score:3
Looks like there is a service iTaiwan Wi-Fi which aims to provide 1Mbps (mirror), which is more than enough for video calling, but as ckx mentioned, relying on it could be iffy. But yes, theoretically, it's feasible.
The airport itself, according to a collection of airport speed tests (mirror):
TPE airport - located in Taiwan - offers totally free wifi to passenger. The passenger just connects to a wifi network called “Airport Free WiFi” and the internet becomes available right away.
Here is the result of “Airport Free WiFi” speed test:
Local Internet Speed (within Taiwan) Download: 17.90 Mbps Upload: 16.91 Mbps Ping: 22 ms Server Location: Taoyuan, Taiwan Tested Date: 9/23/2017 International Internet Speed Download: 8.83 Mbps Upload: 14.10 Mbps Ping: 104 ms Server Location: Bangkok, Thailand Tested Date: 9/23/2017
also, plenty fast.
Upvote:2
In general, relying on a single service for something important is very likely to end up in tears. What if it has an outage...? What if a jerk decides to watch Netflix on the same AP you are on? I would rather pick up a SIM card from eBay before leaving -- even just as a backup.