What Is Data Roaming, and How Does an eSIM Card Replace It?
Aqib HassanAn eSIM card is a digital SIM card built into your phone. Also called an embedded SIM, e SIM, or e-sim, no card swap is needed. Skip Jio, Airtel, and Vi roaming charges with a HelloRoam plan and get instant cellular data when you land in 185+ countries.
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What Is an eSIM Card? eSIM Explained
Jio charges ₹575 per day for international roaming and Airtel charges ₹596 per day. An eSIM removes that cost entirely. It is a digital SIM card built into your phone that gives you instant cellular data in 185+ countries without swapping a physical card. Unlike a removable SIM, the embedded chip is soldered into your phone's motherboard and stores carrier profiles in software. Also written as e SIM or e-sim, it connects you to cellular networks for calls, SMS texts, and mobile data with no card to insert, lose, or swap at IGI Airport before your flight. What is cellular? Cellular is the mobile network technology (4G LTE or 5G) that carries your calls and internet data. Jio, Airtel, and Vi are the main cellular carriers in India.
The GSMA, the industry body that manages the SGP.22 eSIM standard, defines how phones store and switch carrier profiles wirelessly. This technology is also called a virtual SIM or digital SIM card because the entire profile lives in software. Most phones released after 2018 have this chip built in. Compatible models include iPhones (XS through iPhone 16), Samsung Galaxy devices (S20 through Galaxy S25), Google Pixels (3 through Pixel 9), and OnePlus phones from OnePlus 9 onward. HelloRoam, built by FutureSyncs Ltd (UK Companies House 15950168), helps Indian travellers skip data roaming charges, avoid the physical SIM card swap at the airport, and get online the moment they land.(Source: GSMA SGP.22 eSIM Specification)
How Does an eSIM Work? (iPhone and Android Setup)
An eSIM works by using built-in software to download and store a cellular carrier profile on your phone. Once active, it connects you to mobile networks, lets you make calls, send texts, and use cellular data (mobile internet for browsing, streaming, and apps) the same way a physical SIM card does. What is data roaming? Data roaming means your phone uses a foreign carrier's network outside India, and Jio, Airtel, or Vi charge you extra for each day. An eSIM from HelloRoam connects you to local networks directly, so you pay local rates with no roaming surcharges. You can check our compatibility list if you are unsure about your specific model.(Source: GSMA SGP.22 eSIM Specification) check our compatibility list
Getting started takes about 5 minutes: buy a prepaid eSIM plan, open your confirmation email, and scan the QR code. Your physical SIM card stays in place the whole time. Run both at once in dual SIM mode, with the eSIM handling cellular data and your Jio or Airtel SIM keeping your home number active for calls and WhatsApp. On iPhone, go to Settings, Cellular, Add eSIM, and scan the QR code. On Android, go to Settings, Network, SIM manager, and tap Add. You can store multiple eSIM profiles and switch between them at any time. This is the value-for-money way for Indian travellers to stay connected abroad.
How Do You Set Up an eSIM?
Choose a data plan for your destination and complete checkout online or in the HelloRoam app.
Your eSIM installs right away. It activates when you arrive at your destination country.
Check your remaining data, top up if needed, and manage all your plans in the HelloRoam app.
Choose a data plan for your destination and complete checkout online or in the HelloRoam app.
Your eSIM installs right away. It activates when you arrive at your destination country.
Check your remaining data, top up if needed, and manage all your plans in the HelloRoam app.
Why eSIM Plans Beat Data Roaming: Key Advantages for Indian Travellers
eSIM Disadvantages to Know Before You Buy
Jio international packs start at ₹575 per day and Airtel at ₹596 per day. An eSIM plan from HelloRoam gives you local data rates in Dubai, Bangkok, Singapore, and London without those daily charges. Here is what Indian travellers gain by switching from a physical SIM card to a prepaid eSIM.
No bill shock when you land
Skip the scramble for a local SIM at IGI Airport or Chhatrapati Shivaji Maharaj International. With an eSIM, you connect to local carriers and get data at local network speeds the moment you land, with no extra roaming recharge from Jio, Airtel, or Vi.
Multiple profiles on one phone
Your phone can hold multiple eSIM profiles at once. Switch between carriers for Dubai, Singapore, or the US without pulling out a tiny physical card.
