Vietnam SIM Card for Indians: Roaming vs Local (2026)

Vietnam SIM Card for Indian Travelers: Roaming vs Local SIM Compared (2026)

✅ Last verified on-the-ground: 2026-07-17

Indian travelers heading to Hanoi, Ho Chi Minh City, Da Nang, or Phu Quoc hit the same fork before they board: the vietnam sim card roaming question — keep their Indian SIM on international roaming, or buy a local SIM on landing. The right choice depends on trip length and data needs.

I cross-checked Viettel, Mobifone, and Vinaphone tourist SIM prices across airport kiosks and carrier stores, and reviewed current Jio and Airtel roaming pack rates, to put real numbers on the three options: international roaming, physical local SIM, and the third option most articles skip entirely, an eSIM you set up before you fly.

If you want the shortest possible answer: a physical tourist SIM from Viettel or Mobifone wins on price-per-GB for any trip longer than four days. Roaming only beats it on the first three days when convenience is worth paying 8x more per gigabyte. ESIM sits in the middle, useful if you have a dual-SIM phone with no spare slot, expensive if you need a lot of data.

Subodh’s Pro Tip: Before you decide, check whether your Indian carrier (Jio Postpaid, Airtel) already includes Vietnam in a “no extra cost” international pack. Jio’s “Welcome” offer has quietly added countries twice in the last 18 months. If Vietnam is on your plan’s included list, the math flips, and roaming becomes the cheapest option by a wide margin.

Quick Answers

What	Answer	Price (INR)
Cheapest option for a 10-day trip	Viettel tourist SIM (₹479 (~130,000 VND or ~$4.97), 6GB)	₹450 (~$4.67)
Cheapest option for a 3-day weekend	Indian roaming “Welcome” pack (if active)	₹0 to ₹500 (~$5.19)
eSIM data-only, 7 days, 5GB	Nomad eSIM regional plan	~₹700 (~$7.26)
Indian roaming daily data pack (Jio)	IR data pack, 250 MB/day	₹500 (~$5.19) to ₹700/day
Airport SIM vs city store SIM	Same price, slower queue at airport kiosks	₹479 (~130,000 VND or ~$4.97) either way

Roaming on Your Indian SIM: When It Makes Sense

Indian roaming in Vietnam has improved a lot. Jio and Airtel both sell packs explicitly targeting Southeast Asia, and the welcome/discovery offers are aggressive enough that “free international roaming” is no longer a joke post. The catch is that these offers are tied to specific postpaid plans, and the data allowance is small.

Here’s what the current packs look like for Indian travelers going to Vietnam in 2026:

Jio postpaid, IR pack for Vietnam:

• Daily pack: 250 MB high-speed data + unlimited incoming, valid 24 hours
• Weekly pack: 1 GB high-speed data + unlimited incoming, valid 7 days
• Daily data pack cost: roughly ₹500 (~$5.19) to ₹700 (~$7.26) per day (the exact number shifts with FX and current Jio pricing)
• Weekly data pack cost: roughly ₹2,800 (~$29.04) to ₹3,500 (~$36.31) per week

Airtel postpaid, IR pack for Vietnam:

• Daily pack: 300 MB + unlimited incoming
• Cost: ₹600 (~$6.22) to ₹800 (~$8.30) per day
• Airtel sometimes bundles Vietnam into its “World Pass” at a lower rate on higher-tier plans

Vi/Airtel prepaid IR packs exist but are stingier on data and cost roughly the same per day. Most Indian travelers going to Vietnam are on postpaid Jio or Airtel, so the postpaid numbers above are what matters.

The math: at ₹600/day for 300 MB, that’s ₹2,000 (~$20.75) per GB. A Viettel tourist SIM at ₹479 (~130,000 VND or ~$4.97) for 6 GB works out to ₹75 (~$0.78) per GB. Roaming costs you 25x more per gigabyte than a local SIM.

So why would anyone use roaming? Three reasons:

1. You’re only in Vietnam 3 days. A weekly roaming pack at ₹3,000 (~$31.12) beats buying a product you’ll use for 50 hours.
2. Your phone is locked to Jio or Airtel. Carrier-locked phones won’t accept a foreign SIM. Yes, this still happens, especially on phones bought under EMI plans or postpaid bundles.
3. You need your Indian number active. Some travelers want OTPs on their Indian WhatsApp, banking apps, and UPI logins without forwarding. Roaming keeps the number live.

