Quick answer: The best eSIM for Thailand depends on how long you stay. For a few days, a 1 GB plan costs under $1. For a week, choose about 5 GB. For two weeks or more, choose 10 GB or a 20 GB monthly plan. All prices below come from the eSIMzee Thailand catalog, where plans start at $0.49.
Which eSIM plan should you buy for Thailand?
Match the plan to your trip length, not to the biggest number on the label. Most travelers use maps, messaging and a few photos, so a small plan goes a long way.
Here are five picks from five different providers. Each is a Thailand plan from the eSIMzee catalog.
| Provider | Plan | Data | Validity | Price (USD) | Notes |
|---|---|---|---|---|---|
| Thirr | TH 1GB 3D | 1 GB | 3 days | $0.77 | Short trip or layover; 5G and hotspot listed |
| Abest eSIM | Thailand - 7 Days/Total 5GB | 5 GB | 7 days | $3.48 | One week; 5G and hotspot listed |
| Roamify | Thailand eSIM 10 GB - 15 Days | 10 GB | 15 days | $7.50 | Two weeks; 5G and hotspot listed |
| LinkeSIM | Thailand 20 GB for 30 days | 20 GB | 30 days | $6.90 | Longest stay; 5G listed, no hotspot listed |
| iRoamly | Thailand-eSIM-Unlimited-3 Days | Unlimited (by plan name) | 3 days | $8.50 | Heavy use; 5G and hotspot listed |
Prices from the eSIMzee catalog, checked on 31 October 2026. Providers change prices often.
The catalog lists data only for these plans. None of the picks lists calls or SMS. The unlimited plan does not state a fair-use limit in the catalog, so read the provider's terms before you buy.
Which networks do Thailand eSIMs use?
Some plans name the local network they run on. For example, catalog listings from eSIM.DOG name DTAC and AIS/TrueMove H as hosts. Many plans do not name a network at all.
The catalog does not rate coverage, so we make no coverage claims here. Before you buy, check the plan page of your chosen provider for the network name. If you plan to visit islands or remote areas, that check matters most.
Do you need to register an eSIM in Thailand?
Thailand has a tourist SIM registration process for physical SIM cards. dtac tells visitors to bring a passport, the SIM card and its package, and to register at a dtac service center, a participating retailer or a dtac shop at an airport. The listed airports include Suvarnabhumi, Don Mueang, Phuket, Samui, Chiang Mai and Krabi.
That page covers physical SIM cards and does not mention eSIMs. If a provider asks for extra steps, they will say so on the plan page or in the order email. Read both before you fly.
How do you install a Thailand eSIM on your phone?
An eSIM is a digital SIM built into your phone. Think of it as a SIM card that you download instead of slotting in. Apple describes it as an industry-standard digital SIM built into the iPhone. You need an iPhone XS, XS Max, XR or later, and Wi-Fi during setup.
- Buy the plan and open the QR code the provider sends you.
- On iPhone, go to Settings, tap Cellular (or Mobile Data), then tap Add eSIM.
- Scan the QR code, or choose manual entry if the scan fails.
- Label the new line "Thailand" so you can tell it from your home line.
Not sure your phone supports eSIM? Use the eSIMzee device checker first.
Can you keep your home number while using a Thailand eSIM?
Yes, if your phone supports dual SIM. Apple says dual SIM works abroad, such as keeping your home number while using a local travel line. Only one number can use cellular data at a time, and you pick it under Settings, then Cellular, then Cellular Data.
Set the Thailand eSIM as your data line. Keep your home line for calls and texts. Apple also warns that if Data Roaming is on for the data number, the voice-only number loses Visual Voicemail and MMS, so turn roaming on only for the travel eSIM if the provider asks for it.
How much data do you need in Thailand?
Use these starting points, then adjust to your habits:
- 1 GB: a short stopover with maps and chat apps.
- 5 GB: a week of maps, messaging and some video calls.
- 10-20 GB: two weeks or more, or if you work from your phone.
- Unlimited: long days of streaming or hotspot use for a laptop.
Not sure? Try the eSIMzee data calculator. You can also compare every provider on the providers page, or browse nearby options in Asia.
Frequently asked questions
Do I need to register an eSIM in Thailand?
dtac's tourist page describes passport registration for physical SIMs and does not mention eSIMs. Check your provider's plan page for any steps it requires.
Is an eSIM better than a physical SIM at the airport?
An eSIM lets you install before you fly, with no counter queue. Choose an eSIM if your phone supports it and you want data on landing. Choose a physical SIM only if you need a local number.
Which network should my Thailand eSIM use?
Some plans name AIS, TrueMove H or DTAC as the host, and many do not name one. Check the plan page before you buy, especially if you will visit remote areas.
Does a Thailand eSIM come with a phone number?
The picks above list data only. Keep your home number on your main SIM for calls and texts, and use the eSIM for data.
Can I use my phone as a hotspot?
Many plans list hotspot support, and the table notes it for each pick. LinkeSIM's pick does not list it, so choose another plan if you need to share data.
Sources
- eSIMzee, Thailand eSIM plans, live catalog, accessed 31 October 2026.
- dtac, Register Tourist SIM Card, accessed 31 October 2026.
- Apple Support, eSIM on iPhone, accessed 31 October 2026.
- Apple Support, Dual SIM on iPhone, accessed 31 October 2026.
