At the airport you will find “Telecommunication service”. You can buy sim card here. Office hour is 08:00~22:00. If your landing is outside this time period, don’t worry, you can buy sim card in any telecom stores in the city. You can also buy easy card here. It is used to take subway. You will get 20% off if you use it. Be sure to have it!
Recommend & things to remember
You MUST have at least 2 official picture IDs (e.g. Passport and Driver’s Licence) to purchase a pre-paid SIM. I recommend Chunghua telecom‘s 1GB for 30days plan : NTD180. All telecom company has similar rates but Chunghua’s signal is the best. You don’t need to buy unlimited plan because it is too expensive. 3 days for NTD300 & 5 days for NTD450. 1GB is quite enough for google map, facebook, and google anything you like. If it is not enough, you can charge NTD50 for 250MB. Buy a NTD300 sim card and tell them you will use Chunghua telecom‘s 1GB for 30days plan : NTD180. You will have NTD120 residue. You can use it to call or buy more MB’s for internet.