For everything else, local SIM wins.

Safety Alert: Don’t rely on your Indian number for OTPs in Vietnam. Jio and Airtel will deliver OTPs while you’re roaming, but a few specific services (some Indian banking apps, a handful of state government portals) block any login attempt from a foreign IP, even if the phone number is Indian. The way out is to use the SIM’s hotspot to route your laptop or to use eSIM for data while keeping your Indian SIM in for calls and texts.

Local Vietnam SIM Cards: Viettel, Mobifone, Vinaphone

Vietnam has three big carriers: Viettel, Mobifone, and Vinaphone. They all sell tourist SIMs at the airport and at carrier stores in tourist districts. The Viettel and Mobifone tourist packs are nearly identical; Vinaphone’s tourist pack is rare at airports but easy to find in city centers.

Viettel Tourist SIM (the default)

Viettel is the largest carrier in Vietnam and has the widest 4G coverage, especially in rural areas, mountain regions, and along the Hai Van Pass between Hue and Da Nang. Their standard tourist pack in 2026:

• ₹479 (~130,000 VND or ~$4.97)
• 6 GB high-speed data
• 30-day validity
• Free incoming calls
• Some outgoing minutes (varies, usually 50 minutes domestic)
• Available at Tan Son Nhat (HCMC), Noi Bai (Hanoi), Da Nang, and Phu Quoc airport kiosks immediately after customs

The airport kiosk is the easiest spot. Staff speak enough English to register your passport, set up the SIM, and hand you a small instruction card. The whole process takes 10 minutes, including queue time.

Mobifone Tourist SIM

Mobifone runs an almost identical pack:

• ₹479 (~130,000 VND or ~$4.97)
• 6 GB high-speed data
• 30-day validity
• Free incoming calls
• Better urban 4G speed in HCMC and Hanoi, slightly weaker in the Mekong Delta

If you’re spending most of your time in the cities, Mobifone’s network is faster. If you’re heading to Sapa, Ha Giang, or Phong Nha, Viettel has the better rural footprint.

Vinaphone Tourist SIM

Vinaphone tourist packs are less common at airport kiosks. They’re worth it if you’re heading to coastal cities (Nha Trang, Quy Nhon, Quang Ngai) where Vinaphone has good coverage. Pricing is similar:

• ₹552 (~150,000 VND or ~$5.73)
• 5 GB high-speed data
• 30-day validity
• Free incoming calls

Data-Only SIM vs Unlimited Data SIM

A common point of confusion: Vietnam tourist SIMs are almost always data-capped, not “unlimited.” When you cross 6 GB, the SIM doesn’t stop working; it throttles heavily, which is unusable for Google Maps, Grab, or anything beyond basic WhatsApp.

If you need heavy data (constant tethering, video calls, hours of navigation), look for these specific packs:

• Viettel daily unlimited data add-on: ₹110 (~30,000 VND or ~$1.15) for 24 hours of unmetered data. Stack this on top of your tourist plan if you need a data-heavy day.
• Mobifone weekly data add-on: ₹331 (~90,000 VND or ~$3.44) for 7 days, 15 GB high-speed. This is the closest thing to a true unlimited plan for backpackers.
• Vinaphone monthly heavy user pack: ₹737 (~200,000 VND or ~$7.64) for 30 days, 30 GB high-speed.

The daily and weekly add-ons reset your high-speed data, which is what you want. Instead, you stack add-ons.

Where to Buy

At the airport (easiest, slowest queue): Tan Son Nhat, Noi Bai, Da Nang, and Phu Quoc airports all have official Viettel and Mobifone kiosks just past customs. They accept cash in VND and sometimes INR/USD at bad rates. Use a forex card instead.

In city carrier stores: Look for the green Viettel logo or the blue Mobifone logo. Staff in tourist districts (HCMC District 1, Hanoi’s Old Quarter, Da Nang’s Han Market area) speak some English. You’ll need your passport for registration, which is mandatory under Vietnamese telecom law.

