Best SIM & eSIM for Thailand from India: Data, UPI, and What Works
✅ Last verified on-the-ground: 2026-07-17
You land at Suvarnabhumi or Don Mueang, and the first decision that costs you real money is the best sim card thailand for indian tourists. Take the wrong booth and you overpay by ₹500-₹800 (~$5.19-$8.30). Skip it entirely and you spend three hours hunting for a 7-Eleven with a passport photocopy. Our SEA backpacking hub covers visas to budgets.
Based on carrier-site pricing, eSIM reseller dashboards, and current PromptPay merchant coverage as of 2026-07-17, the three things that matter are: a tourist SIM that gives you 15 days of data for under ₹1,200 (~$12.46), an eSIM activated before you board your flight from Mumbai or Delhi, and an honest read on whether PhonePe, GPay, or Paytm will let you scan a Thai QR.
Quick Answers
| What | Answer | Price (INR) |
|---|---|---|
| Cheapest physical tourist SIM (15 days, ~15GB) | AIS Traveller SIM at 7-Eleven or AIS counter | ₹1,145 (~399 THB or ~$11.88) |
| Cheapest unlimited 8-day SIM | TrueMove H Trip 8-day unlimited | ₹858 (~299 THB or ~$8.91) |
| Best eSIM to activate in India before flying | Airalo “Thailand” 5GB / 30 days | ₹1,060 (~11 USD) |
| Cheapest eSIM per GB | Holafly Thailand daily plans (unlimited) | $6-9 USD/day |
| Does UPI work in Thailand? | Limited. Mostly fails. Use PromptPay or cash. | 0 THB |
Physical SIM vs eSIM: What Indian Travelers Should Pick
For most Indians visiting Thailand for 7-15 days, the physical tourist SIM from AIS is still the cheapest and most reliable option. The ₹1,145 (~399 THB or ~$11.88) Traveller SIM gives you around 15GB of 5G data, 100 minutes of Thai calls, and 30 days of validity. At current rates (1 THB = ₹2.87 or ~$0.03), 399 THB = ₹1,144 (~$11.88). You can buy it at:
- Suvarnabhumi (BKK) and Don Mueang (DMK) airport AIS counters right after immigration. Yes, it is more expensive than 7-Eleven, but the convenience is worth the ₹200 (~$2.08) premium when you have just landed.
- Any AIS shop or 7-Eleven in Bangkok, Chiang Mai, Phuket, Krabi. Show your passport, get activated in 10 minutes.
- TrueMove and dtac have similar tourist SIMs. AIS has the widest 5G coverage outside Bangkok.
The eSIM is the right call if you are flying into Phuket, Krabi, or Koh Samui with a layover in Singapore, or if you want internet the moment the wheels touch down. Activate it in the Mumbai airport, land in Bangkok with full bars, and skip the queue.
Airalo vs Holafly vs Saily: eSIM Comparison for Thailand
| eSIM Provider | Plan | Data | Price | Best For |
|---|---|---|---|---|
| Airalo “Thailand” | 5GB / 30 days | 5GB | ₹1,060 (~11 USD) | Most Indian backpackers |
| Airalo “Asia” regional | 10GB / 30 days | 10GB | ₹2,408 (~25 USD) | Multi-country SEA trips |
| Holafly Thailand | Unlimited / 5 days | Unlimited | ₹2,794 (~29 USD) | Short trips, heavy users |
| Holafly Thailand | Unlimited / 15 days | Unlimited | ₹5,202 (~54 USD) | Digital nomads, content creators |
| Saily Thailand | 5GB / 30 days | 5GB | ₹1,156 (~12 USD) | Cheaper alternative to Airalo |
| Saily Thailand | 10GB / 30 days | 10GB | ₹1,830 (~19 USD) | Best value 10GB tier |
Best eSIM for most Indians: Airalo 5GB at ₹1,060 (~11 USD). 5GB is enough for 8-10 days of normal use (maps, WhatsApp, Grab, food delivery). Top up via the Airalo app if you run out. You can also browse Thailand eSIM plans on Nomad eSIM for competitive pricing.
