An eSIM (embedded SIM) is a virtual SIM card that is built directly into your phone's hardware.
Unlike the traditional plastic cards you have to swap in and out with a tiny needle, an eSIM is a digital profile that you can download over WiFi. It does everything a physical SIM does—connects you to 4G/5G networks—but without the physical hassle.
🛠️ How It Works: A Simple Analogy
Think of it like streaming music vs. buying a CD.
- Physical SIM (The CD): You have to go to a store, buy the physical object, put it in your player (phone), and carry it around.
- eSIM (Streaming): You buy it online, download it instantly, and it plays immediately.
With Roamiya, you scan a QR code, and "poof" — a new local data plan appears on your phone, ready to use in Japan, Europe, or the USA.
✈️ Why Travelers Love eSIM
1. Zero Shipping, Zero Waiting
Forgot to buy a SIM card? No problem. You can buy a Roamiya eSIM while waiting at the airport gate. It arrives in your email in seconds.
2. Keep Your Home Number Active
eSIM allows for Dual SIM functionality.
- SIM 1 (Home): Keep your physical SIM inside to receive SMS verification codes (OTPs) and emergency calls from home.
- SIM 2 (Travel): Use the Roamiya eSIM for all your mobile data (maps, Instagram, browsing).
3. Better Prices
Local roaming with your home carrier (e.g., AT&T, Verizon) can cost $10/day. Roamiya plans often cost that much for an entire week.
4. Eco-Friendly
No plastic manufacturing, no packaging, no shipping trucks. It's the greenest way to connect.
📱 Will It Work on My Phone?
Most iPhones since 2018 (iPhone XS and newer) and most standard Android flagships (Samsung S20+, Pixel 4+) support eSIM.
👉 Check our full Compatibility List here
🔄 Switching Between SIMs
When you install a travel eSIM, you don't lose your main number. Your phone settings will let you choose:
- Default Voice Line: Primary (Home)
- Mobile Data: Roamiya (Travel)
This setup ensures you stop paying expensive roaming data fees while staying reachable.
Ready to Roam?
Browse our data plans for 150+ countries and regions. Connection is just a QR scan away.