At convenience stores: Some 7-Eleven and Circle K locations in tourist areas sell tourist SIMs, but the staff often can’t activate them properly. Skip this option unless the airport or carrier store is closed.

eSIM for Vietnam: The Third Option Most Guides Skip

ESIM is the option every other comparison misses, and it’s worth thinking about seriously if you have a dual-SIM phone (most Indian flagship phones since 2022 are dual-SIM + eSIM, including the iPhone 13 onward, Samsung Galaxy S22 onward, and the Pixel 7 onward).

The way it works: you buy a data plan from a regional eSIM provider before you fly. The provider emails you a QR code. You scan it from your phone’s settings, the eSIM profile downloads over Wi-Fi, and you have data the moment you land. No physical SIM, no kiosk queue, no passport registration at the airport.

Nomad eSIM (regional Asia plan)

Nomad sells a Southeast Asia regional plan that covers Vietnam, Thailand, Cambodia, and Laos:

• 5 GB / 7 days: ~₹700 (~$7.26)
• 10 GB / 15 days: ~₹1,200 (~$12.45)
• 20 GB / 30 days: ~₹1,800 (~$18.67) For a 14-day Vietnam-only trip, the 10 GB / 15 days plan is the closest match. At ₹1,200 (~$12.45) for 10 GB, it’s 12x cheaper per GB than Indian roaming and roughly 2.5x more expensive than a physical Viettel SIM. You’re paying for the convenience.

Airalo Vietnam plan

Airalo is the bigger brand and the most-cited option in other comparison guides. Their Vietnam-only plans:

• 5 GB / 30 days: ~₹1,000 (~$10.37)
• 10 GB / 30 days: ~₹1,600 (~$16.60)
• Unlimited / 30 days: ~₹2,500 (~$25.93)

Airalo’s “unlimited” plan is technically capped but the throttle threshold is generous.

When eSIM beats physical SIM

• You have no spare SIM slot. If you’re using your Indian SIM for calls and SMS, eSIM is the only way to get a second data line without removing your home number.
• You land late at night. No airport kiosks are open, no carrier stores are open. ESIM activates over any Wi-Fi, including the airport’s free Wi-Fi.
• You’re hopping between countries. A regional plan covers Vietnam + Thailand + Cambodia + Laos in one purchase, no SIM-swapping required.

When eSIM loses to physical SIM

• You need a Vietnamese phone number. eSIMs from Nomad and Airalo are data-only. They don’t include a local number. You can’t receive OTPs from Vietnamese apps, can’t register for Grab with a local number, can’t call domestic Vietnamese landlines. Physical SIMs all include a number.
• You’re on a budget and burning data. At ₹479 (~130,000 VND or ~$4.97) for 6 GB from Viettel, eSIM is hard to justify on price alone.
• Your phone doesn’t support eSIM. This still rules out many mid-range Indian phones (anything before 2022 in some cases, plus a handful of 4G-only budget models). Check your phone’s specs on the manufacturer’s site before relying on eSIM.

For most Indian backpackers, the practical answer is: buy a physical Viettel SIM at the airport for the local number and cheap data, and skip eSIM. But if your phone has no free SIM tray, the Airalo 10 GB / 30 days plan is a clean fallback.

Get Nomad eSIM is the easiest option to set up before you fly, especially if you’re also stopping in Thailand or Cambodia on the same trip.

Picking the Right Option for Your Trip

Here’s how the three options break down by trip length and use case:

Trip	Best option	Why	Cost (INR)
2-3 days, city only	Jio/Airtel IR pack	Cheapest if your plan already has Vietnam in the welcome pack	₹0 to ₹2,400 (~$24.90)
4-7 days, any itinerary	Physical Viettel SIM	Lowest cost per GB, includes local number	₹450 (~$4.67) to ₹1,000 (~$10.37)
7-14 days, dual-SIM phone	Physical SIM + eSIM as backup	Local number for Grab + eSIM if SIM has issues	₹450 (~$4.67)+ ₹700 (~$7.26)
14+ days, heavy data	Viettel tourist SIM + weekly Mobifone add-on	Stacked add-ons beat any single roaming plan	₹450 (~$4.67)+ ₹310 (~$3.22) per week
Multi-country (Thailand + Vietnam + Cambodia)	Regional Nomad eSIM	One plan, no SIM-swapping at borders	₹1,200 (~$12.45) to ₹1,800 (~$18.67)
No free card slot, no eSIM	Jio/Airtel IR pack	Only option that works	₹600 (~$6.22) per day

The decision tree is short. Check whether your Indian carrier’s welcome pack includes Vietnam. If yes and you’re under 4 days, use roaming. If no, or you’re longer than 4 days, buy a physical tourist SIM at the airport. ESIM is the fallback for dual-SIM phones and late-night arrivals.

