Internet in Thailand: eSIM, Carriers & Travel Guide
eSIM from 1,00 USD · 100 MB. Networks: AIS (5G), DTAC (5G), True Move (4G), TrueMove H (5G).
Current eSIM Plans (examples)
Carriers & Coverage in Thailand
AIS
Best for: Best overall coverage nationwide
- Dominant network; best in islands and northern mountains
- Good choice for Chiang Mai and remote treks
TrueMove H
Best for: Urban 5G speeds
- Strong 5G in Bangkok; competitive pricing
- Good in Phuket and Pattaya beach resorts
DTAC
Best for: Value and roaming
- Being merged with TrueMove; network good in cities
- Useful for short urban stays
Known Weak Signal Areas
- 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
Coverage by City
- Bangkok — Excellent coverage; BTS and MRT now have 4G/5G on elevated sections.
- Phuket — Resort areas well-covered; remote southern beaches thinner.
- Chiang Mai — Good 4G in old city; villages on mountain roads need offline maps.
- Pattaya — Beach resort; solid coverage on Walking Street and coastal road.
- Koh Samui — Good coverage; ferry to Koh Phangan loses mid-crossing.
- Krabi — Main town good; longtail to islands can lose signal.
Useful Apps in Thailand
- Ride-hailing: Grab, Bolt, local tuk-tuk apps
- Maps: Google Maps
- Messaging: LINE, WhatsApp
Everything About Internet in Thailand
Cities
Internet in Bangkok
Internet in Phuket
Internet in Chiang Mai
Internet in Pattaya
Internet in Koh Samui
Internet in Krabi
Internet in Hua Hin
Internet in Chiang Rai
Getting There
Carriers
Coverage
Prices & Plans
Data Prices
Roaming vs SIM vs eSIM
7 / 15 / 30-Day Plans
Unlimited Data & Fair Use
How Much Data Do I Need?
Practical
Uber, Maps & Taxis
How to Activate an eSIM
No Signal / APN Troubleshooting
SIM Scams & Where to Buy Safely
WhatsApp, 2FA & Banking