Best unlimited eSIM: Holafly daily at $6-9 USD/day. Only worth it if you are streaming or hotspot-ing daily. For backpackers, this is overkill.
The Airalo “Asia” regional plan is the secret weapon if your trip includes Thailand plus Vietnam, Cambodia, or Laos. 10GB across all of them for ₹2,408 (~25 USD). Single eSIM, multiple countries, no SIM-swapping at the border.
eSIM compatibility warning: Most Indian phones sold since 2022 support eSIM, but double-check before you buy. IPhone XS and later, Samsung Galaxy S20 and later, Pixel 4 and later, Nothing Phone 1 and later are fine. Budget Redmi and Realme models often do not have eSIM. If yours does not, the physical AIS SIM is your only option.
AIS vs TrueMove vs dtac: Tourist SIM Pack Comparison
| Carrier | Pack | Data | Validity | Price | Where to Buy |
|---|---|---|---|---|---|
| AIS Traveller SIM | 15GB + 100 mins | 15GB | 30 days | ₹1,145 (~399 THB or ~$11.88) | Airport, 7-Eleven, AIS shop |
| TrueMove H Trip 8-day | Unlimited 4G/5G | Unlimited | 8 days | ₹858 (~299 THB or ~$8.91) | 7-Eleven, TrueMove shop |
| TrueMove H Trip 15-day | Unlimited 4G/5G | Unlimited | 15 days | ₹1,719 (~599 THB or ~$17.84) | 7-Eleven, TrueMove shop |
| dtac Tourist SIM | 6GB | 6GB | 8 days | ₹858 (~299 THB or ~$8.91) | dtac counter, 7-Eleven |
| dtac Happy Tourist 15-day | 15GB | 15GB | 15 days | ₹1,432 (~499 THB or ~$14.86) | dtac counter, 7-Eleven |
Which one to pick:
- 7-9 day trip, heavy user (Grab, Google Maps, video calls home): TrueMove H Trip 8-day unlimited at ₹858 (~299 THB or ~$8.91). No throttling, no daily cap, no buffering on WhatsApp video calls.
- 10-15 day trip, normal user: AIS Traveller 15GB at ₹1,145 (~399 THB or ~$11.88). Best 5G coverage outside Bangkok, enough data for two weeks of city + island hopping.
- Budget-first, short trip: dtac 6GB at ₹858 (~299 THB or ~$8.91). Cheapest option, but only 6GB will run out fast if you hotspot to a laptop.
Real-world coverage note: All three carriers have excellent 4G in Bangkok, Chiang Mai, Phuket, Krabi. AIS leads on 5G coverage and remote-island signal (Koh Tao, Koh Lanta). TrueMove wins on Bangkok BTS station connectivity. Dtac is fine but not better than the other two in any specific way.
Passport requirement: All three carriers require your physical passport to activate. A photocopy is not enough. Carry the original.
Does UPI Work in Thailand in 2026?
The short answer: mostly no. UPI is built on India’s NPCI rails. It works inside India and at a small number of international merchants that have signed integration deals with NPCI. As of 2026-07-17, Thailand is not on that integrated merchant list for general retail.
What this means in practice:
- Most Bangkok malls, Bangkok street food stalls, and Chiang Mai cafes will not show a UPI QR. They show a PromptPay QR instead. For vegetarian-friendly spots that accept cash, check our vegetarian Indian food in Thailand guide.
- Your PhonePe, GPay, or Paytm app will not scan a PromptPay QR. The QR standard is different.
- A few high-end retailers in IconSiam, EmQuartier, and CentralWorld have started showing UPI QR codes through Indian fintech partnerships, but this is a small minority.
- Bangkok airport (Suvarnabhumi) restaurants, some BTS/MRT top-up machines, and most convenience stores are 100% PromptPay or cash only.
What works instead:
- PromptPay (Thailand’s own QR system) at almost every shop, mall, restaurant, and even street food. You cannot use an Indian app for this. You need a Thai bank account or a Thai payment app.
- Cash in THB. Still the universal fallback. Withdraw from a Bangkok ATM (Krungsri, Bangkok Bank, Kasikorn) using your Indian forex or debit card. ₹631 (~220 THB or ~$6.55) ATM fee is standard.
