After recently loading /e/OS on a used Moto G7 Plus and moving my sim card from an iPhone 12 to this device everything worked great except phone calls seemed “unstable” - calls dropped unexpectedly or lacked a good connection.
Yesterday I found the APN settings page on T-Mobile shown below:
From what I recall I only edited the following APN settings: Server, APN type, APN protocol, and APN protocol. All other settings were the same as the T-Mobile document.
Dunno. I have a REVVLRY+ and didn’t notice anything strange on Q .18 or R while testing but I was only using in one location for a short time for testing.