I just updated to OneUI 3.1 yesterday on my Galaxy A71 4G. Immediately after that wifi calling and VoLTE no longer work. (They both worked perfectly just before the update.) The settings are still available and they indicate that both are turned on but the reality is that they are not working. The swipe down screen now simply says "T-Mobile* instead of "Wifi Calling T-Mobile" like it previously did. Also, when in airplane mode, turning wifi back on only, I am not able to place a call thru the phone app. I can place a call thru Google Voice app which uses Wifi Calling. This proves wifi calling is not actually working thru the phone app. I also just noticed that calls force the phone back to 4G {with no wifi on}, indicating VoLTE is also not working as it used to (and the settings option for VoLTE shows it is on). - Please help and Samsung, please fix this! Thank you. ... View more