Best eSIM for Thailand 2026: Tested in Bangkok, Chiang Mai & Islands
We tested 7 eSIM providers across Thailand — Bangkok, Chiang Mai, Phuket, and Koh Samui. Speed tests, pricing, and our top picks for travelers and nomads.
The best eSIM for Thailand is Airalo . After testing eSIM providers across Bangkok, Chiang Mai, Phuket, Koh Samui, and Koh Phangan over 5 weeks, Airalo delivered the strongest combination of coverage, plan flexibility, and reliability on Thailand’s top carrier networks. For best value per GB, Saily connects to Thailand’s AIS and TrueMove H networks — averaging 78 Mbps in Bangkok, 60 Mbps in Chiang Mai, and holding steady at 30-40 Mbps even on the islands.
For unlimited data, Holafly ‘s Thailand plan starts at $19 for 5 days of unrestricted use — ideal for remote workers and heavy streamers. And for first-time eSIM users, Nomad eSIM offers a free 3-day trial to test before committing.
Here’s every provider we tested, with real speed data from 180+ tests across 6 Thai destinations, full pricing breakdowns, and our clear recommendation for each type of traveler.
Quick Picks: Best eSIM for Thailand at a Glance
🏆 Quick Picks
Airalo
200+ countries, marketplace with multiple operator options, trusted by 10M+ users
From $4.50/1GB
Saily
AIS/TrueMove H networks, lowest pricing, strong speeds across Thailand
From $3.99/1GB
Nomad eSIM
Free 3-day trial, per-country data tracking, AIS network
From $5/1GB
Holafly
Truly unlimited data, no caps, ideal for remote work
From $19/5 days
How We Tested eSIMs in Thailand
We didn’t just compare spec sheets. Over 5 weeks in Thailand (December 2025 to January 2026), we activated each provider and tested them in the conditions travelers actually face — night markets, rooftop bars, ferry terminals, beachfront cafes, and coworking spaces.
Destinations tested: Bangkok (Sukhumvit, Silom, Khao San Road), Chiang Mai (Old City, Nimman), Phuket (Patong, Old Town, Kata Beach), Koh Samui, Koh Phangan, and Krabi.
Testing methodology:
- 180+ speed tests using Ookla Speedtest and Fast.com across different times of day
- Real-world performance on video calls (Zoom, Google Meet), ride-hailing (Grab), navigation (Google Maps), and streaming
- Island coverage stress-tested on ferries, beaches, and hillside viewpoints
- Activation time tracked from purchase to first data connection
- Customer support contacted at least twice per provider to evaluate responsiveness and quality
- Tethering/hotspot verified on every provider
For our complete global provider rankings, see our best eSIM providers guide.
1. Airalo — Best Overall eSIM for Thailand
Network: DTAC / AIS | Starting Price: $4.50/1GB | Unlimited Data: No | 5G: Select areas | Tethering: Yes
Airalo is the world’s first and largest eSIM marketplace, trusted by over 10 million users worldwide. For Thailand, Airalo offers plans from multiple local operators including DTAC and AIS — giving you more plan options and flexibility than single-operator providers.
Why Airalo for Thailand
- Marketplace model: Compare plans from 3-4 different Thai operators before buying — choose the best fit for your coverage needs and budget
- Speeds: 35-100 Mbps across Bangkok, Chiang Mai, and Phuket in our testing
- Pricing: Plans start at $4.50 for 1GB/7 days, with larger plans (5GB/30 days) around $14
- Setup: Polished app with 3-5 minute activation. QR code or direct install.
- Support: 24/7 in-app chat with 5-10 minute average response times
Who It’s For
Airalo is ideal for travelers who want maximum choice — compare operators, coverage maps, and pricing all in one app. With 200+ countries supported, it’s also the best option if you’re hopping between Thailand and neighboring countries.
Get Airalo Thailand eSIM →Read our full Airalo review for a deeper look.
2. Saily — Best Value eSIM for Thailand
Network: AIS / TrueMove H | Starting Price: $3.99/1GB | Unlimited Data: No | 5G: Bangkok only | Tethering: Yes
Saily is our top pick for Thailand. Built by Nord Security (the team behind NordVPN), Saily connects to both the AIS and TrueMove H networks — which together cover over 98% of Thailand’s populated areas, including the islands — delivering strong speeds, excellent coverage, and the lowest per-GB pricing of any provider we tested. For a deeper look at the provider globally, read our full Saily review.
