What is an eSIM and how does it work?
An eSIM (embedded SIM) is a digital version of a physical SIM card. It's already integrated in your device – whether a cell phone, tablet, or smartwatch.
eSIMs work in the same way as traditional SIM cards. Once activated, they connect you to a local mobile network. This lets you use mobile data, make calls, and send texts.
To activate an eSIM, you need to scan a QR code or download a manual profile from your provider's eSIM app. Having followed a few on-screen steps, your eSIM will be ready for use.
eSIM vs. SIM cards: What's the difference?
The main difference between an eSIM and a SIM card is that an eSIM exists in your device. It is invisible and doesn't need to be inserted into your SIM card slot like a physical SIM.
| Feature | Physical SIM card | eSIM card |
|---|---|---|
| Shape | Small removable plastic chip | Built-in chip (not visible) |
| Setup | Insert manually into SIM slot | Activate by QR code or app |
| Switching operator | Swap out SIM card | Switch in settings instantly |
| Number of plans supported | Typically one (or two) at a time | Store multiple, use one at a time |
| Durability | Can be lost or damaged | Can't be lost or damaged |
| Security | Easy to remove or misuse | Harder to remove or misuse |
| Travel convenience | Must buy and insert local SIM or use home carrier roaming | Can buy and activate travel eSIM online |
Why should I use an eSIM? 7 Benefits
📲 Buy Online, Activate Instantly
You can buy an eSIM online, have it delivered digitally, and activate it within minutes.
🔁 Easy to Switch Carriers
It's easy to switch eSIM carriers or profiles from your settings without any physical SIM swapping.
🔒 Can't Be Lost or Stolen
An eSIM can't be lost, damaged, or stolen since it's embedded directly in your device.
🌱 Environmentally Friendly
A digital SIM card can't cause environmental damage from plastic waste like physical SIM cards.
💸 Much Cheaper than Roaming
eSIM cards are a much cheaper option than international roaming, saving you up to 90% on data costs.
✈️ Install Before You Travel
You can buy and install an eSIM for international travel at home, before activating in minutes once you land.
🌍 Multi-Country Coverage
Some eSIMs cover multiple destinations under one plan, perfect for multi-country trips with no SIM swapping needed.
How to get an eSIM
Getting an eSIM from Teraroma is quick and easy. Follow these simple steps:
Check device compatibility
Make sure your device supports eSIM technology
Visit Teraroma's website
Browse our travel eSIM plans for your destination
Choose your plan
Select the travel plan that suits your trip
Purchase and install
Buy your eSIM, receive the QR code, and install before you travel
Activate on arrival
Follow the simple steps to activate your eSIM once you land
How to activate an eSIM
Once you've made your purchase and received the QR code, activating your eSIM is super simple. No matter which mobile device you're on, the entire process shouldn't take more than a few minutes.
How to activate on iPhone
- Go to Settings
- Tap Cellular (or Mobile Service on EU devices)
- Locate and tap the Add eSIM button
- Choose the Use QR Code option
- Scan your QR code and follow the prompts
How to activate on Android
- Go to Settings
- Open the Connections menu
- Locate and tap the SIM Manager option
- Tap Add eSIM, then Scan QR code
- Scan your QR code and follow the prompts
After completing the setup, you'll have a mobile network connection in the designated country almost instantly.
Plans You May Be Interested In
Based on your location in Ashburn, United States, we recommend these eSIM plans:
United States Travel eSIM
Perfect for your upcoming trips
Regional Multi-Country
Use in multiple countries nearby
