Welcome to Vodafone Community
Vodafone's device guide for the Google Pixel 4a 5G says that the device has WiFi Calling capability, but I just wanted to know if that also means 4G Calling (HD Voice) is included? And, for each of those features (WiFi calling / 4G Calling) does it matter if I bought the phone from Vodafone or not?
From Vodafone wi-fi-calling it says
“ All the devices on this page will support WiFi calling when you buy them directly from us. Please note that phones bought from other UK telecom providers are unlikely to support our WiFi calling, with the exception of iPhones, which should work regardless.
Current Phone > Samsung Note 20 Ultra 5G - SM9860 Snapdragon.
Samsung One Ui 3.0 / Android 11.
For Pixel devices it doesn't matter where the device is purchased from since Google don't enable carriers to install their own firmware, the 4G/Wi-Fi calling settings are bundled in a "settings file" which is applied dependent on the current SIM/eSIM you are using. Unfortunately it is unclear to me as to whether these settings are applicable to multiple Pixel models or whether for a new model to be supported the carrier must submit settings to Google to be included in a future Android update specific to that model.