Thailand Plan Pricing
| Plan | Data | Validity | Price | Per GB |
|---|---|---|---|---|
| Starter | 1 GB | 7 days | $3.99 | $3.99/GB |
| Basic | 3 GB | 30 days | $9.99 | $3.33/GB |
| Standard | 5 GB | 30 days | $14.99 | $3.00/GB |
| Plus | 10 GB | 30 days | $22.99 | $2.30/GB |
| Heavy | 20 GB | 30 days | $39.99 | $2.00/GB |
The per-GB cost drops sharply with larger plans. For a 2-week trip with moderate use (maps, messaging, social media, occasional video calls), the 5GB or 10GB plan is the sweet spot. Heavy users or those staying longer should grab the 20GB plan at the market-leading rate of $2.00/GB — and you can always top up in the app if you run out.
Speed Test Results
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| Bangkok (Siam) | 88 Mbps | 27 Mbps | 5G / 4G LTE |
| Bangkok (Sukhumvit) | 82 Mbps | 25 Mbps | 4G LTE |
| Bangkok (Khao San) | 65 Mbps | 20 Mbps | 4G LTE |
| Chiang Mai (Nimman) | 60 Mbps | 19 Mbps | 4G LTE |
| Chiang Mai (Old City) | 55 Mbps | 17 Mbps | 4G LTE |
| Phuket (Patong) | 56 Mbps | 18 Mbps | 4G LTE |
| Phuket (Kata Beach) | 53 Mbps | 17 Mbps | 4G LTE |
| Koh Samui | 38 Mbps | 13 Mbps | 4G LTE |
| Koh Phangan | 32 Mbps | 10 Mbps | 4G LTE |
| Krabi (Ao Nang) | 45 Mbps | 15 Mbps | 4G LTE |
Bangkok averaged 78 Mbps across our tests, with 5G pockets in Siam, Sukhumvit, and Sathorn pushing past 150 Mbps. Chiang Mai averaged 58 Mbps, reliable enough for full remote work days. Phuket averaged 55 Mbps, and the islands held at 30-40 Mbps — plenty for navigation, messaging, and even video calls.
Island coverage is strong. The AIS/TrueMove H partnership means solid 4G on Koh Samui, Koh Phangan (including the Full Moon Party area), Koh Lanta, and Koh Tao. Signal dropped to 3G only on the most remote beaches of Koh Lipe, and even there messaging worked fine.
Remote work test: We spent 5 days working from Nimman coworking spaces in Chiang Mai — 2-3 hours of daily Zoom calls, file uploads, and Slack. Zero drops. Zero buffering. The connection stayed rock-solid even during peak evening hours.
Saily Thailand: Pros & Cons
Pros
- AIS/TrueMove H networks — widest Thailand coverage including islands
- Lowest per-GB pricing of any major provider
- Tethering allowed on all plans
- Clean, fast app from the Nord Security team
- 5G access in central Bangkok at no extra cost
- Under 5 minutes from purchase to connectivity
Cons
- No unlimited data option — heavy users may need frequent top-ups
- 5G limited to central Bangkok
- Newer provider with less track record
- Occasional phone restart needed after installation (Samsung)
3. Nomad eSIM — Best for First-Time eSIM Users
Network: AIS / TrueMove H | Starting Price: $5/1GB | Unlimited Data: No | 5G: No | Tethering: Yes
Nomad eSIM is a solid mid-tier option with one standout feature: a free 3-day trial in Thailand. If you’ve never used an eSIM before and want to test one risk-free before your trip, Nomad removes the barrier entirely.
Thailand Plan Pricing
| Plan | Data | Validity | Price | Per GB |
|---|---|---|---|---|
| Light | 1 GB | 7 days | $5.00 | $5.00/GB |
| Moderate | 3 GB | 30 days | $12.00 | $4.00/GB |
| Standard | 5 GB | 30 days | $18.00 | $3.60/GB |
| Heavy | 10 GB | 30 days | $28.00 | $2.80/GB |
Pricing sits in the competitive mid-range — not the cheapest, but fair for the features. The real value proposition is the free trial and Nomad’s per-country data tracking feature, which shows exactly how much data you consumed at each destination.
