Mobile data in Thailand is some of the cheapest and fastest in Southeast Asia — and Phuket's coverage is solid across most of the island. Whether you're arriving for the first time, looking for a long-term plan as a resident, or just trying to avoid a surprise roaming bill, this guide covers your options honestly.
eSIM adoption has changed things significantly. You can now activate a Thai number before you even land at Phuket Airport, and long-term residents can run a Thai eSIM alongside a home-country number on dual-SIM devices. Here's what actually works.
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eSIM vs Physical SIM in Phuket: What Should You Get?
The choice between eSIM and physical SIM comes down to your situation:
- First-time visitor or short stay (under 30 days): International eSIM providers like Airalo, Holafly or Nomad are the most convenient — buy before you travel, activate on landing, no airport queue. Price premium over Thai carriers is modest for short stays.
- Long-term resident or regular visitor: A Thai carrier eSIM (AIS, DTAC, or True Move H) gives you better monthly pricing and more local plan flexibility. Requires passport registration at a carrier store or airport counter.
- Using a dual-SIM phone: Run a Thai eSIM for data and local calls alongside your home-country SIM — ideal for expats who need both a Thai number and their home number active.
Not all phones support eSIM, and some carrier-locked phones (particularly older iPhones sold in certain markets) may not support Thai carrier eSIMs. Check Settings → General → About → Available SIM (iPhone) or Settings → Network (Android) to confirm eSIM support before arriving.
Thai Carrier eSIMs: AIS, DTAC, True Move H
All three major Thai carriers support eSIM on compatible devices. Here's the honest comparison for Phuket specifically.
AIS (Advanced Info Service)
AIS is consistently rated the best network for overall coverage in Phuket, particularly in the south of the island (Rawai, Nai Harn, Chalong) where signals from competing networks can be patchier. Their 4G speeds are reliable and 5G is available in central Patong, Phuket Town and around the Bang Tao–Laguna area.
Monthly packages for long-term residents typically run ฿299–฿599 per month for unlimited data (with fair-use throttling above a daily threshold of around 1–2GB at full speed). Tourist packages are available from the AIS airport counter or stores in Central Festival and Central Phuket malls.
To activate an AIS eSIM: visit any AIS store or the airport counter with your passport. They'll scan your device and send a QR code for eSIM provisioning. The process takes 15–20 minutes.
True Move H
True Move H (part of CP Group) consistently offers the best value on data-heavy packages. Their unlimited data plans often include higher daily full-speed allowances than AIS at similar price points, making them popular with remote workers and streamers.
Coverage in Phuket is strong in tourist and urban areas but can be slightly weaker in some rural inland areas compared to AIS. For most expats living in the main residential areas (Bang Tao, Rawai, Kamala, Chalong, Phuket Town), True Move H is perfectly adequate.
International eSIM providers like Airalo often use True Move H's network for Thailand — so if you've had good experiences with an Airalo Thailand eSIM, you're effectively on True Move H.
DTAC (now merged with True Move H)
DTAC and True Move H completed their merger in 2023 and are progressively integrating networks under the "NTPLC" combined entity, with True Move H as the main consumer brand going forward. New long-term residents are better served by choosing True Move H or AIS rather than DTAC, which is being phased into the True Move H brand. Existing DTAC customers will be migrated to True Move H plans over time.
International eSIM Providers for Phuket
For visitors and new arrivals who want the convenience of activating connectivity before landing, international eSIM marketplaces are excellent options.
| Provider | Network Used | Typical Price (7 days) | Typical Price (30 days) | Best For |
|---|---|---|---|---|
| Airalo | True Move H / AIS | ~$8–$12 (5GB) | ~$15–$25 (15–20GB) | Short visits, convenience |
| Holafly | True Move H | ~$12–$19 (unlimited*) | ~$29–$45 (unlimited*) | Heavy data users, simplicity |
| Nomad | AIS / True Move H | ~$9–$14 (5–10GB) | ~$18–$28 (20GB) | Value + reliability |
| AIS Tourist SIM (direct) | AIS | ฿299 (8 days, 15GB) | ฿499 (30 days, 30GB) | Best price, airport/store |
*"Unlimited" from Holafly typically means high-speed data with no cap on lower speeds after threshold. Prices approximate and subject to change — check providers directly.