Setting Up Your SIM: What Happens at the Kiosk

If you decide on a physical SIM, here’s the actual process at Tan Son Nhat or Noi Bai airport in 2026:

1. Walk past customs and baggage claim. The SIM kiosks are in the public arrivals hall, before you exit the terminal building.
2. Look for the green Viettel logo or the blue Mobifone logo. Both are usually there, sometimes with a Vinaphone stall in between.
3. Hand over your passport. The staff will scan it, take a photo of you for the registration (mandatory under Vietnamese law), and ask which pack you want.
4. They insert the SIM, confirm the APN settings auto-applied, and ask you to load a webpage to test the connection.
5. Pay cash in VND or card. The card machine sometimes fails at the smaller kiosks, so bring cash as a backup.
6. Total time: 10-15 minutes including queue.

One trap to avoid: the “free card” kiosks you sometimes see in arrivals. These are usually from resellers who will register a connection under your passport, hand it to you, and then ask for a “service fee” of ₹368-₹737 (~100,000-200,000 VND or ~$3.82-$7.64) at the end. Skip them. Go directly to the official carrier stalls.

If you forget or run out of time at the airport, every major city has carrier stores within 1 km of the tourist district. In HCMC, the Viettel store on Le Loi Street and the Mobifone store on Nguyen Hue both handle tourist registrations without an appointment.

Topping Up and Extending Your SIM

Tourist SIMs come pre-loaded with 6 GB and 30 days of validity. When you run out of data or time, you have three options to extend:

Carrier app (best): Download the Viettel (My Viettel) or Mobifone (My MobiFone) app, log in with the phone number on your SIM, and buy a data add-on. The app is in Vietnamese by default, but the English toggle is in the top-right corner.

Carrier store: Walk in with your passport, ask for a top-up or extension. The staff will handle it. Cost is the same as the app, no service fee.

Scratch cards: Sold at every convenience store and pharmacy. You scratch off the code, dial a USSD number (the welcome card has the dial code), and the data loads. The cards come in ₹184 (~50,000 VND or ~$1.91), and ₹737 (~200,000 VND or ~$7.64) denominations.

Most Indian travelers go for the app. The interface is the same as Jio or Airtel’s, just in Vietnamese first.

For the full step-by-step on topping up, including the exact USSD codes for Viettel, Mobifone, and Vinaphone, see our Vietnam SIM card top-up guide.

Connectivity Beyond the SIM

Even with a 6 GB Viettel SIM, you’ll hit moments where the connection drops or the data runs out. A few habits that save you in Vietnam:

• Download offline Google Maps for your whole route before you leave India. Vietnam’s mountainous regions (Ha Giang Loop, mountainous areas around Sapa) have spotty coverage. The Viettel SIM has the best reach, but even Viettel drops in deep valleys.
• Save your hostel’s address and Grab driver pickup points in Vietnamese script. Show the script to taxi drivers; English addresses confuse most drivers outside HCMC and Hanoi.
• Keep a small stash of cash (₹184-₹368 (~50,000-100,000 VND or ~$1.91-$3.82)) for data top-ups. The scratch cards at convenience stores are the fastest fallback when you run out of data at 11 PM and the carrier app is timing out.
• Use Grab for in-city transport. Grab works over data, shows the fare upfront, and avoids the tuk-tuk and taxi bargaining dance.

For more on keeping your phone and other electronics safe in Vietnam, our electronics guide for Southeast Asia travel covers power adapters, power banks, and the rules on what to bring from India. If you’re planning a wider Southeast Asia trip, our SEA backpacking hub ties together country-specific SIM, visa, and budget guides for every stop on the route.

What About Coverage in Specific Vietnamese Regions?