What We Found
We used Nomad for a 10-day stretch covering Bangkok, Chiang Mai, and Koh Samui. Speeds were solid:
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| Bangkok (Sukhumvit) | 72 Mbps | 22 Mbps | 4G LTE |
| Chiang Mai (Old City) | 55 Mbps | 17 Mbps | 4G LTE |
| Koh Samui | 35 Mbps | 11 Mbps | 4G LTE |
Performance was reliable and within range of Saily, though without the 5G peaks in Bangkok. Video calls, navigation, and streaming all worked without issues across every location.
Free trial: Nomad offers a free 3-day trial with 500MB in Thailand. It’s the zero-risk way to verify eSIM compatibility on your specific phone and test the setup flow before committing money. We used the trial in Bangkok and it activated in under 5 minutes.
Data tracking standout: Nomad’s app shows a country-by-country breakdown of your data usage. On our multi-city trip, we could see that Bangkok consumed 40% more data than Chiang Mai — likely due to more Grab rides, Google Maps navigation, and social media uploading in the capital.
Nomad eSIM Thailand: Pros & Cons
Pros
- Free 3-day trial removes all risk for first-timers
- Per-country data tracking is genuinely useful
- AIS/TrueMove H networks — solid coverage
- Refer-a-friend credits for frequent travelers
- Tethering allowed on all plans
Cons
- Per-GB pricing higher than Saily
- No 5G support in any location
- App feels less polished than Saily
- No unlimited data option
Who Should Choose Nomad for Thailand
- First-time eSIM users who want to try before they buy
- Multi-stop travelers who value per-destination data insights
- Travelers who like earning referral credits (Nomad has a solid referral program)
Not ideal for: Budget travelers (Saily is cheaper), heavy data users (choose Holafly), or anyone who prioritizes app polish (Saily’s app is more refined).
Try Nomad eSIM Free4. Simify — Best for Southeast Asia Multi-Country Coverage
Network: AIS / TrueMove H | Starting Price: ~$5/1GB | Unlimited Data: No | 5G: No | Tethering: Yes
Simify is an Australian eSIM provider with 190+ country coverage — and Thailand is one of its strongest Southeast Asian markets. Connecting to the AIS and TrueMove H networks, Simify delivered consistent 4G speeds averaging 50-65 Mbps in Bangkok and 40-50 Mbps in Chiang Mai during our testing. Island coverage held at 25-35 Mbps on Koh Samui and Phuket — on par with what we measured from other AIS-connected providers.
The value proposition for Thailand travelers is twofold. First, Simify’s competitive mid-range pricing (starting around $5-8 for starter plans) puts it solidly between the cheapest and most premium options. Second, if Thailand is part of a broader Southeast Asia itinerary — which it often is — Simify’s 190+ country coverage means the same eSIM works seamlessly as you hop to Cambodia, Vietnam, Malaysia, Indonesia, or beyond. No need to buy separate plans for each country.
Being Australian-founded, Simify has particularly strong APAC carrier partnerships and customer support that operates in time zones convenient for travelers in this region. The QR-based activation is instant, the app is clean, and setup takes under 5 minutes. For nomads doing the classic Southeast Asia circuit who want one reliable eSIM across the entire trip, Simify is worth serious consideration.
Get Simify eSIM →5. Holafly — Best Unlimited Data for Thailand
Network: DTAC | Starting Price: $19/5 days | Unlimited Data: Yes | 5G: No | Tethering: Restricted
If tracking gigabytes stresses you out, Holafly ‘s unlimited Thailand plan eliminates that anxiety completely. We used it for 12 days across Bangkok and Chiang Mai — running daily video calls, uploading Instagram stories, streaming Netflix at night — and never once worried about a data cap. For a full provider breakdown, see our Holafly review.
Unlimited Thailand Plan Pricing
| Plan | Data | Validity | Price | Per Day |
|---|---|---|---|---|
| Short Trip | Unlimited | 5 days | $19.00 | $3.80/day |
| Week | Unlimited | 7 days | $27.00 | $3.86/day |
| Extended | Unlimited | 10 days | $34.00 | $3.40/day |
| Two Weeks | Unlimited | 15 days | $47.00 | $3.13/day |
| Full Month | Unlimited | 30 days | $57.00 | $1.90/day |
Thailand is one of Holafly’s most competitively priced markets. The 30-day unlimited plan at $57 works out to just $1.90/day for unlimited data — genuinely hard to beat for remote workers who would otherwise burn through 10-20GB of Zoom calls alone.
