Best Prepaid Data Plans in Taiwan

Taiwan offers a wide range of prepaid data plans that cater to tourists, short-term visitors, and residents who prefer flexibility over contracts. With four major carriers—Chunghwa Telecom, Taiwan Mobile, Far EasTone, and T Star (formerly Taiwan Star, now part of Far EasTone but still offering separate prepaid options)—the market is competitive. This article breaks down the best prepaid data plans in Taiwan based on coverage, speed, price, and value. Whether you need a 7-day tourist SIM or a 30-day data-heavy plan, we’ve got you covered.

1. Overview of Taiwan’s Prepaid Market

Taiwan’s telecom landscape is dominated by three major players: Chunghwa Telecom (CHT), Taiwan Mobile (TWM), and Far EasTone (FET). A fourth operator, T Star (originally Taiwan Star), was acquired by Far EasTone in 2023, but its prepaid brand still operates under the T Star name as of 2025. All carriers offer prepaid SIM cards that can be purchased at airports, convenience stores (7-Eleven, FamilyMart), and official retail shops. Plans range from 1-day to 365-day validity, with data allowances from 1GB to unlimited. Prices vary from NT$100 to NT$1,200. For a detailed buying guide, see our Prepaid SIM Card Taiwan Buying Guide.

2. Chunghwa Telecom Prepaid Data Plans

Chunghwa Telecom is the largest carrier in Taiwan, offering the widest 4G and 5G coverage, especially in rural areas and mountainous regions. Its prepaid data plans are reliable and come in various options.

2.1 Chunghwa 4G Prepaid Data Plans

Chunghwa’s 4G prepaid data plans are available in 1-day, 3-day, 5-day, 7-day, 15-day, and 30-day packages. Popular options include:

• 7-Day Unlimited Data: NT$499 – Includes unlimited 4G data at reduced speeds after 20GB (typically 5Mbps). Ideal for tourists.
• 30-Day 20GB: NT$599 – 20GB of full-speed 4G data, then throttled to 1Mbps.
• 30-Day Unlimited Data: NT$899 – Unlimited 4G data with a soft cap of 100GB; after that, speeds may be reduced during peak times.

Chunghwa also offers top-up data packs: 1GB for NT$180 (30-day validity) or 5GB for NT$300 (60-day validity).

2.2 Chunghwa 5G Prepaid Plans

Chunghwa launched 5G prepaid in 2024. Plans include:

• 7-Day 5G 20GB: NT$599 – 20GB of 5G speed, then 4G at reduced speeds.
• 30-Day 5G 50GB: NT$999 – 50GB of 5G data, then 4G at 10Mbps.

5G coverage is mainly in Taipei, Taichung, Kaohsiung, and other major cities. Rural 5G coverage is limited. For a comparison of 5G speeds, check our 5G Speed Test Taiwan article.

3. Taiwan Mobile Prepaid Data Plans

Taiwan Mobile offers competitive prepaid plans with strong urban coverage and good customer service. Its prepaid brand is known as “TWM Prepaid” or “FET Prepaid” after the merger? No, Taiwan Mobile remains independent.

3.1 Taiwan Mobile 4G Prepaid Plans

Taiwan Mobile’s 4G prepaid plans are similar to Chunghwa’s but often slightly cheaper:

• 7-Day Unlimited Data: NT$450 – Unlimited 4G with a fair usage policy (after 20GB, speeds drop to 5Mbps).
• 30-Day 20GB: NT$550 – 20GB full speed, then 1Mbps.
• 30-Day Unlimited Data: NT$799 – Unlimited with a 100GB soft cap.

Taiwan Mobile also offers “Data Pass” top-ups: 1GB for NT$150, 5GB for NT$250.

3.2 Taiwan Mobile 5G Prepaid Plans

Taiwan Mobile’s 5G prepaid plans are available at select stores:

• 7-Day 5G 15GB: NT$499 – 15GB 5G speed, then 4G.
• 30-Day 5G 50GB: NT$899 – 50GB 5G, then 4G at 10Mbps.

Taiwan Mobile’s 5G coverage is good in Taipei and New Taipei, but lags behind Chunghwa in rural areas.

4. Far EasTone Prepaid Data Plans

Far EasTone (FET) is the second-largest carrier, known for competitive pricing and good urban coverage. Its prepaid brand is called “FET Prepaid.”

4.1 Far EasTone 4G Prepaid Plans

FET’s 4G prepaid plans are budget-friendly:

• 7-Day Unlimited Data: NT$400 – Unlimited 4G with a 15GB fair usage cap (then 3Mbps).
• 30-Day 20GB: NT$500 – 20GB full speed, then 1Mbps.
• 30-Day Unlimited Data: NT$750 – Unlimited with a 80GB soft cap.

