Hi @Avenger54321! Sorry for the delayed response. Support is available from 6:00 a.m. to 9:00 p.m. CST on weekends. Just to confirm: Did you try to turn up the volume of the call? We ask this because the volume switch for the speaker phone is different from the one for regular calls.
Oh, I see, @Avenger54321! Just to confirm, can you please check if your phone is connected to an alternate Bluetooth device? Like headphones? Please try turning your Bluetooth OFF, then restart the phone and make another phone call.