Step 1: Open the WLAN settings on your phone

Step 2: Searching for WiFi hotspots with SSID as Airport-FREE-WIFI-NEW and choose it

Step 3: After connecting, the browser's verification page will automatically pop up,There are three verification methods:

SMS verification code: Your phone must have international roaming enabled

number picker machine by Self service: you should find the machine in advance

passport scan: easy and fast,  recommended 

AIRPORT-FREE-WIFI-NEW

scan the passport