Hi MERQR Thank you for your asking. To avoid any misunderstanding, kindly tell me what you mean of "Wi-Fi Calling" is (1)using Wi-Fi to call (e,g. Skype, Whatsapp..) or (2) using VoWiFi?
You can activate wifi calling in max pro m1 Condition: If your telecom is providing wifi calling Like in india Jio mobile is providing free service of wifi calling
How to enable wifi calling: *Open call log *From right top (3dots) Select option settings *Choose calling account *Choose your sim/operator *Choose wifi calling option *Enable it.
Now enjoy free wifi calling In those area where network connectivity is low you may enable it to gain good voice quality and connectivity call over wifi