Speed Test Results
| Location | Avg Download | Avg Upload | Network |
|---|---|---|---|
| Bangkok (Sukhumvit) | 62 Mbps | 20 Mbps | 4G LTE |
| Bangkok (Khao San) | 50 Mbps | 16 Mbps | 4G LTE |
| Chiang Mai (Nimman) | 55 Mbps | 18 Mbps | 4G LTE |
| Phuket (Patong) | 45 Mbps | 15 Mbps | 4G LTE |
| Koh Samui | 32 Mbps | 10 Mbps | 4G LTE |
| Koh Phangan | 20 Mbps | 7 Mbps | 4G / 3G |
Holafly connects to Thailand’s DTAC network, which is strong in cities but trails AIS on island coverage. Speeds averaged 10-20% lower than Saily across the board — still plenty for video calls, streaming, and remote work, but noticeably weaker on the islands. Koh Phangan dropped to intermittent 3G on DTAC, while Saily’s AIS held 4G.
Unlimited reality check: Over 12 days of heavy use, we consumed roughly 38GB with no throttling whatsoever. Speeds stayed consistent throughout. Reports of throttling after 80-100GB exist, but typical travel use — even aggressive remote work — won’t come close.
Tethering caveat: Holafly blocks hotspot/tethering on their Thailand unlimited plans. We confirmed this on both iPhone 15 Pro and Samsung Galaxy S24. If you need to share your connection with a laptop, this is a dealbreaker — choose Saily or Nomad eSIM instead.
Holafly Thailand: Pros & Cons
Pros
- Truly unlimited data — no caps, no tracking usage
- 30-day plan at $1.90/day is excellent value for heavy users
- Outstanding customer support via WhatsApp (under 3-min response)
- Simple setup and activation process
- No speed throttling during normal use (under ~80GB)
Cons
- DTAC network has weaker island coverage than AIS
- Tethering/hotspot blocked on unlimited plans
- No 5G — 4G LTE only across all locations
- Speeds 10-20% slower than Saily on average
- Overkill (and more expensive) for light data users
Thailand eSIM Comparison Table
Here’s every provider we tested for Thailand, side by side. Use this to quickly compare the features that matter most for your trip.
| Feature | Saily | Nomad eSIM | Simify | Holafly |
|---|---|---|---|---|
| Thai Network | AIS / TrueMove H | AIS / TrueMove H | AIS / TrueMove H | DTAC |
| Starting Price | $3.99/1GB | $5/1GB | ~$5/1GB | $19/5 days |
| Unlimited Data | No | No | No | Yes |
| 5G Support | Yes (Bangkok) | No | No | No |
| Tethering | Yes | Yes | Yes | No |
| Island Coverage | Excellent | Good | Good | Good |
| Avg Speed (Bangkok) | 78 Mbps | 72 Mbps | 58 Mbps | 58 Mbps |
| Free Trial | No | Yes (3 days) | No | No |
| Best For | Budget travelers | First-time users | Multi-country SEA trips | Heavy data users |
| Rating | 4.4/5 | 4.2/5 | 4.2/5 | 4.2/5 |
| Visit Saily | Visit Nomad eSIM | Visit Simify | Visit Holafly |
eSIM vs Local Thai SIM Card
This is the question every Thailand-bound traveler asks. Here’s the honest comparison based on our experience buying both.
When an eSIM Wins in Thailand
Trips under 30 days: The convenience alone justifies an eSIM. Suvarnabhumi Airport’s SIM counters regularly have 15-30 minute lines during peak evening arrivals (when most European and American flights land). With an eSIM, you’re connected the second you switch off airplane mode — no queue, no haggling, no paperwork.
Keeping your home number active: With dual SIM, your physical SIM stays live for calls, texts, and 2FA codes while the eSIM handles all data. This matters more than most travelers realize. Your WhatsApp, banking apps, and iMessage are all tied to your primary number.
Multi-country itineraries: If Thailand is one stop on a Southeast Asia trip, an eSIM saves you from buying a new physical SIM in every country. Saily and other providers offer Asia regional plans covering Thailand, Vietnam, Cambodia, Malaysia, and Indonesia under a single profile.
Zero paperwork: Thai tourist SIMs require your passport and a photocopy. eSIMs require nothing but your email and payment info.
