What do the codes in parentheses on the VoLTE phone list mean?

[DinoWPG99]

In the list of VoLTE supported phones (below), what do the codes in parentheses represent?

iOS 16 makes sense for Apple - it's the operating system version number.

But for the rest of the Android phones, those codes are not an Android version number. What do they mean and where would you go in the settings to find the number?

https://www.publicmobile.ca/en/on/get-help/articles/volte

[hTideGnow]

hi @DinoWPG99 OS version number.  Android world is not as easy understand as iOS world 

But if your phone is on the list, just update to the latest OS.   

what phone do your have??

[Phil_Adelphus]

@DinoWPG99   It's the build number.  Go to Settings - About Phone - Software info or something like that.

[Chalupa_Batman]

I would have to say Firmware or Software

Survey says........