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🇹🇭 eSIM for Thailand
Thailand is a heavy-data destination: ride-hailing, island ferry bookings and translation all run through apps, and airport SIM counters charge a tourist premium for the convenience.
Thailand eSIM plans and prices
In short: Num sells 14 prepaid data eSIM plans for Thailand, from $3.28 for 500 MB per day (1 day) up to 50 GB over 180 days at $65.60. The best value per gigabyte is 10 GB total for 30 days at $9.63 ($0.96). It connects to AIS, CAT, DTAC, True Move and TrueMove H with 5G on some plans. Validity starts when the eSIM first connects in Thailand, it installs by QR code on any eSIM-capable iPhone, and your own number keeps working.
Live prices, updated from our provider catalogue · 3G/4G/5G, 3G/4G. These are the amounts charged at checkout — nothing is added afterwards.
| Plan | Validity | Total data | Per GB | Price |
|---|---|---|---|---|
| 500 MB per dayTop-up available | 1 day | 500 MB | $6.72 | $3.28 |
| 2 GB per dayTop-up available | 1 day | 2 GB | $1.64 | $3.28 |
| 1 GB per dayTop-up available | 1 day | 1 GB | $3.34 | $3.34 |
| 3 GB totalTop-up available | 15 days | 3 GB | $1.16 | $3.48 |
| 3 GB totalTop-up available | 30 days | 3 GB | $1.23 | $3.69 |
| 1 GB totalTop-up available | 7 days | 1 GB | $3.69 | $3.69 |
| 3 GB per dayTop-up available | 1 day | 3 GB | $1.64 | $4.92 |
| 5 GB totalTop-up available | 30 days | 5 GB | $1.11 | $5.54 |
| 5 GB per dayTop-up available | 1 day | 5 GB | $1.49 | $7.46 |
| 1 GB totalTop-up available | 30 days | 1 GB | $7.58 | $7.58 |
| 10 GB totalTop-up availableBest value | 30 days | 10 GB | $0.96 | $9.63 |
| 10 GB per dayTop-up available | 1 day | 10 GB | $1.02 | $10.25 |
| 1 GB totalTop-up available | 365 days | 1 GB | $14.35 | $14.35 |
| 50 GB totalTop-up available | 180 days | 50 GB | $1.31 | $65.60 |
Prices shown were generated on 2026-10-08 and can change with our provider's catalogue. The app always shows the current price before you pay.
Num vs Airalo, Saily, Nomad, Simpal, Maya: Thailand eSIM prices compared →
Best Thailand eSIM by trip length
Our pick for each trip length: the cheapest plan that lasts the whole stay and carries enough data for maps, messaging and a bit of video. Heavy streamers should go a size up.
| Trip | Our pick | Validity | Total data | Price |
|---|---|---|---|---|
| A long weekend Thailand eSIM for 3 days | 3 GB total | 15 days | 3 GB | $3.48 |
| One week Thailand eSIM for 7 days | 3 GB total | 15 days | 3 GB | $3.48 |
| Two weeks Thailand eSIM for 14 days | 5 GB total | 30 days | 5 GB | $5.54 |
| A month Thailand eSIM for 30 days | 10 GB total | 30 days | 10 GB | $9.63 |
Using your eSIM in Thailand
Thailand is a heavy-data country. Ride-hailing replaces fare negotiation, island ferries are booked from a phone, menus are translated on the spot — the airport SIM counter knows this and charges a tourist premium for it. According to the plan details the eSIM connects to AIS, CAT, DTAC, True Move and TrueMove H, and the phone picks whichever is strongest where you are standing.
A mix: 13 plans list 5G, 1 are 4G only. The table above does not show speed, the app does. Coverage is strong in Bangkok, Chiang Mai and the main islands; remote areas are weaker, and a long-tail boat to a quiet beach is where you find that out. Download the map of anywhere you are staying more than a night.
Because trips here tend to be long and usage steady, the daily plans usually beat the fixed bundles. At the bottom of the table is 500 MB over 1 day for $3.28, at the top 50 GB over 180 days for $65.60. Every plan here can be topped up from the app without reinstalling anything.
Before you fly, install on wi-fi and turn data roaming on for the Num line. Turn it off for your home SIM: a home line left roaming in Thailand is an expensive mistake, and your calls and texts still arrive with it off. APN is automatic. This plan suits a two-to-four-week trip that moves between city, coast and islands.
Practical notes for Thailand
- Coverage is strong in Bangkok, Chiang Mai and the main islands; remote areas are weaker.
- Ride-hailing apps are the standard way to avoid fare negotiation — they need a live connection.
- Daily plans usually beat fixed bundles here, because trips tend to be longer and usage is steady.
How to get connected
- Download Num and pick Thailand.
- Choose a plan and pay with Apple Pay.
- Scan the QR code the app gives you — Settings → Cellular → Add eSIM.
- Turn on data roaming for the Num line when you land.
Questions about Thailand
How much does an eSIM for Thailand cost?
Plans start at $3.28. The table on this page shows current prices — 14 options ranging from short trips to month-long stays. These are the prices you pay in the app; there are no separate activation or delivery fees.
Will my phone work with a Thailand eSIM?
Most iPhones from the XR and XS onward support eSIM, and the handset must be carrier-unlocked. Check the compatibility page for the full list before you buy.
When does the plan start counting down?
Validity begins when the eSIM first connects to a network in the coverage area, not when you buy it. You can install it before you travel and it will wait until you land.
Can I keep my normal number while using it?
Yes. The Num eSIM runs alongside your existing SIM, so calls and texts on your usual number keep working while data runs over the travel plan. Turn your normal line's data roaming off to avoid a roaming bill.
Can I add more data if I run out?
Yes — reloadable plans can be topped up from inside the app without buying a new eSIM or reinstalling anything.
Is there an unlimited data eSIM for Thailand?
Num does not sell unlimited plans for Thailand. The closest are the daily-allowance plans, such as 500 MB per day, which give a fixed amount each day for the length of the trip. For most travellers the fixed bundles, from 500 MB to 50 GB, are better value.
Which networks does a Num Thailand eSIM use?
It connects to AIS, CAT, DTAC, True Move and TrueMove H and picks the strongest available network automatically. 13 of the 14 plans support 5G; the rest run on 4G/LTE.
Do I get a Thailand phone number with the eSIM?
No. Num eSIMs are data-only. Your own number stays active on your existing SIM for calls and texts, and WhatsApp, iMessage and other messaging apps keep working over the eSIM's data. If you need a local number, see our guide to eSIMs with a phone number.
What is the best eSIM for Thailand?
It depends on how long you stay and how much you use maps and video. On this page the best value per gigabyte is 10 GB total for 30 days at $9.63 ($0.96); the trip-length picks match a plan to a weekend, a week, two weeks and a month. The comparison page sets Num's prices against Airalo, Saily, Nomad, Simpal, Maya at matched plan sizes, including the sizes where we are not the cheapest.