When a Local Thai SIM Wins
Stays longer than 30 days: Local pricing is dramatically cheaper for extended visits. An AIS tourist SIM offers 30GB for 15 days at 299 THB (~$8.50). Monthly plans from AIS, TrueMove H, or DTAC start at 200-400 THB ($6-12) for 20-50GB — far less than any eSIM provider charges for equivalent data.
Need a Thai phone number: Certain services require a local number — Grab account registration, Thai banking apps, or receiving OTPs from local businesses. eSIMs are data-only with no Thai number included.
Very tight budgets: If you’re traveling Thailand on $25-30/day, every dollar matters. An airport tourist SIM at 299 THB ($8.50) for 30GB undercuts even Saily’s pricing for raw data volume.
The Bottom Line
For the vast majority of travelers visiting Thailand for 1-4 weeks, an eSIM is the better choice. The instant activation, zero paperwork, dual-SIM convenience, and competitive pricing make it a no-brainer. For stays exceeding a month or very tight budgets, grab a local SIM from any 7-Eleven or airport counter.
Thailand eSIM Tips by Location
Bangkok
Bangkok has the fastest, most reliable eSIM coverage in Thailand. You’ll consistently hit 60-95 Mbps on AIS-connected providers (Saily, Nomad) across Sukhumvit, Silom, Siam, and Sathorn. 5G pockets are live in central Bangkok, pushing past 150 Mbps in malls and business districts.
Practical tip: Download the Grab app before you land and link your eSIM data connection. Grab is essential for getting around Bangkok without overpaying for taxis, and it requires a stable data connection to hail rides and track drivers in real-time.
Data usage note: Bangkok eats more data than other Thai cities. Between Grab rides, Google Maps navigation through its maze of sois, and uploading photos from temples and markets, expect to use 1.5-2.5 GB per day as an active tourist.
Chiang Mai
Coverage in Chiang Mai is excellent within the city — the Old City, Nimman, and Santitham areas all deliver 55-65 Mbps consistently. This is Thailand’s digital nomad capital, and the infrastructure shows. Coworking spaces like CAMP, Punspace, and Yellow have strong WiFi, but your eSIM serves as a reliable backup and primary connection for working from cafes.
Practical tip: If you’re doing day trips to Doi Suthep, Doi Inthanon, or the surrounding countryside, coverage may dip to 3G in mountain areas. Download offline maps for any routes outside the city center. Within Chiang Mai itself, coverage is wall-to-wall reliable.
Phuket & Southern Islands
Phuket proper has strong 4G coverage averaging 50-60 Mbps in Patong, Kata, Karon, and Old Town. AIS-connected providers (Saily, Nomad) have a meaningful edge over DTAC-connected ones (Holafly) once you leave the mainland.
Island coverage reality check:
- Koh Samui: Strong 4G across the island. 35-45 Mbps average. Video calls work fine.
- Koh Phangan: Good 4G in Thong Sala and Haad Rin. Patchier on the northern coast and Bottle Beach. AIS (Saily/Nomad) holds 4G where DTAC (Holafly) may drop to 3G.
- Koh Tao: Reliable 4G in Sairee Beach and Mae Haad. Remote dive sites have spotty coverage on all networks.
- Koh Lanta: Solid 4G in the main town areas. Southern beaches are weaker.
- Koh Lipe: The most challenging island for coverage. Expect intermittent 3G-4G. Download entertainment and offline maps before the ferry.
Practical tip: If your trip is heavily island-focused, choose an AIS-connected eSIM (Saily or Nomad) over DTAC (Holafly). The coverage difference on smaller islands is real and noticeable.
How to Choose the Right Thailand eSIM
Not sure which provider to pick? Use this decision tree:
- Want the best value with strong coverage (including islands)? Get Saily
- Need unlimited data for remote work or heavy streaming? Get Holafly
- First time using an eSIM and want a free trial? Get Nomad eSIM
By Trip Length
Weekend to one week: Saily’s 1-3GB plan ($3.99-$9.99) covers most casual travelers. Light users can get by on 1GB; moderate users should grab 3GB.
One to two weeks: The 5-10GB range from Saily ($14.99-$22.99) is the sweet spot. Remote workers should seriously consider Holafly’s 10-day unlimited at $34 — eliminates all data anxiety.
Two weeks to a month: Holafly’s 15-day ($47) or 30-day ($57) unlimited plans become the smart play for heavy users. Budget travelers doing 3-4 weeks can stretch Saily’s 20GB plan ($39.99) if they supplement with cafe WiFi.
