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 or e SIM, it lets you skip Jio, Airtel, and Vi roaming charges. Buy a prepaid eSIM plan from HelloRoam and get instant cellular data when you land in 175+ countries.
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eSIM activated
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What Is an eSIM Card? eSIM Explained
An eSIM is an embedded SIM card soldered directly into your phone's motherboard. Also written as e SIM, e-SIM, or e-sim, it is a digital SIM card that stores carrier profiles in software. Unlike a traditional physical SIM card, there is no card to insert, lose, or swap at the airport. It connects you to cellular networks for calls, texts, and cellular data. What is data roaming? Data roaming is what happens when your phone connects to a foreign network and your home carrier charges extra. Jio charges Rs 575 per day, Airtel charges Rs 596 per day, and Vi has a 24-day pack at Rs 2,999. An eSIM lets you skip all that by connecting directly to local rates.
The GSMA, which manages global eSIM standards, defines the specification that lets you store and switch carrier profiles wirelessly. This is sometimes called a virtual SIM or digital SIM because the entire carrier profile lives in software. Buy a HelloRoam plan before you fly, scan the QR code, and you are connected at every destination on your itinerary. What is itinerary travel? Your travel itinerary is your planned list of destinations and stops. A HelloRoam eSIM covers 175+ countries, so one plan can take you across your whole trip. Before you leave, enable a data warning on your phone before you fly. What is data warning? It is the notification your device sends when your remaining data is low, so you can top up before running out mid-trip.
How Does an eSIM Work? (How Do eSIMs Work on iPhone and Android)
An eSIM works by using built-in software to download and store a cellular carrier profile directly on your phone. What is mobile data? Mobile data is the internet service delivered through a cellular network. What is data mobile phone use? It is the same browsing, messaging, and streaming capability you use at home in India, just routed through a local carrier abroad. Once your eSIM is active, your phone connects to mobile networks, makes calls, sends texts, and uses cellular data exactly as a physical SIM does. 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 your eSIM handling cellular data and your Jio or Airtel SIM keeping your home number active for calls. On iPhone, go to Settings, Cellular, Add eSIM, and scan the QR code. You can store multiple eSIM profiles and switch between them at any time. This is the value-for-money way to stay connected when travelling from India.
How Do You Set Up an eSIM?
Choose a data plan for your destination and complete checkout online or in the app.
Your eSIM installs right away. It activates automatically when you arrive at your destination.
Check your remaining data, top up if needed, and manage all your eSIMs from the app.
Choose a data plan for your destination and complete checkout online or in the app.
Your eSIM installs right away. It activates automatically when you arrive at your destination.
Check your remaining data, top up if needed, and manage all your eSIMs from the app.
Why eSIM Plans Beat Data Roaming: eSIM Advantages for Indian Travellers
eSIM Disadvantages to Know Before You Buy
eSIM plans give you local cellular data rates without data roaming charges. Indian travellers heading to Dubai, Thailand, Singapore, or the UK can skip the Jio or Airtel roaming recharge and pay local rates instead. Here is what you gain by switching from a physical SIM card to a prepaid eSIM plan.
No bill shock when you land
Skip the scramble for a local SIM at the airport. With an eSIM, you connect to local carriers and get data at local speeds the moment you land, with no extra recharge from your home carrier.
Multiple profiles on one phone
Your phone can hold multiple eSIM profiles at once. Switch between carriers or numbers without pulling out a tiny 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.
Frees up device space
No physical SIM slot means manufacturers can use that space for a bigger battery or other hardware upgrades.
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.
Less plastic waste
One less plastic card in landfill every trip. Switching to an eSIM is a simple step toward greener travel.
Not sure if your device supports eSIM?
Wondering if your iPhone or Android supports eSIM? Most phones released after 2019 do, including popular models sold in India. The e-sim chip does not affect your physical SIM card or phone number. Many phones can store 8 or more eSIM profiles at once. 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 is an embedded SIM that does the same job digitally, without a removable card. Physical SIM vs eSIM: both handle calls, texts, and cellular data, but eSIM wins on flexibility, setup speed, and eSIM security. An eSIM is also called a virtual SIM or digital SIM card because the carrier profile lives in software. For Indian travellers, this means no airport SIM counter visit and no Jio, Airtel, or Vi international recharge pack needed.
Phone numbers
Network operators
Removal
Activation
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 pack at ₹2,999. HelloRoam prepaid eSIM plans come in at a fraction of those rates. An eSIM card for international travel costs far less than activating a roaming add-on from any Indian carrier. TRAI regulates international roaming, but local data plans through HelloRoam let you pay local rates instead.
Save up to 77% on
data costs
HelloRoam eSIM plans start at ₹151.29. No contracts, no hidden charges.
