Primary: Mint Mobile (T-Mobile): eSim
Secondary: VZW (Redpocket) SIM
Apps: Mint, Google Voice
Mint has WiFi calling, so I reinserted VZW SIM, and turned off WiFi; attempting to call out with or without WiFi enabled via Secondary line only, I got the same response (see second Pic below)
With secondary only configured, I'm seeing "No Service" with or without WiFi (without a reboot).
With Pri/Sec turned on, I see "No Service" for Sec, but when iPhone is rebooted, both Pri/Sec are shown as working. Sec (VZW) has a WiFi symbol shown (first pic below) by it but WiFi is not possible with Red Pocket
Speculation, iPhone program assumes VZW service will have WiFi calling, which brings about this SNAFU. When I attempted to turn on WiFi calling for VZW (RedPocket) in settings, iPhone rejected, and indicated to call VZW.
I don't know if this is an iOS update issue, or specific to iPhone 13; I might setup iPhone 11, and if it works, send Apple back this iPhone 13 to Apple. Hello Apple, can this issue be resolved?