Pay for what you need
Heading to Dubai for 7 days? Buy a 7-day plan instead of a monthly one. Pay only for what your trip actually needs. No hidden charges, no lock-in.
Frees up device space
No physical SIM slot means manufacturers can use that space for a bigger battery or other hardware. Good for India's growing mid-range phone market.
Cannot be lost or stolen
Lost your bag at Dubai Airport or pickpocketed in Bangkok? Your eSIM stays safely inside your phone. It cannot be removed or stolen the way a physical SIM card can.
Less plastic waste
One less plastic card in a landfill every trip. Switching to a digital SIM card is a simple step toward greener travel from India.
Not sure if your device supports eSIM?
Most phones released after 2019 support eSIM, including iPhone XS through iPhone 16, Samsung Galaxy S20 through Galaxy S25, Google Pixel 3 through Pixel 9, and OnePlus 9 and newer. Many phones popular in India, including Xiaomi, Realme, and Vivo flagship models, also support eSIM. Check your device before you book your next trip.
Check CompatibilityeSIM vs SIM Card: What Is the Difference?
A SIM card is a small physical chip that connects your phone to a cellular network. An eSIM does the same job digitally, without a removable card. Physical SIM vs eSIM: both handle calls, texts, and cellular data. The digital version wins on flexibility, speed, and security. For Indian travellers heading to Dubai, Singapore, or Thailand, eSIM means no airport SIM counter queue and no ₹575/day Jio or ₹596/day Airtel international recharge. An e SIM is also called a virtual SIM or digital SIM card because the carrier profile lives in software, not on a removable chip.
Phone numbers
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Compatibility
Use abroadeSIM vs Data Roaming: How Much Can Indian Travellers Save?
Jio charges ₹575 per day for international roaming. Airtel charges ₹596 per day. Vi offers a 24-day international pack at ₹2,999. HelloRoam prepaid eSIM plans come in at a fraction of those rates, as of April 2026. An e SIM for international travel from India costs far less than activating a daily roaming add-on from any Indian carrier. Data roaming is what happens when your phone connects to a foreign network and your home carrier charges extra. HelloRoam skips that entirely.
Save up to 84% on
data costs
HelloRoam plans start at ₹106.16. No contracts, no hidden charges, and a 180-day money-back guarantee.(Source: HelloRoam pricing analysis, 2026)
Browse PlansCommon eSIM Problems and Fixes
Running into a problem with your eSIM installation or cellular data? Our 24/7 support team on WhatsApp sees these issues often. Here are quick fixes for the most common problems Indian travellers face after scanning the QR code.
QR code will not scan
No data service after activation
eSIM not showing in settings
Cannot remove an old eSIM profile
Two eSIMs causing conflicts
Activation code rejected
“eSIM technology is the biggest shift in mobile connectivity since the smartphone. Travelers no longer need to choose between staying connected and overpaying.”
Popular eSIM Destinations
Frequently Asked eSIM Questions
An embedded digital SIM is better than a physical SIM card for international travel because it activates without a card swap. Physical SIM vs eSIM: the physical card requires you to visit a store or find an airport counter at your destination, while digital activation happens by scanning a QR code from India before you fly. HelloRoam plans start at ₹106.16 and cover 185+ countries. Compare that to Jio's ₹575 per day or Airtel's ₹596 per day international roaming charge. A physical SIM still makes sense for older phones that do not support the embedded chip.
HelloRoam activation on Android takes about 5 minutes. Open your confirmation email and scan the QR code with your camera app. Go to Settings, then Network and internet, then SIM manager, and tap Add eSIM. Samsung Galaxy S20 and newer, Google Pixel 3 and newer, OnePlus 9 and newer, and many Xiaomi and Realme flagship models support this feature. Connect to Wi-Fi before you start. Your Jio or Airtel SIM stays active for calls while the HelloRoam plan handles data.
Samsung Galaxy S20 through S25 series all support embedded SIM. So do the Galaxy Z Fold and Z Flip series from 2020 onward. To activate a HelloRoam plan on a Samsung device, go to Settings, then Connections, then SIM manager, and tap Add. Scan the QR code from your confirmation email. Your device must be carrier-unlocked and not blocked by your Indian carrier to install a travel data plan.