- Wise card or forex card at any Thai merchant that accepts Visa/Mastercard. The Bangkok malls, larger restaurants, 7-Eleven, and Tesco Lotus all take card. Street food and markets are cash.
- Grab app in Thailand works like Uber and lets you pay via cash (THB) or a linked Visa/Mastercard. No UPI.
The honest reality for Indian travelers: Bring ₹8,607-₹14,346 (~3,000-5,000 THB or ~$89.35-$148.92) cash from India, withdraw more from a Bangkok ATM as needed, and do not rely on UPI to work. Reader reports frequently mention travellers standing at a 7-Eleven counter in Bangkok trying to find a UPI option that does not exist.
If you want QR payments in Thailand: Set up a PromptPay wallet through a Thai bank’s app (Bangkok Bank, Kasikorn, SCB). You will need a Thai tourist SIM, a passport, and a few hours in a branch. Not worth it for a 7-day trip, but useful for long stays.
How Much THB to Carry From India
For a full Thailand budget breakdown by day, see our 30,000 baht Thailand budget guide. Indian forex rules let you carry up to ₹288,988 (~3,000 USD) in cash, foreign currency notes, or travellers cheques out of India without customs declaration for the standard ₹2,50,000 basic customs duty-free allowance; the full ₹288,988 (~3,000 USD) per financial year is the overall liberalised remittance limit and is not a cash-on-person exemption. In practice for Thailand, here is what works:
- Carry ₹8,607-₹14,346 (~3,000-5,000 THB or ~$89.35-$148.92) in cash for arrival day (taxi, food, 7-Eleven). Buy THB from Thomas Cook or your bank in India at ₹2.87 (~$0.03) per THB.
- Carry a Visa/Mastercard forex card (HDFC, ICICI, Axis, Niyo Global, Fi) for ATM withdrawals in Thailand. Limit per ATM is usually ₹57,382-₹86,073 (~20,000-30,000 THB or ~$595.69-$893.53).
- Inform your bank before flying. Indian banks freeze cards used abroad without prior intimation, and a frozen card at 11pm in Bangkok is not fun.
ATM math: If you withdraw ₹57,382 (~20,000 THB or ~$595.69) from a Bangkok ATM using an Indian debit card, your bank charges ₹200-₹500 (~$2.08-$5.19) as a forex markup, plus the Thai bank charges a ₹631 (~220 THB or ~$6.55) flat fee. Total effective cost on ₹57,382 (~20,000 THB or ~$595.69): roughly ₹831-₹1,131 (~$8.63-$11.74) in fees, on top of the rate.
Bangkok Airport SIM Scam to Avoid
A common scam at Suvarnabhumi and Don Mueang is the “free SIM card” promoter. For more scams targeting Indian travellers, see our Thailand safety and scams guide. A friendly person near the tourist visa line offers you a free tourist SIM, then leads you to a counter where you are pressured into a ₹4,301 (~1,499 THB or ~$44.65) “premium” plan that includes a bunch of calls and SMS you do not need.
How to avoid it:
- Walk past the promoters. Do not engage. Head straight to the official AIS or dtac counter after immigration.
- The official AIS counter is on the left side, after the customs exit. They speak English, have a price list on the wall, and activate in 10 minutes.
- If the price is not on a printed menu, walk away. Every legitimate Thai SIM counter has visible pricing.
- You do not need a “tourist package with international calls” for a domestic Thailand trip. Skip the upsell.
Where to Buy the SIM in Bangkok (Step by Step)
For Indians who decide to skip the airport counter:
- Take the Airport Rail Link from Suvarnabhumi to Phaya Thai (₹129 (~45 THB or ~$1.34), 30 minutes).
- Walk to any 7-Eleven (there is one on most BTS exits). Show your passport to the staff.
- Pay ₹1,145 (~399 THB or ~$11.88). Staff will activate the SIM in front of you. Make a test call or load a webpage to confirm.
- Top up via the AIS app (download after activation) or buy top-up cards at any 7-Eleven.
