[elelegido]

That's your problem right there. If you connect your iPhone to your car's USB socket, the Uber app will not sound.

 

[elelegido]

Elelegido, nothing is plugged in. I was trying to use the phone without any connections whatsoever. Should I have turned off Bluetooth? -- I did forget to do that.
>>Brent

Sorry, I was replying to the OP.

The only thing I can think of is to make sure that the phone ringer volume is not muted.

 

[elelegido]

Are there any ways around this (settings)? I have the same issue (no ping sounds) when my car is running. Thanks

Yes, don't plug your phone into your car's USB.

Buy a cigarette lighter socket charger to charge your phone and connect audio via Bluetooth or aux cable.