Definition
A digital SIM built into your phone, activated by scanning a QR code instead of inserting a plastic card. Indian travellers use a travel eSIM for cheap local data abroad while keeping their Indian SIM in the phone for calls and bank OTPs.
How it works
You buy a data plan for a country or region from an eSIM provider or your travel agent, receive a QR code and scan it in your phone's settings. The plan starts when you land and connect to a local network. Most travel eSIMs are data-only: you get no local number, so you call through WhatsApp or similar apps.
Will your phone support it?
- iPhones from the XS and XR onwards support eSIM, as do recent Google Pixel and Samsung Galaxy S and Z models.
- Many budget and mid-range Android phones sold in India don't. Check your settings, or dial *#06# and look for an EID number.
- The phone must not be locked to one network. Most phones bought in India aren't.
What it costs
At the time of review, data-only plans typically cost about ₹500–1,000 for 5–10 GB over a week in Thailand, Dubai or Singapore, and ₹1,200–2,500 for 10–20 GB over two weeks across Europe. That is usually far cheaper than international roaming for the same amount of data.
Practical tips
- Install the eSIM at home over Wi-Fi a day or two before you fly; some need internet access to download.
- On landing, switch mobile data to the eSIM and turn data roaming off on your Indian SIM.
- Keep the Indian SIM active so bank and card OTPs arrive by SMS.
- Don't delete the eSIM profile until the trip is over; many can't be reinstalled.
- If you need a local number, for example for restaurant bookings in Japan, buy a physical local SIM with voice instead.