Here are the Top 5 cheapest unlimited SIM card options in Thailand (2026) โ based on real current plans, pricing, and what actually works for foreigners living or traveling in Bangkok/Isaan.
Iโll break down:
- Price (real monthly cost)
- Speed (VERY important in Thailand)
- Features (calls, apps, etc.)
- Where to buy (exact places)
TOP 5 CHEAPEST UNLIMITED SIM CARDS (2026)
๐ฅ 1. DTAC โGo Unlimitedโ (Cheapest True Unlimited)
Provider: DTAC
๐ฐ Price: ~299โ399 THB/month
๐ถ Speed: 4โ10 Mbps (speed capped)
๐ก Type: True unlimited data
โญ Features:
- Unlimited internet (no data cap)
- Enough speed for YouTube, maps, LINE
- Some plans include free social apps
๐ Where to buy:
- 7-Eleven
- DTAC Shop
- Shopee / Lazada
๐ Best overall CHEAPEST unlimited plan in Thailand
๐ฅ 2. TrueMove H Unlimited (Best Value + Speed)
Provider: TrueMove H
๐ฐ Price: ~300โ699 THB/month
๐ถ Speed: 6โ15 Mbps
โญ Features:
- Faster than DTAC at similar price
- Free calls included (some plans)
- Strong city coverage
๐ Where to buy:
- True Shop
- 7-Eleven
๐ Best balance of price + performance
๐ฅ 3. AIS Unlimited 10 Mbps (Best Reliability)
Provider: AIS
๐ฐ Price: ~450โ500 THB/month
๐ถ Speed: Stable 10 Mbps
โญ Features:
- Strongest nationwide coverage
- Works best in rural areas (Isaan)
- Reliable connection
๐ Where to buy:
- AIS Shop
- Shopping malls (Central, Terminal 21)
๐ Best for living outside Bangkok
๐ 4. True โGod SIMโ (Cheapest long-term hack)
Provider: TrueMove H
๐ฐ Price: ~2,000โ4,000 THB/year
๐ (~170โ330 THB/month equivalent)
๐ถ Speed: 6โ15 Mbps
โญ Features:
- Prepaid annual SIM
- Unlimited data
- Often includes free calls
๐ Where to buy:
- Lazada / Shopee
- True stores (limited availability)
๐ Cheapest long-term unlimited option in Thailand
๐ 5. Full-Speed Unlimited 5G Plans (No speed cap)
Providers: AIS / TrueMove H
๐ฐ Price: ~899โ1,299 THB/month
๐ถ Speed: MAX 5G (no limit)
โญ Features:
- True unlimited (no throttling)
- Best for:
- Streaming HD/4K
- Gaming
- Hotspot use
๐ Where to buy:
- Official carrier shops
- Malls
๐ Only option if you want real unlimited full speed
๐ SIM CARD COMPARISON (2026)
| Plan | Price | Speed | True Unlimited | Best For |
|---|---|---|---|---|
| DTAC Go Unlimited | 299โ399 | 4โ10 Mbps | โ | Cheapest |
| TrueMove Unlimited | 300โ699 | 6โ15 Mbps | โ | Best value |
| AIS 10 Mbps | ~482 | 10 Mbps | โ | Rural reliability |
| True God SIM | ~170โ330/mo | 6โ15 Mbps | โ | Long-term cheapest |
| Full Speed 5G | 899โ1299 | Max speed | โ | Heavy users |
โ ๏ธ VERY IMPORTANT (Most People Get This Wrong)
โUnlimitedโ in Thailand = 3 types:
- โ Cheap unlimited โ speed capped (MOST COMMON)
- โ ๏ธ Hybrid โ high-speed limit, then slow
- ๐ฐ True unlimited โ expensive
๐ Most people should choose speed-limited unlimited (6โ15 Mbps)
Itโs fast enough for:
- YouTube
- Google Maps
- Video calls
๐ Where to Buy SIM Cards (Best Places)
Cheapest:
- 7-Eleven (everywhere)
Best service/help:
- AIS Shop
- True Shop
- DTAC Shop
๐ก SIM cost: ~49โ99 THB
๐ง Insider Tips (2026)
- โ Avoid airport SIMs โ 2โ3x more expensive
- โ Buy cheap SIM + activate plan in app
- Apps to use:
- MyAIS
- True iService
- DTAC app
- ๐ถ If youโre in Isaan:
๐ Choose AIS (better coverage)
๐ FINAL RECOMMENDATION
๐ Best cheap overall: DTAC 299 THB plan
๐ Best balance: TrueMove 6โ15 Mbps
๐ Best rural use: AIS
๐ Best long-term: True God SIM