If you're staying more than 2 weeks, buying directly from an AIS or True Move H store in Phuket (Central Festival, Central Phuket, or airport) is almost always cheaper than international eSIM providers. The queue at Central Festival's AIS counter is usually short and staff speak good English.
Coverage in Phuket: Area by Area
Phuket is a small island (about 50km north to south) so coverage is generally good everywhere people live. That said, there are nuances worth knowing.
| Area | AIS Coverage | True Move H Coverage | Notes |
|---|---|---|---|
| Patong | Excellent (5G) | Excellent (5G) | Best coverage on island |
| Phuket Town | Excellent (5G) | Excellent (5G) | Fast urban coverage |
| Bang Tao / Laguna | Excellent | Good | AIS slightly stronger west coast |
| Rawai / Nai Harn | Excellent | Good | AIS preferred in far south |
| Chalong | Excellent | Excellent | Good connectivity throughout |
| Kamala / Surin | Good | Good | 4G solid, some 5G gaps |
| Kata / Karon | Excellent | Good | Reliable tourist areas |
| Interior / hills | Variable | Variable | Weaker behind hills/mangroves |
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How to Activate an eSIM from a Thai Carrier
- Check device compatibility — confirm your phone supports eSIM (Settings → General → About → Available SIM on iPhone; Settings → Network → SIM management on Android).
- Visit a carrier store or airport counter — bring your passport. AIS and True Move H counters are in Phuket Airport arrivals and at both Central Festival and Central Phuket malls.
- Choose your plan — tourist packages are pre-packaged (7, 15 or 30 days). Monthly plans require registration with a Thai address (your rental property address works) and may need a Non-B or long-term visa for some plans.
- Receive QR code — the store will generate an eSIM QR code. You'll scan this in your phone's Settings → Mobile Data → Add eSIM.
- Activate and test — activation usually completes within 5 minutes. Test data connectivity and note the number for future top-ups.
- Top-up or renew — AIS and True Move H apps (available in English) allow self-service top-ups and plan renewals. You can also top-up at 7-Eleven counters across Phuket using top-up cards.
Data Speeds: What to Actually Expect in Phuket
Phuket's mobile networks are fast by Southeast Asian standards. In practice, you can expect:
- 4G LTE in populated areas: 20–80 Mbps download, 10–30 Mbps upload. More than sufficient for video calls, streaming 4K, and remote work.
- 5G in Patong, Phuket Town, Bang Tao: 100–300+ Mbps download on good signal. Most expat tasks don't need this but it's there.
- After fair-use threshold (unlimited plans): Speed drops to 1–5 Mbps. Browsing, messaging and audio calls still work fine; video streaming becomes choppy.
For remote workers in particular: mobile data in Phuket is a reliable backup to home WiFi, and AIS or True Move H unlimited plans at ฿299–฿599/month are cheap enough that many expats use them as a primary connection alongside home broadband. See our guide on cost of living in Phuket for more on utility and connectivity costs.
Long-Term Residents: Monthly Plan Options
AIS Monthly Packages (approximate, subject to change)
True Move H Monthly Packages (approximate, subject to change)
Prices as of early 2026. Both carriers run promotions regularly — check their apps or in-store for current deals. Last updated: April 2026.
eSIM for Calls and Thai Phone Number
An eSIM from a Thai carrier gives you a Thai phone number (beginning 06x, 08x, or 09x). This is useful for:
- Opening a Thai bank account (most require a Thai mobile number for OTP verification)
- Registering for Thai apps and services
- Receiving calls from Thai contacts (Thai numbers calling internationally is expensive)
- Visa-related communications (immigration offices may call or SMS Thai numbers)
For banking, AIS and True Move H numbers are equally accepted. See our Thai bank account for foreigners guide for how the number verification process works with Kasikorn, Bangkok Bank and SCB.
Thai SIM and eSIM numbers expire if you don't use them for 180 days (carrier varies). If you leave Phuket for a long period, make a small top-up or a single call/SMS to keep the number alive. Losing a Thai number that's linked to your bank OTP or Line account is a genuine hassle to recover from.
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