Coverage is mostly uniform across the three carriers in cities, but it varies a lot in specific regions:

• Phu Quoc: All three carriers work fine on the main island. The south beaches (Bai Truong, An Thoi) have weaker signal than Duong Dong town.
• Ha Giang Loop: Viettel only. Mobifone and Vinaphone drop out within 30 km of Ha Giang city.
• Mekong Delta (Ben Tre, Tra Vinh, Soc Trang): Viettel and Vinaphone are both weak. Mobifone is the strongest in this region.
• Sapa and the northern mountains: Viettel wins by a wide margin. The terraced rice paddy viewpoints have signal only because Viettel built out towers specifically for tourism.
• Da Nang, Hoi An, Hue: All three carriers are equally good. Speed is 4G+ in cities, drops to 3G on the road between Hue and Hoi An.

If you’re doing the full north-to-south route, stick with Viettel. For more detail on which carrier wins where, our Viettel vs Mobifone vs Vinaphone comparison goes deep on each.

FAQ

Will my Indian Jio/Airtel phone accept a Vietnamese SIM?

Yes, if it’s unlocked. Most phones sold in India since 2020 are unlocked by default, but phones bought under Jio Postpaid EMI or Airtel postpaid bundles sometimes have a carrier lock that takes 6-12 months to expire. To check, insert any other Indian SIM; if it works, your phone is unlocked. If you bought your phone abroad or from a non-authorized retailer, check the IMEI on the manufacturer’s site.

Do I need a passport to buy a SIM in Vietnam?

Yes. Vietnamese law requires all SIMs to be registered to a passport or Vietnamese ID card. The airport kiosks and carrier stores handle this as part of the activation. Don’t try to buy a SIM from a street vendor who says “no passport needed”; the SIM won’t work.

Can I make calls from my Vietnam SIM to India?

Yes, but international calls are expensive. A 1-minute call from a Viettel SIM to an Indian mobile costs roughly ₹15-₹22 (~4,000-6,000 VND or ~$0.15-$0.23). If you need to call India regularly, use WhatsApp, FaceTime, or Google Meet over data instead. It’s free and the voice quality is better.

What happens to my Indian number while I’m in Vietnam?

If you buy a local SIM, your Indian number stays active in your Indian SIM (which you’ll keep with you or leave at home). To use your Indian SIM for SMS or UPI OTPs, you’ll need to put it in a second slot, which is where eSIM helps. Otherwise, your Indian number sits in your bag, ringing and receiving SMS whenever you’re on Wi-Fi with the Indian SIM inserted in a phone.

Is pocket WiFi a better option than a SIM?

For solo travelers, no. Pocket WiFi rentals cost ₹295-₹442 (~80,000-120,000 VND or ~$3.06-$4.58) per day (~₹275-₹415), which is more than a 14-day tourist card. Pocket WiFi makes sense only for groups of 3-4 people sharing one device. For a head-to-head breakdown, see our pocket WiFi vs SIM comparison.

Do I need a Vietnam phone number for Grab, Zalo, or local apps?

Grab accepts any international number for registration. Zalo, the local messaging app, requires a Vietnamese phone number to register. If you want to use Zalo to contact homestays or local services in Vietnam, you’ll need the physical SIM with a local number. ESIMs and roaming won’t work for this.

Will my phone’s 5G work in Vietnam?

Vietnam rolled out 5G in 2024-2025 in HCMC, Hanoi, and Da Nang. Viettel has the widest 5G footprint. If your Indian phone supports the right 5G bands (most Indian phones since 2022 do), you’ll get 5G in city centers. In rural areas and smaller towns, you’ll drop back to 4G. The tourist SIMs work fine on both.

Subodh’s Take: Buy a Viettel tourist SIM at the airport. For a 10-day Vietnam trip, 6 GB covers Google Maps, Grab, WhatsApp calls, and enough Instagram scrolling to feel like a vacation, all for ₹479 (~130,000 VND or ~$4.97). Indian roaming is 25x more expensive per gigabyte and gets you nothing extra beyond convenience. Skip the eSIM unless your phone has no spare slot; the per-GB cost is too high for what you’re getting. The only exception: if your Jio or Airtel plan already includes Vietnam in a no-extra-cost welcome pack, the math flips, and you should test it on day one before buying anything.