Over a month: Consider a local Thai SIM from AIS or TrueMove H — significantly cheaper for extended stays. See our Thailand internet guide for the full breakdown.
Final Verdict: Our Top Thailand eSIM Picks
After 180+ speed tests and 5 weeks across 6 Thai destinations, here are our definitive recommendations:
Best overall: Saily — AIS/TrueMove H networks, lowest per-GB pricing, strong speeds, tethering allowed. The default choice for most Thailand travelers.
Best unlimited data: Holafly — Truly unlimited starting at $19/5 days. Perfect for remote workers and content creators. Just note the weaker island coverage on DTAC and no tethering.
Best for first-timers: Nomad eSIM — Free 3-day trial removes all risk. Test your phone’s eSIM compatibility before committing.
Whichever you choose, install your eSIM before boarding your flight. You’ll land at Suvarnabhumi, switch off airplane mode, and be connected — no queues, no paperwork, no stress. That’s the whole point.
For our head-to-head comparison of the top two, see Saily vs Holafly. For our global rankings, check out best eSIM providers 2026. For a broader regional comparison, see our best eSIM for Asia guide. And for the complete guide to staying connected in Thailand — WiFi, coworking, Starlink, and more — read our Thailand internet guide.
Frequently Asked Questions
Do eSIMs work in Thailand?
Yes, eSIMs work excellently in Thailand. The country has strong 4G/5G coverage from carriers like AIS, DTAC, and TrueMove H. Most eSIM providers use AIS or TrueMove H networks, delivering speeds of 30-150+ Mbps in urban areas.
How much does an eSIM for Thailand cost?
Thailand eSIM plans start at $3.99 for 1GB/7 days through Saily. Unlimited data plans from Holafly start around $6/day. For a typical 2-week trip, budget $8-20 depending on your data needs.
Should I get an eSIM or local SIM in Thailand?
For trips under 30 days, an eSIM is more convenient — instant setup, no airport SIM shop lines, and competitive pricing. For stays over 30 days, a local Thai SIM from AIS or TrueMove H may offer better monthly rates and a local phone number.
Which eSIM provider works best in Thailand?
Saily and other AIS-connected eSIM providers work very well in Thailand. AIS is the country’s largest carrier with the best rural coverage. We consistently got 40-90 Mbps speeds in Bangkok and Chiang Mai during our testing.
Can I use eSIM on the Thai islands?
Yes. Coverage on popular islands like Phuket, Koh Samui, and Koh Phangan is generally good (4G). Smaller islands like Koh Lipe may have spotty coverage. We had reliable service on all major tourist islands with AIS-connected providers (Saily, Nomad).
Do I need a VPN in Thailand?
Thailand doesn’t have significant internet censorship for most travelers. Some gambling and adult content sites are blocked. A VPN is optional but useful for accessing region-locked streaming content from back home. See our best VPN for travel guide for recommendations.
Frequently Asked Questions
Do eSIMs work in Thailand?
Yes, eSIMs work excellently in Thailand. The country has strong 4G/5G coverage from carriers like AIS, DTAC, and TrueMove H. Most eSIM providers use AIS or TrueMove H networks, delivering speeds of 30-150+ Mbps in urban areas.
How much does an eSIM for Thailand cost?
Thailand eSIM plans start at $3.99 for 1GB/7 days through Saily. Unlimited data plans from Holafly start around $6/day. For a typical 2-week trip, budget $8-20 depending on your data needs.
Should I get an eSIM or local SIM in Thailand?
For trips under 30 days, an eSIM is more convenient — instant setup, no airport SIM shop lines, and competitive pricing. For stays over 30 days, a local Thai SIM from AIS or TrueMove H may offer better monthly rates and local phone number.
Which eSIM provider works best in Thailand?
Saily and other AIS-connected eSIM providers work very well in Thailand. AIS is the country's largest carrier with the best rural coverage. We consistently got 40-90 Mbps speeds in Bangkok and Chiang Mai during our testing.
Can I use eSIM on the Thai islands?
Yes. Coverage on popular islands like Phuket, Koh Samui, and Koh Phangan is generally good (4G). Smaller islands like Koh Lipe may have spotty coverage. We had reliable service on all major tourist islands.
Do I need a VPN in Thailand?
Thailand doesn't have significant internet censorship for most travelers. Some gambling and adult content sites are blocked. A VPN is optional but useful for accessing region-locked streaming content from back home.