Thailand eSIM with Calls & Phone Number
Thailand eSIM from 18,95€ with unlimited data on DTAC 5G and a local Thai number (+66) for incoming calls and SMS. Outgoing calls and texts are barred by the operator. Instant QR delivery, no contract.
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50GB high-speed, then throttled to 1 Mbps.
Your Selection
Your plan only starts counting when the eSIM first connects at your destination — so you can buy today and travel in three weeks.
How does Simbye eSIM work for Thailand?
Get connected in under 2 minutes
Order before you fly
Pick the length, pay, and the eSIM arrives by email. Set it up calmly at home on Wi-Fi: tap the link or scan the QR code and you are done. The line then sits dormant on your phone and the clock has not started yet.
Switch it on in Thailand
After landing at Bangkok Suvarnabhumi or Don Mueang, in Phuket, Chiang Mai, Krabi, Koh Samui, U-Tapao near Pattaya or Hat Yai, simply turn off airplane mode. Your phone registers with TrueMove H or DTAC by itself. Just check that data roaming is switched on for the eSIM.
Go online
Turn on data roaming for the eSIM and you are connected. The line also carries a Thai +66 number that can receive calls and texts, which matters for confirmation codes from local apps and for callbacks from your hotel. Outgoing calls and texts are barred by the operator, so the number is for receiving only. The clock starts with your first connection in Thailand, not at purchase.
Check Device Compatibility
Make sure your device supports eSIM before purchasing
Which networks will you be on in Thailand?
Your Thailand eSIM runs on TrueMove H and DTAC, both part of True Corporation since the merger.
The Simbye eSIM uses 2 networks in Thailand: TrueMove H · DTAC.
Source: nPerf averages, 01.01.2025 – 31.12.2025.
You do not pick a network. The moment you land in Thailand and switch off airplane mode, your phone finds the strongest signal from TrueMove H or DTAC on its own, and it switches between them as you travel. There is nothing to enter by hand. Two things matter: data roaming has to be on for the eSIM, and the eSIM has to be selected as your mobile data line, so your phone stops using your card from home.
You are connected in the arrivals halls of Suvarnabhumi and Don Mueang already, and at Phuket airport too. In Bangkok, Chiang Mai, Phuket, Pattaya, Hua Hin, Krabi and Hat Yai you get 4G almost everywhere and 5G across large parts of the cities. On the bigger islands – Koh Samui, Koh Phangan, Koh Chang, Koh Lanta – coverage is solid in the towns, on the beaches and at the piers, but it thins out inland and in the hills. On very small islands such as Koh Tao or Koh Lipe, in Khao Sok National Park and on the mountain roads around Pai and Mae Hong Son you should expect dead spots, and on the ferries between the mainland and the islands the signal drops out for stretches. Download your maps, tickets and the address of your accommodation before you set off.
eSIM or a local SIM card in Thailand?
Thailand is the clearest case: since August 2025 a shop card means your passport plus a live photo in the shop, while the eSIM arrives by email with its own +66 number for incoming calls and texts, and works the minute you land at Suvarnabhumi.
Why your home contract gets expensive in Thailand
Whatever country you fly in from, the moment your phone registers on a Thai network your provider bills you at its international rate, and what that rate is sits in the small print. Either a day pass charged for every day of your trip that usually contains a thin data allowance, or, if you book nothing, a per-megabyte price that turns a single navigation session into the most expensive journey of the holiday. Prepaid is the opposite of that: paid once up front, nothing can follow later, and there is no contract and no registration involved.
There is a second point most people only notice at the airport. In Thailand daily life runs through apps, not through the reception desk. The driver calls you, the restaurant sends its menu over LINE, the boat transfer is confirmed by QR code, and at the market stall you hold up your phone to a code instead of cash. Rationing your data out of fear of the bill does not save money, it leaves you standing in Bangkok at night with no taxi. A line of your own with a Thai number takes that off your mind.
Where TrueMove H and DTAC actually reach
Since True and dtac merged, TrueMove H and DTAC are one network on shared towers. In Bangkok and east towards Pattaya, in Chiang Mai, Phuket, Krabi, Hua Hin and Hat Yai, 5G is the norm and 4G the fallback. On the big islands too – Koh Samui, Koh Phangan, Koh Chang, Koh Lanta – you are reliably online in the towns, on the beaches and at the piers, and across greater Bangkok including Suvarnabhumi and Don Mueang without question.
It thins out as soon as you leave the coast. In Khao Sok National Park, on the mountain roads of the Mae Hong Son loop around Pai, inland on the islands and on small islands such as Koh Tao or Koh Lipe there are spots with no signal at all. On the ferries between Surat Thani and the islands the connection drops for stretches, and the same happens on the train towards Isaan and on long bus routes through the north. Download offline maps, tickets and the address of your accommodation beforehand. In Thailand that is not a workaround, it is normal preparation, and it applies to any SIM from any provider.
How much data do you need in Thailand?
So you can work it out instead of guessing: how much an hour costs in the apps you actually use on holiday.
Just staying reachable
1–3 GB
Messages, the map now and then, checking mail. Everything else runs on the hotel Wi-Fi.
An ordinary holiday
5–10 GB
Navigating, social media, uploading photos, a few videos in the evening.
Out a lot, or a laptop along
20 GB and up
Streaming in the evening, video calls home, keeping a laptop or tablet online through your phone.
Data used per hour
The Netflix and Spotify figures come from the providers themselves (Netflix Help Center, Spotify Support, retrieved 28 Aug 2026). The rest are network-operator estimates (o2, Vodafone, EE) and vary with picture quality and reception.
What does an eSIM for Thailand cost?
Simbye offers 3 plans for Thailand from €18,95 to €47,95 — prepaid, no contract.
Validity runs from 7 to 30 days and starts with your first connection in Thailand.
from €18,95
3 plans · 7–30 days
- Unlimited €18,95 7 days €2,70 per travel day
- Unlimited €32,95 15 days €2,19 per travel day
- Unlimited €47,95 30 days €1,59 per travel day
Good to know
- Networks
- TrueMove H + DTAC
- Setting it up
- A link in your email, or the QR code — one tap is enough
- Network technology
- 4G/LTE — and 5G where the network already offers it
- APN and settings
- Nothing to set. The eSIM brings everything with it
- Hotspot
- Allowed — for a laptop, tablet or a travel companion
- Calls and texts
- Incoming only — outgoing calls and SMS are barred by the operator
- Number's dialling code
- +66 (Thailand)
- Your own number
- Stays in the phone and stays reachable
- Contract
- None. The plan ends by itself
- Worth knowing
- Roaming on your home contract gets billed here — this eSIM is prepaid, so nothing is added afterwards
Frequently Asked Questions about Thailand eSIM with Calls & Phone Number
Data, calls, real phone numbers, top-ups and setup — everything you need to know before you buy a Simbye eSIM.
