If you are experiencing choppy voice while using the Bria Mobile APP outside of a Wifi environment, then please make the following setting change within the Settings are of the APP.
1. If you have a choice between joining a 5G or 2.4G network, then please chose the 2.4G network. Though technically slower, the 2.4G network will have more consistent data flow since a 2.4G network has a larger coverage area and penetrates walls better than 5G.
2. Go to Settings/Advance Settings/Audio Codec Selections/Mobile Audio Codecs.
Please make the following codec selections for both WiFi and Mobile connections. After dragging and checking the codec selections, your screens should look like this: