Best Carriers in Thailand: Comparison for Travellers

eSIM from 1,00 USD · 100 MB. Networks: AIS (5G), DTAC (5G), True Move (4G), TrueMove H (5G).

Carriers in Thailand: comparison

With an eSIM you don't choose a carrier directly — the eSIM provider has agreements with one or more local networks. What matters is which network(s) your plan uses and whether it covers the areas you'll visit.

Where any carrier can drop signal

• Jungle trekking routes in Doi Inthanon and Khao Yai parks
• Boat trips between the Koh Samui island chain
• Limestone karst areas in Phang Nga Bay
• Underground temples and cave shrines

Quick checklist: stay online without surprises

The make-or-break moment is often the first 30 minutes after landing: maps, transport, messages. Install your eSIM on Wi‑Fi before you travel and switch mobile data to the eSIM when you arrive. That way you're not dependent on airport Wi‑Fi and you avoid accidental roaming charges.

For typical use (maps + messaging + light social media), 1–3 GB per week is often enough. If you tether for a laptop, take video calls, or stream daily, aim for 10 GB+ or a plan with fair-use throttling instead of a hard cut-off.

• Networks: AIS (5G), DTAC (5G), True Move (4G), TrueMove H (5G)
• Offline maps: download the area in Google Maps while you're on hotel Wi‑Fi.
• On the move: Grab, Bolt, local tuk-tuk apps + LINE, WhatsApp work well on low data — video and app updates are usually the real data drains.
• Common weak spots: Jungle trekking routes in Doi Inthanon and Khao Yai parks · Boat trips between the Koh Samui island chain
• City context: Bangkok: Excellent coverage; BTS and MRT now have 4G/5G on elevated sections. · Phuket: Resort areas well-covered; remote southern beaches thinner.

Phone setup tip: keep your primary SIM active for calls/SMS (so 2FA codes can arrive), but turn off mobile data on that line. Set the eSIM as your data line — it prevents accidental roaming on the wrong SIM and keeps WhatsApp/banking flows more predictable.

Current eSIM plans (examples)

Examples from our database — availability and pricing can change.