You're at a hotel in Paris. You need to pay for dinner using Google Pay. Your phone asks for an OTP. The OTP goes to your Jio number. Jio has no signal. Dinner gets awkward.
This is the #1 anxiety for Indian travelers — and yet almost no travel eSIM provider addresses it. This guide solves it completely.
Why Indian Travelers Face This Problem
Indian banking apps (HDFC, SBI, ICICI, Axis, Kotak) and UPI platforms (Google Pay, PhonePe, Paytm) are tied to your Indian mobile number for:
- 2FA/OTP verification
- Transaction alerts
- Login confirmations
- UPI PIN resets
When you're abroad and switch to a local SIM or use only a travel eSIM, your Indian number loses signal — and OTPs stop arriving.
The good news: Modern smartphones with dual SIM or eSIM support can keep both connections active simultaneously.
The Solution: Dual SIM Setup
Here's the exact configuration that works:
For iPhone users (iPhone XS and newer)
- SIM slot (physical): Keep your Indian SIM (Jio/Airtel/Vi)
- eSIM: Install your travel eSIM (like Trovio)
- Settings → Cellular:
- Primary (Indian SIM): Calls & SMS only, Data: OFF
- Travel eSIM: Data: ON, Set as default data line
- Result: Your Indian number stays reachable for OTPs. Your travel eSIM handles all internet traffic.
The key step: Turn off data roaming on your Indian SIM. This prevents Jio/Airtel from billing you for roaming data. You only pay for incoming SMS (usually free under most plans, or a small roaming SMS fee — check your plan).
For Android users (Samsung Galaxy, OnePlus, Pixel, etc.)
- SIM 1: Insert Indian SIM
- SIM 2 / eSIM: Install travel eSIM
- Settings → SIM Card Manager (or Dual SIM):
- Set travel eSIM as default data SIM
- Indian SIM: keep active for calls and SMS, disable mobile data
- Result: Same as iPhone — dual connection, zero roaming charges on data.
What About Roaming SMS Charges?
Most Jio and Airtel prepaid plans include free incoming SMS while roaming — but check your specific plan. If yours doesn't:
- Jio International Roaming Plans start at ₹575 for SMS-only roaming
- Alternatively: Enable iMessage / WhatsApp as your OTP fallback where possible
- Some banking apps now support authentication via app notification (no SMS needed)
Which Banking Apps Work Without SMS OTP?
Increasingly, Indian banks are adding app-based authentication that doesn't require SMS:
| App | Alternative to SMS OTP |
|---|---|
| HDFC NetBanking | SecurePass (in-app) |
| Kotak Bank | Kotak Secure Login |
| ICICI | iMobile app authentication |
| Google Pay | Works if phone is trusted device |
| PhonePe | Device-bound authentication |
Tip: Before your trip, enable trusted device authentication on your banking apps. This reduces your dependence on SMS OTPs significantly.
Step-by-Step: Setting Up Before Your Trip
7 days before departure
-
Check if your phone supports dual SIM / eSIM:
- iPhone XS+ = eSIM + physical SIM
- iPhone 14+ in India = Dual eSIM supported
- Android: Check your model's spec sheet
-
Enable international roaming on your Indian SIM (for SMS only):
- Jio: MyJio app → International Roaming
- Airtel: Airtel app → Roaming packs → SMS-only option
-
Set up trusted device authentication on banking apps
-
Test your UPI apps — make sure they work without SMS OTP on your device
At the airport (or on landing)
- Scan the eSIM QR code from your Trovio app
- The eSIM installs in under 2 minutes
- Configure data settings as above
- Test: open Google Maps, browse a website — confirm you're online
- Test: send yourself a test SMS from another phone to confirm OTP delivery
Common Questions
Will my UPI work abroad? UPI works for Indian merchant payments regardless of where you are — as long as your internet connection is active. International merchants don't accept UPI directly, but you can use UPI to pay family/friends in India and top up your linked bank account.
Can I use GPay / PhonePe abroad? For sending money within India: yes. For paying international merchants: no — they don't accept UPI. Use a forex card or international credit card for international payments.
What if I didn't set up roaming before leaving? You can often activate roaming packs via:
- Jio: WhatsApp the word "ROAMING" to 199 (works even abroad)
- Airtel: The Airtel app works over WiFi
- Vi: Vi app or call customer care via WiFi calling
Does this work in all countries? The dual-SIM setup works everywhere your Indian carrier has a roaming partner — which covers 100+ countries. Check your carrier's roaming partner list before travel.
The Bottom Line
You don't have to choose between cheap travel data and Indian banking access. The dual-SIM approach gives you both:
- Travel eSIM (like Trovio): fast, affordable internet data
- Indian SIM (Jio/Airtel): stays connected for OTPs and calls, no data charges
This setup is what every Indian traveler should use. It's what Trovio is designed for.
Join the Trovio waitlist to get early access and a step-by-step dual-SIM setup guide in the app.