Using UPI in Singapore: A Guide for Indian Tourists

Indian tourists can use UPI in Singapore at any merchant displaying a NETS QR code, provided they have an active internet connection and their Indian SIM is enabled to receive transactional SMS. To make this work seamlessly without incurring massive roaming charges, you should use a YatraSim eSIM for your data needs while keeping your primary Indian SIM active in a dual-SIM setup to receive essential OTPs for banking and UPI authentication.

How UPI Works in Singapore for Indians

The cross-border linkage between India's Unified Payments Interface (UPI) and Singapore's PayNow system has revolutionized how Indian travelers spend in the Lion City. Through the partnership between NPCI International Payments Limited (NIPL) and NETS (Network for Electronic Transfers), you can now scan a NETS QR code at thousands of retail outlets, hawker centers, and convenience stores using your favorite Indian apps like BHIM, PhonePe, and Google Pay.

When you scan a QR code, the app converts the Singapore Dollar (SGD) amount into Indian Rupees (INR) based on the prevailing exchange rate. You then authorize the transaction with your UPI PIN. However, there is a technical catch: for the UPI app to function, your phone must be able to verify your identity via your Indian mobile number. This often requires the app to send or receive a background SMS or, at the very least, have the Indian SIM card active in the device to maintain the cryptographic link to your bank account.

The Connectivity Challenge: Data vs. OTPs

Most Indian travelers face a dilemma upon landing at Changi Airport. If you buy a local physical SIM card, you usually have to remove your Indian SIM (if you have a single-SIM phone) or disable it to avoid accidental roaming charges. The moment your Indian SIM is inactive, your UPI apps may stop working or fail to re-verify if needed. Furthermore, you will not receive the SMS OTPs required for high-value netbanking transactions or logging into travel apps.

On the other hand, activating an international roaming pack from carriers like Jio or Airtel can be prohibitively expensive. These packs often provide limited high-speed data and charge a premium for the convenience. This is where YatraSim provides a value-driven alternative. By installing a digital eSIM, you can designate it as your primary data source while keeping your Indian SIM active solely for incoming SMS. Since incoming SMS is generally free on most Indian roaming profiles (check with your provider), you get the best of both worlds: cheap local 5G data and uninterrupted access to UPI.

Why Choose YatraSim for Singapore?

When you see plans for Singapore, you will notice that YatraSim leverages the best local infrastructure. We partner with M1 and SingTel to provide 5G connectivity, as well as Starhub for 4G coverage. This ensures that whether you are in the basement of a mall on Orchard Road or taking photos at the top of Marina Bay Sands, you have a stable connection to process your UPI payments.

Our plans are strictly "data only," meaning they do not come with a local Singaporean phone number. While this might seem like a limitation, it is actually an advantage for the modern traveler. You don't need a local number to use WhatsApp, Telegram, or Google Maps. You can make WhatsApp calls to your family back in India or to local Singaporean businesses using your YatraSim data. Most importantly, it prevents any conflict with your Indian SIM, which remains your primary identity for UPI and WhatsApp.

Coverage Realities in Singapore

Singapore is one of the most connected cities in the world.

• Changi Airport: Upon arrival, you will find excellent coverage across all terminals. You can activate your eSIM using the airport Wi-Fi and start using Grab or checking MRT routes immediately.
• The MRT System: Unlike many other cities, Singapore's underground rail network has exceptional cellular coverage. You can browse, stream, and even initiate UPI payments at station kiosks without drops.
• Sentosa and Attractions: Whether you are at Universal Studios or the Night Safari, the 5G signal from SingTel and M1 remains robust. Even in the more "rural" parts of the island, such as the Sungei Buloh Wetland Reserve, you will find reliable 4G signals.

Comparing Connectivity Options

Feature	Indian Roaming Pack	Local Physical SIM	YatraSim eSIM
Cost	Very High	Moderate	Low
Convenience	No setup needed	Must find a booth/queue	Instant digital delivery
OTP Access	Yes	No (if SIM is swapped)	Yes (Dual SIM mode)
Data Speed	Variable/Throttled	High	5G (SingTel/M1)
Local Number	Indian Number	Singapore Number	Data Only

Step-by-Step Setup for UPI Success

To ensure your UPI works the moment you step out of Changi, follow these steps to set up your dual-SIM environment. First, ensure your device is on the device compatibility list to support eSIM technology.

On iPhone:

1. Purchase your plan and scan the QR code received via email.
2. Go to Settings > Cellular.
3. Label your Indian SIM as "Primary" and your YatraSim as "Travel".
4. Under Cellular Data, select "Travel". Ensure "Allow Cellular Data Switching" is OFF to prevent your phone from using expensive Indian roaming data.
5. Under Default Voice Line, keep it as "Primary".
6. Go to your Primary (Indian) SIM settings and ensure Data Roaming is OFF, but the line is ON.

On Android:

1. Go to Settings > Connections > SIM Card Manager.
2. Add the eSIM using the provided details.
3. Set the eSIM as the preferred SIM for Mobile Data.
4. Keep your Indian SIM as the preferred SIM for Calls and Messages.
5. In the mobile network settings for your Indian SIM, ensure "Data Roaming" is disabled to avoid charges.

By following this installation guide, your phone will use YatraSim for all internet-heavy tasks like maps and social media, while your Indian SIM remains in standby mode, ready to catch that 6-digit OTP when you pay for your Hainanese Chicken Rice via UPI.

Data Needs for Singapore Travel

How much data do you really need? If you are primarily using your phone for UPI, Google Maps, and occasional social media uploads, a 3GB or 5GB plan for a week is usually sufficient. However, if you are a student or a heavy user who streams video during MRT commutes, you might want to see plans offering 10GB or 20GB.

Singapore is a city that relies on apps. From the "Visit Singapore Travel Guide" to booking tickets for the Gardens by the Bay, every activity consumes data. If you are traveling to other regions later, such as visiting the Suvarnabhumi Airport in Thailand or exploring the Palm Jumeirah in Dubai, YatraSim offers similar local and regional plans to keep you connected.

Common Pitfalls to Avoid

• Disabling the Indian SIM: Some travelers turn off their Indian SIM to be "safe." Don't do this. If the SIM is off, your UPI app cannot verify your account, and you won't receive OTPs. Just disable "Mobile Data" for that SIM.
• Relying Solely on Public Wi-Fi: While Singapore has many hotspots (Wireless@SGx), they are often not secure or require a local number to register. For financial transactions like UPI, a private 5G connection via an eSIM is significantly more secure.
• Not Checking UPI Limits: Some banks have lower limits for international UPI transactions. Check your bank app settings before you leave India.

The bottom line

Using UPI in Singapore is a game-changer for Indian tourists, allowing you to avoid the hassle of currency exchange and high forex markups on credit cards. To make it work, you need a dual-SIM strategy: keep your Indian SIM active for OTPs and use a YatraSim eSIM for affordable, high-speed 5G data. This setup ensures you stay connected, your payments remain seamless, and you save money compared to expensive international roaming packs.