What does this LTE notification mean? (Samsung A15)

[vladhed]

I ask because I'd never noticed it until yesterday, when I tried to join a zoom meeting - and it failed to join?!  Teams and Google Meeting worked, and even zoom call.  When I went on WiFi I was able to join a zoom meeting.  

I moved my SIM card back to my old Moto G10 and was able to join zoom meetings from there, so it's something very specific to the Samsung

[meself]

My guess is 4g lte

[vladhed]

Normally it's LTE with up and down arrows underneath.  This "leaf" shape is new and only shows up when trying to join a zoom meeting.

Is there some kind of firewall?  Zoom meeting uses the follow ports

• TCP: 443
• UDP: 3478, 3479, and 8801 - 8810

[meself]

The leaf means its using VoLTE

[vladhed]

Don't think so, since when I disable VoLTE I get 3G in a leaf.

[meself]

3g is been turned off by all 3 carriers i believe AI Overview

In the United States, the major cellular providers shut down their 3G networks in 2022: AT&T by February 22, 2022; T-Mobile (including Sprint's former network) by July 1, 2022; and Verizon by December 31, 2022. These shutdowns affect older phones, tablets, smartwatches, and other connected devices that rely on 3G for service. 

[vladhed]

Hi meself,

Yes, same here in Canada.  Anyhow, I'm not making the connection between Zoom failing to join a meeting and my phone going into VoLTE mode.