FET also offers a 15-day 10GB plan for NT$350, popular among mid-stay visitors.

4.2 Far EasTone 5G Prepaid Plans

FET’s 5G prepaid options are limited but growing:

• 7-Day 5G 10GB: NT$399 – 10GB 5G, then 4G.
• 30-Day 5G 30GB: NT$799 – 30GB 5G, then 4G at 5Mbps.

For a comparison between Far EasTone and T Star (which FET now owns), see our FarEasTone vs T Star Comparison.

5. T Star Prepaid Data Plans (Now under Far EasTone)

T Star (formerly Taiwan Star) was acquired by Far EasTone in 2023. Its prepaid brand still operates separately, offering the cheapest plans in Taiwan, but with limited 4G coverage (mainly urban areas) and no 5G prepaid as of 2025.

• 7-Day Unlimited Data: NT$299 – Unlimited 4G with a 10GB fair usage cap (then 1Mbps).
• 30-Day Unlimited Data: NT$599 – Unlimited with a 50GB soft cap.
• 30-Day 20GB: NT$399 – 20GB full speed, then 128kbps.

T Star’s coverage is poor outside cities. It’s a good budget option if you stay in Taipei or Kaohsiung city centers. For more details, read our Prepaid SIM Card Taiwan Buying Guide.

6. Comparison of Best Prepaid Data Plans

To help you choose, here’s a comparison of the most popular prepaid data plans for short-term visitors (7-day) and longer stays (30-day). Prices are in New Taiwan Dollars (NT$).

6.1 Best 7-Day Prepaid Data Plans

For most tourists, Taiwan Mobile’s NT$450 plan offers the best balance of price and speed. If you need maximum coverage, Chunghwa is the safest bet.

6.2 Best 30-Day Prepaid Data Plans

If you need more than 20GB, Chunghwa’s 30-Day Unlimited (NT$899) is the most reliable, while T Star’s Unlimited (NT$599) is the cheapest but with limited coverage.

7. How to Choose the Right Prepaid Plan

Consider these factors when selecting a prepaid data plan in Taiwan:

• Coverage: Chunghwa has the best nationwide coverage, especially in mountains and rural areas. Taiwan Mobile and Far EasTone are strong in cities. T Star is only suitable for urban centers.
• Speed: 5G plans offer faster speeds but are only available in select cities. For most users, 4G is sufficient. See our Best 5G Plans Taiwan 2025 for more details.
• Validity: Tourist plans typically last 7-15 days. If you stay longer, a 30-day plan is more cost-effective. Top-up options are available for extending validity.
• Price: T Star is the cheapest, but you get what you pay for. Far EasTone offers good value for urban users. Taiwan Mobile and Chunghwa are premium choices.
• Ease of Purchase: All carriers sell SIMs at Taoyuan Airport terminals 1 and 2, as well as at convenience stores. For a step-by-step guide, read our Prepaid SIM Card Taiwan Buying Guide.

8. Tips for Using Prepaid Data in Taiwan

• Activation: Most prepaid SIMs require registration with your passport or ARC (Alien Resident Certificate). Keep your passport handy when purchasing.
• Top-Up: You can top up data or credit at convenience stores (7-Eleven, FamilyMart) using the kiosk or at carrier stores. Online top-up is also available via carrier apps.
• Dual SIM: If your phone supports dual SIM, you can keep your home SIM for calls and use the Taiwan prepaid SIM for data.
• APN Settings: Most SIMs automatically configure APN. If not, manually set APN to “internet” for all carriers.
• Unused Data: Some carriers allow data rollover if you top up before expiry. Check with the carrier.

For a comprehensive overview of all mobile options, including postpaid, see The Complete Guide to Choosing the Best Mobile Plan in Taiwan.

Conclusion

Taiwan’s prepaid data market offers excellent flexibility for visitors and residents alike. Chunghwa Telecom remains the top choice for coverage and reliability, while Taiwan Mobile and Far EasTone provide competitive pricing. T Star is a budget option for city dwellers. For most tourists, a 7-day unlimited plan from Taiwan Mobile (NT$450) or Far EasTone (NT$400) offers the best value. For longer stays, consider a 30-day 20GB plan from Far EasTone (NT$500) or Chunghwa (NT$599). Always check coverage in your specific areas before purchasing.

Related Articles

• Prepaid SIM Card Taiwan Buying Guide
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• FarEasTone vs T Star Comparison
• 5G Speed Test Taiwan
• The Complete Guide to Choosing the Best Mobile Plan in Taiwan