Ten days is enough to go well beyond Taipei, to the east coast and a central or southern city, so data swings between mountain days, long train days and city days.
Quick answer
| Level of use | Roughly per day | Total for 10 days |
|---|---|---|
| Light: maps, chat, email | 0.4GB | 5GB |
| Normal: social, photos, short video | 0.9GB | 11GB |
| Heavy: streaming, video calls, hotspot | 1.9GB | 22GB |
Daily use times the days, plus 15 percent for app updates and photo backup. An estimate, not a measurement of your phone.
Ten days turns the trip from a single base into a route. A common one is three nights in Taipei, the eastern line to Hualien for two nights to see Taroko Gorge, then back west or south to Taichung and Sun Moon Lake, and two or three nights in Tainan or Kaohsiung before high-speed rail back to Taoyuan for the flight.
The eastern line to Hualien has express trains whose tickets often sell out around holidays, so book ahead, and you will want data or a saved image to show the ticket when boarding.
For ten days the estimates are about 5 GB light, 11 GB normal and 22 GB heavy. The key point is that we have no fixed plan valid exactly 10 days: the 7-day packs fall short by three days, and the 15-day pack is only 3 GB, below even the light estimate, so you turn to 30-day packs or daily plans.
In Hualien city and main visitor spots it generally works, but in some stretches of the deep gorge the signal may be weak or absent, which is down to terrain rather than the eSIM. Download offline maps and save tickets beforehand.
It depends on behaviour. If you use lodging Wi-Fi a lot and moderate data outside, 10 GB is near the 11 GB normal estimate and sufficient. If you stream, film long videos or work on your phone, step up to 20 GB. The remaining validity of the pack is not a problem on a short trip.
Mountain and forest areas can have mist and patchy signal, so download offline maps, save forest-railway or bus tickets as images, and keep a little spare data in the plan, since those days are often early starts and late returns without lodging Wi-Fi.
Porsch Kunnipat Siramanakul
Instagram and TikTok have no web share button, so we open your phone's share sheet or copy the link instead.
Prices are for the whole 10-day trip: a daily plan is its day price times 10. Only plans that last the trip and clear the light-use estimate.
| Plan | Data | Validity | Cost for 10 days |
|---|---|---|---|
| Taiwan +13 countries 1GB per day | 1GB/day | Set to 10 days | $19.00 |
| Taiwan +13 countries 2GB per day | 2GB/day | Set to 10 days | $39.00 |
| Taiwan +13 countries 3GB per day | 3GB/day | Set to 10 days | $59.00 |
| Taiwan +13 countries 5GB per day | 5GB/day | Set to 10 days | $69.00 |
| Taiwan +11 countries 1GB per day | 1GB/day | Set to 10 days | $69.00 |
| Taiwan +116 countries 1GB per day | 1GB/day | Set to 10 days | $89.00 |
| Taiwan +13 countries 10GB per day | 10GB/day | Set to 10 days | $119.00 |
| Taiwan +11 countries 2GB per day | 2GB/day | Set to 10 days | $119.00 |
| Taiwan +116 countries 2GB per day | 2GB/day | Set to 10 days | $139.00 |
| Taiwan +11 countries 3GB per day | 3GB/day | Set to 10 days | $159.00 |
14 countries · partner networks
Taiwan, Japan, Hong Kong, South Korea, Vietnam, Bangladesh, Cambodia, India, Indonesia, Laos, Macau, Malaysia, Philippines, Thailand
Validity starts on first connection at the destination
14 countries · partner networks
Taiwan, Japan, Hong Kong, South Korea, Vietnam, Bangladesh, Cambodia, India, Indonesia, Laos, Macau, Malaysia, Philippines, Thailand
Validity starts on first connection at the destination
14 countries · partner networks
Taiwan, Japan, Hong Kong, South Korea, Vietnam, Bangladesh, Cambodia, India, Indonesia, Laos, Macau, Malaysia, Philippines, Thailand
Validity starts on first connection at the destination
14 countries · partner networks
Taiwan, Japan, Hong Kong, South Korea, Vietnam, Bangladesh, Cambodia, India, Indonesia, Laos, Macau, Malaysia, Philippines, Thailand
Validity starts on first connection at the destination
12 countries · partner networks
Taiwan, Japan, China, Hong Kong, Singapore, South Korea, Vietnam, Cambodia, Indonesia, Macau, Malaysia, Thailand
Validity starts on first connection at the destination
117 countries · partner networks
Taiwan, Japan, Australia, China, Hong Kong, Singapore, South Korea, United Kingdom, United States, Albania, Argentina, Armenia, Austria, Azerbaijan, Belgium, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Bulgaria, Cameroon, Canada, Central African Republic, Chad, Chile, Colombia, Costa Rica, Croatia, Cyprus, Czechia, Denmark, DR Congo, Ecuador, Egypt, El Salvador, Estonia, Eswatini, Finland, France, Gabon, Germany, Ghana, Gibraltar, Greece, Guam, Guatemala, Guinea-Bissau, Honduras, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, Ivory Coast, Jordan, Kazakhstan, Kenya, Kosovo, Kuwait, Kyrgyzstan, Latvia, Liberia, Liechtenstein, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Mali, Malta, Mauritius, Mexico, Moldova, Montenegro, Morocco, Netherlands, New Zealand, Nicaragua, Niger, Nigeria, North Macedonia, Norway, Oman, Pakistan, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Puerto Rico, Qatar, Republic of the Congo, Romania, Saudi Arabia, Senegal, Serbia, Seychelles, Slovakia, Slovenia, South Africa, Spain, Sri Lanka, Sweden, Switzerland, Tanzania, Thailand, Tunisia, Turkey, Uganda, Ukraine, United Arab Emirates, Uruguay, Uzbekistan, Zambia
Validity starts on first connection at the destination
