AIS vs True vs Dtac – Which is Best for Long-Stay in Thailand?

AIS, TrueMove H, or Dtac — which mobile provider is best for long-term stays in Thailand? This 2025 guide compares coverage, data plans, SIM types, and expat-friendliness.

📱 Why Choosing the Right Mobile Provider Matters

For expats living in Thailand — or digital nomads staying longer than a few weeks — having a reliable mobile networkwith good coverage, stable internet, and fair pricing can make or break your daily experience.

Thailand has 3 major mobile providers:

• AIS

• TrueMove H

• Dtac

While all offer prepaid and postpaid plans, they differ in signal strength, pricing, speed, and service in rural vs. urban areas.

🧭 Coverage & Reliability

🟢 AIS (Advanced Info Service)

• Widest nationwide coverage

• Best for expats traveling between cities or remote areas

• Great for long-stay retirees outside Bangkok

🔴 TrueMove H

• Strong coverage in Bangkok, Chiang Mai, Phuket

• Offers good fiber bundles (mobile + home internet)

• Popular with younger expats and digital nomads

🔵 Dtac

• Improving network in 2025 but weaker in rural provinces

• Good value for money

• Less reliable for remote work or rural areas

💰 Pricing & Data Plans (Prepaid & Monthly)

✅ AIS Plans (2025)

• Prepaid: ฿299/month = 10GB + unlimited social media

• Postpaid: ฿699/month = Unlimited 5G, free calls to AIS

• Long-stay bundle: ฿2,700/6 months (unlimited 10Mbps)

✅ TrueMove H Plans

• Prepaid: ฿200 = 15-day unlimited 4Mbps

• Postpaid: ฿599/month = Unlimited 4G/5G + TruePoints

• Tourist eSIM: ฿499 = 30GB + 100 Baht call credit

✅ Dtac Plans

• Prepaid: ฿150 = 30-day 5GB + bonus calls

• Postpaid: ฿499/month = Unlimited 10Mbps

• Often includes social data (LINE, Facebook) free

🛫 Airport SIM Availability

All three providers have booths at:

• Suvarnabhumi (BKK)

• Don Mueang (DMK)

• Phuket International Airport

• Chiang Mai Airport

Tourist SIMs are easy to get, but long-stay expats should consider switching to monthly postpaid plans after 2–3 months.

🏠 SIM + Home Internet Bundles

• True offers bundles: Mobile + Home Fiber (฿999/month)

• AIS has packages for condo renters (via AIS Fibre)

• Dtac still focuses more on mobile-only

There’s no one-size-fits-all answer, but here’s a quick guide:

• Choose AIS if you want reliable signal anywhere and top-tier service.

• Choose TrueMove H if you want bundles, promotions, and city speed.

• Choose Dtac if you want value plans for casual use.

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