Please tell us some basic information before asking for help:
Model Name: Zenfone 5Z - ZS620KL
Firmware Version: WW_188.8.131.52_20200320
Rooted or not: NOT rooted
Frequency of Occurrence: N/A (I do not know if a feature exists or not)
APP Name & APP Version (If your issue relates to the app): N/A
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
I would like to know if Wifi calling is possible with my Asus 5Z - I see in internet the generic set up steps for Android phones but I miss in my 5Z the WiFi calling menu - does it exist and, if yes, how do I reach it?