If your phone is eSIM-compatible and you bought Airalo, none of this applies. You land with data and skip the queue.
Common Mistakes Indians Make With Thailand SIMs
Mistake 1: Buying a SIM at the airport promotional booth for ₹4,301 (~1,499 THB or ~$44.65) thinking it is the standard price. The ₹1,145 (~399 THB or ~$11.88) plan at the official AIS counter is half that.
Mistake 2: Not bringing your passport to the 7-Eleven. Thai law requires physical passport for SIM activation. A photocopy, a digital scan, or a driving license is not accepted. Travellers regularly get turned away for forgetting this.
Mistake 3: Trusting a friend to “set it up” with their Thai SIM. Sharing an activated SIM between travellers is illegal and the second user often gets cut off within 24 hours. Buy your own.
Mistake 4: Forgetting to disable data roaming on your Indian SIM before you fly. If you keep the Indian Airtel/Jio SIM active for SMS, you might rack up ₹500-₹2,000 (~$5.19-$20.76) in roaming charges the moment you land. Use your phone’s “dual SIM, data only on eSIM” mode, or just remove the Indian SIM while in Thailand.
Mistake 5: Skipping the eSIM because “I’ll get a SIM in Bangkok.” True, but the eSIM gets you from airport exit to Grab car to hotel without a 30-minute mall detour. For a 7-day trip, the ₹1,060 (~11 USD) Airalo eSIM is worth every rupee.
FAQ
Best sim card thailand for indian tourists in 2026? The AIS Traveller SIM at ₹1,145 (~399 THB or ~$11.88) from any 7-Eleven or AIS counter is the cheapest physical option, while the Airalo 5GB eSIM at ₹1,060 (~11 USD) is the best eSIM to activate in India before flying.
Thailand SIM and UPI FAQ
Can I use PhonePe or GPay at a Bangkok 7-Eleven? No. Bangkok 7-Eleven accepts PromptPay QR (Thai system) and cash. Your Indian UPI app will not scan the Thai QR. Pay cash in THB.
Is the Thailand AIS SIM cheaper at the airport or in the city? City. The ₹1,145 (~399 THB or ~$11.88) AIS Traveller SIM is the same price at 7-Eleven and the airport counter. The airport has a ₹1,719 (~599 THB or ~$17.84) “convenience” version that includes a tourist information booklet. Skip it.
How long does it take to activate an eSIM from India? About 5 minutes. Buy the Airalo plan on their website or app, scan the QR code that is emailed to you, restart your phone. Done. You can do this in the Mumbai airport before boarding.
Which is faster in Bangkok: AIS, TrueMove, or dtac? AIS has the fastest 5G in central Bangkok (Siam, Sukhumvit, Silom). TrueMove is comparable in BTS stations. Dtac lags slightly. For Phuket and Chiang Mai, AIS is the clear winner.
Can I keep my Indian WhatsApp number active while using a Thailand eSIM? Yes. ESIMs handle data only. Your Indian SIM continues to receive WhatsApp messages via Wi-Fi or via your home mobile data when you are connected. Just turn off data roaming on the Indian SIM to avoid charges.
Do Thai SIMs include a Thai phone number? Yes. AIS, TrueMove, and dtac all assign a local Thai number. You can use it for Grab, Foodpanda, and Thai restaurant reservations.
Is the TrueMove 8-day unlimited SIM unlimited? Yes for 8 days. After day 8 the data stops, but you can top up the same SIM for another ₹858 (~299 THB or ~$8.91) if you extend your trip. No throttling, no FUP. 299 THB = ₹858 (~$8.91).
Subodh’s Take
No UPI, and a fat wad of THB. That is the setup that works for Indian backpackers moving smoothly through Thailand. Buy the Airalo eSIM in India before you fly, and never assume PhonePe will save you. Carry ₹14,346 (~5,000 THB or ~$148.92), withdraw more from a Bangkok ATM, and tip in cash. Thailand is one of the easiest countries in Southeast Asia to navigate. For timing your trip around weather and deals, see our best time to visit Thailand from India guide. The trick is to land prepared.