Browse PlansCommon eSIM Problems and Fixes
Running into a snag with your eSIM installation or cellular data? Here are quick fixes for the most common eSIM issues 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
FAQs
An eSIM (also called an e SIM, e-SIM, or e-sim) is a digital SIM card built into your phone's circuit board. It replaces a physical SIM card. How do eSIMs work? You download a carrier profile over Wi-Fi, and your phone activates data without swapping any card. On iPhone, eSIM is a built-in cellular plan stored in Settings under Cellular. On a prepaid plan, you buy online, scan a QR code, and the eSIM activates automatically when you land. HelloRoam uses eSIM technology to connect travellers to local networks in 175+ countries. Most eSIM compatible phones hold up to 8 profiles at once.
An eSIM gives you more flexibility than a physical SIM card for international travel. Physical SIM vs eSIM: the physical SIM needs a card swap at your destination, while eSIM activates over Wi-Fi before you leave India. HelloRoam eSIM plans start at ₹151.29 and cover 175+ countries. Compare that to Jio roaming at Rs 575 per day or Airtel at Rs 596 per day. The only trade-off is that older or budget phones may not support eSIM yet.
HelloRoam eSIM plans cost a fraction of what Jio or Airtel charge for international roaming, as of April 2026. A typical 5GB plan runs far less than Jio's Rs 575 per day or Vi's Rs 2,999 for 24 days. HelloRoam connects you via local mobile network operators in each country so you pay local rates instead of Indian carrier international fees. Buy the prepaid plan before your trip, scan a QR code, and it activates when you land. No hidden charges.
Most modern phones support dual SIM mode, letting you keep both an eSIM and a physical SIM active at the same time. Keep your Jio or Airtel SIM for calls and WhatsApp while your HelloRoam eSIM handles cellular data abroad. Dual SIM vs eSIM-only: dual SIM gives you two active lines, while eSIM-only means the phone has no physical SIM tray. iPhone XS and newer, Samsung Galaxy S20 and newer, and Google Pixel 3 and newer all support dual SIM with eSIM.
An eSIM is not transferable to another phone once installed. To move to a new device, remove the profile from your old phone and contact HelloRoam support for a new activation code. Travel eSIMs tie to the device they were installed on, so always save your QR code and order confirmation as a backup.
The main disadvantages of eSIM are limited device support, no physical transfer between phones, and the need for internet to install. Older phones and many budget models still require a physical SIM card. Some smaller regional carriers have not added eSIM support yet. eSIM pros and cons in short: pros include instant activation, multiple profiles, and no lost card risk; cons include device restrictions and carrier support gaps.
eSIM is worth it for Indian travellers who visit Dubai, Thailand, Singapore, UK, or the USA and want to avoid Jio or Airtel roaming charges. HelloRoam eSIM plans save up to 77% compared to standard Indian carrier international packs. Buy a local data plan before your trip and activate it by scanning a QR code. For anyone travelling more than once a year, eSIM pays for itself on the first trip.
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 eSIM handles mobile data at local rates, which avoids data roaming charges from your home carrier. For voice calls, use WhatsApp or FaceTime over your eSIM data connection.
Your existing phone number stays on your physical SIM card when you use an eSIM for travel. HelloRoam eSIM plans handle data only, so your Jio or Airtel SIM stays active for calls and texts. Both lines run at the same time on eSIM compatible phones. You choose which line handles data in your phone settings.
HelloRoam eSIM plans cover multiple countries, with regional options spanning Europe (30+ countries) or Southeast Asia on a single profile. You can also store separate country-specific plans and switch between them in your phone settings. Most eSIM compatible phones hold 8 or more eSIM profiles at once, so you can have plans ready for Dubai, Thailand, Singapore, and the UK before you travel. HelloRoam offers cellular data plans across 175+ countries total.
Turn off Data Roaming for your home carrier SIM line, not for the eSIM line. On iPhone, go to Settings, Cellular, tap your Jio or Airtel line, and switch off Data Roaming. Leave Data Roaming on for your HelloRoam eSIM line so it can connect to local networks abroad. What is data roaming for iPhone users? On an iPhone, data roaming is the feature that lets your device use mobile data on foreign carrier networks outside India. With a HelloRoam eSIM, you pay a fixed prepaid rate instead of Jio or Airtel international per-day charges.
HelloRoam eSIM installation takes about 5 minutes on most eSIM compatible phones. Buy a plan on the HelloRoam website or app, open your confirmation email, and scan the QR code with your phone camera. On iPhone: go to Settings, Cellular, then Add eSIM. On Android: go to Settings, Network, then SIM manager. Keep your Jio or Airtel SIM for calls and add the HelloRoam eSIM as a second cellular data line. Most phones support 8 or more stored eSIM profiles, with one active for data at a time. Connect to Wi-Fi before you start.
