There was a bit of confusion as to how the day calculation goes whether it is by 2400 day or by the hour we start. I bought 2 SIM cards which I started using at different points in time but the expiry was the same per the SMS sent to me. Other than that, it is fantastic as after every call made, there is a report on how much credit I had left. A reminder came as well on the 2nd last day to top up in view of impending expiry.
They have finished 7 days sim when I arrived, and they offered me 10 days sim without extra charge! Excellent! But you will need to show extra ID apart from passport.
Very fast and reliable internet. Does not required any set up. Simply put SIM card into your phone and it connect immediately. Very smooth collection process, you can easily find at arrival hall at Taoyuan international airport. Cheaper price and avoid queue at other telecomunication store. Can connect to internet immediately arrive at airport.