SIM Cards & eSIM Guide for Thailand (2026)

Staying connected in Thailand is easy, cheap, and flexible if you know what to get. This guide covers physical SIM cards, eSIM options, local carrier plans, best choices for different trips, and practical tips you’ll use before and after landing.

Overview: SIM vs eSIM

Physical SIM card

• A traditional SIM card you put into your phone.

• Includes a Thai phone number.

• Good for voice/SMS and data.

• Must register with your passport at a store or kiosk.

eSIM

• A digital SIM you install with a QR code.

• No physical card swap.

• Usually data‑only unless offered by some carriers.

• Can be bought before travel or in Thailand.

• Works well if your phone supports eSIM (most newer iPhones and Androids do).

Which to choose?

• Short trips / data only: eSIM often cheaper and faster to set up.

• Long stays / need Thai number for messengers, banking, OTPs: physical SIM or local eSIM with number is better.

Thailand Mobile Networks

Thailand has three major mobile networks:

Network	Coverage	Notes
AIS	Best nationwide, rural & island areas	Widest reach; strong 4G/5G for travel.
True Corporation (True + dtac)	Strong in cities & popular spots	Good 5G in Bangkok & Phuket.
DTAC (now under True)	Budget plans, good city coverage	Often seen in eSIM bundles; decent performance.

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Tourist eSIM Providers & Plans (2026)

Below are common travel eSIM options and pricing.

Popular eSIM Providers

Saily

• Plans from ~$2.99 for 1 GB (7 days).

• Good overall choice for budget travelers.

Airalo

• Flexible plan sizes on local networks (AIS/True).

• Reliable for short stays; subscription varies.

Maya Mobile

• Supports hotspot/tethering.

• “Unlimited” plans are often daily capped.

Sim Local

• Excellent per‑GB pricing (e.g., ~50 GB/10 days ~ $13).

Holafly & others

• Unlimited data options with flexible durations.

• Often pricier, but good for heavy streaming.

Typical Tourist eSIM Plans (Examples)

(Prices vary by vendor and currency exchange.)

Plan	Data	Validity	Approx Price
Basic	1 GB	7 days	~$2–$5
Medium	5 GB	30 days	~$5–$10
Large	10 GB	30 days	~$9–$15
Heavy	20–50 GB	30–180 days	~$15–$60
Unlimited	Daily or total	1–30 days	~$20–$60

👉 These connect via AIS/True/DTAC networks, typically 4G/5G.

Local Carrier Tourist SIM Plans

You can also buy a local SIM at airports, convenience stores (7‑Eleven, FamilyMart), carrier shops, or online.

AIS Tourist eSIM / SIM

• 25 GB / 8 days ~ 399 THB (~$11.50).

• 35 GB / 15 days ~ 599 THB (~$17).

• 50 GB / 30 days ~ 899 THB (~$26).

• Unlimited (FUP) 30 days ~ 1699 THB (~$49).

dtac Tourist eSIM / SIM

• 50 GB / 10 days ~ 349 THB (~$10).

• 30 GB / 15 days ~ 599 THB (~$17).

• Unlimited 8–30 days ~ 449–1199 THB (~$12–$34).

TrueMove H Tourist Plans

• Unlimited & volume plans available at various durations.

• True eSIM can be set up online or in stores.

Local prepaid plans often include voice minutes + data and sometimes unlimited access to social apps.

Activation & Setup

Physical SIM

• Bring your passport to the counter.

• Staff will activate and register your SIM.

eSIM

• Buy online (vendor app or carrier page).

• Scan the QR code on your device.

• Go to Settings → Cellular → Add eSIM.

• Follow the prompts to install.

Pros & Cons: eSIM vs Physical SIM

eSIM

• Quick setup; no need to visit a counter.

• Great for data‑only use.

• Cheapest for short trips.

• Some limited provider support and compatibility issues reported.

Physical SIM

• Includes Thai phone number.

• Better choice for calls, SMS, OTPs.

• Cheaper on long trips.

Practical Tips

• Dual SIM phones make it easier — keep your home SIM for calls while using Thai eSIM data.

• If you need a local phone number for verification codes, go physical SIM or a local eSIM with phone service.

• Airport kiosks are convenient but often more expensive than city shops.

• Coverage is best with AIS if you plan to visit islands or rural areas.

Common Traveller Notes

• Some travellers report that eSIMs purchased overseas may need activation in Thailand or require local verification.

• Experience with coverage can vary by location (some say AIS works best outside major cities).

• For heavy use (streaming/upload), pick a plan with larger GB or “unlimited” data.

@copyright Asean Now 2026

Don't take the one through a ticket provider like Expedia or Agoda. Not extendable as the expiry date is firm and you cannot add data. I bought a dtac one and thankfully the dtac guy at the desk at the airport gave me a real esim for free when he couldn't top it up.