HelloRoam eSIM plans cost far less than Jio or Airtel international packs, as of April 2026. Jio charges ₹575 per day. Airtel charges ₹596 per day. Vi charges ₹2,999 for a 24-day pack. HelloRoam connects you via local mobile network operators in each country so you pay local rates instead. Buy the plan before your trip, scan a QR code, and it activates when you land. No hidden charges, no daily roaming bills sent to your family back home.
Most modern phones with embedded SIM support dual SIM mode, letting you run both a digital profile and a physical SIM at the same time. Keep your Jio or Airtel SIM active for calls, SMS, and WhatsApp back to family in India while your HelloRoam plan handles cellular data abroad. Dual SIM mode is supported on iPhone XS and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer, and OnePlus 9 and newer. This is the standard setup for Indian travellers.
Students travelling from India for studies abroad can use HelloRoam eSIM to stay connected from day one on campus. Buy a plan before leaving India, scan the QR code, and get cellular data in the UK, USA, Canada, or Australia when you land. Your Jio or Airtel SIM stays active for calls home. eSIM plans are prepaid with no contracts, so you pay only for the time you are abroad. HelloRoam covers 185+ countries, ideal for semester trips and gap year travel.
HelloRoam eSIM is worth it for any Indian traveller visiting Dubai, Bangkok, Singapore, London, or New York more than once a year. HelloRoam plans save up to 84% compared to Jio or Airtel international roaming rates, as of April 2026. Buy a plan in minutes from your phone, scan a QR code, and you are connected when you land. No airport SIM counter queue, no hidden charges. For NRI travellers visiting India, eSIM also means no physical SIM swap when you arrive at Mumbai or Delhi.
HelloRoam travel eSIMs provide data only and do not assign a new phone number. Your existing Jio, Airtel, or Vi number stays active on your physical SIM card for calls and texts. The travel eSIM handles mobile data at local rates, which avoids data roaming charges from your Indian carrier. For voice calls over data, use WhatsApp, FaceTime, or Zoom from your HelloRoam eSIM connection.
Jio supports embedded SIM on iPhone XS and newer and select Android devices when activated through the MyJio app or a Jio store. Airtel supports it on the same range via the Airtel Thanks app. Vi (Vodafone Idea) also supports compatible handsets through the Vi app. These domestic carrier profiles are separate from international travel plans. For travel outside India, add a HelloRoam plan as a second profile alongside your Jio or Airtel domestic SIM. Both lines run at the same time in dual SIM mode.
OnePlus 9, OnePlus 9 Pro, OnePlus 10 Pro, OnePlus 11, OnePlus 12, and OnePlus 13 all support embedded SIM. To activate a plan on a OnePlus device, go to Settings, then Wi-Fi and network, then SIM and network, and tap Add. Scan the QR code from your HelloRoam confirmation email. Make sure your OnePlus device is carrier-unlocked before purchasing a plan. Most OnePlus phones sold directly, not through a locked carrier plan, are unlocked by default.
What is data roaming? Data roaming is when your phone connects to a foreign carrier's network outside India and Jio, Airtel, or Vi charges you extra for each day or per MB used. Jio charges ₹575 per day, Airtel charges ₹596 per day, and Vi's 24-day international pack costs ₹2,999. With a HelloRoam eSIM, you connect directly to local network operators abroad at local rates. You pay a single fixed amount before your trip instead of accumulating per-day roaming bills from your Indian carrier.
Budget Android phones from Realme and Vivo generally do not support eSIM, but select flagship models do. Realme GT 2 Pro, Realme GT 5 Pro, and Vivo X80 Pro support embedded SIM. Entry-level and mid-range Realme or Vivo devices under ₹20,000 typically rely on a physical SIM only. To confirm your specific model, go to Settings, then Network and internet, then SIM manager, if you see an Add eSIM option, your phone supports it. Visit the HelloRoam device compatibility checker before purchasing a plan, 84%, ₹106.16.
Sources
- GSMA eSIM Specification (SGP.22)(Accessed April 2026)
- ITU-T Recommendation E.118 — International Telecommunication Charge Card(Accessed April 2026)
- Apple — About eSIM(Accessed April 2026)