Multiple at once | Usually one |
| Activation | Instant (Digital) | Manual Insert |
| Travel Cost | Cheap (Local Rates) | Expensive Roaming |
Frequently Asked Questions
Is an eSIM better than a physical SIM?
For travel, yes. An eSIM allows you to install a data plan instantly without visiting a store. It also lets you keep your home SIM card inside your phone so you don't lose it.
Does my phone support eSIM?
Most modern phones do. This includes iPhone XR/XS and newer (iPhone 11, 12, 13, 14, 15), Samsung Galaxy S20 and newer, and Google Pixel 3 and newer. Check our compatibility list to be sure.
Can I use WhatsApp with an eSIM?
Yes! eSIM provides the internet connection. Your WhatsApp, iMessage, and Facetime will continue to work using your existing number and contacts.