The FH5 Phone Boxes; however, can’t be used while creating Community Challenges, which means that you have to find them while exploring Mexico.
Luckily unlike the Solar Panels, these are easier to find and throughout the guide below, I’ll tell you where to look for them.
Forza Horizon 5 Phone Boxes - Where To Find
You can find the Forza Horizon 5 Phone Boxes, especially in cities since that’s where most people live.
As such, try to look for them while exploring the streets of these cities.
An excellent place to find Phone Boxes in Forza Horizon 5 is Mulege, and you can start with the location marked on my map above.
If you drive to that spot, you’ll see an FH5 Phone Box that looks like the one in my image below.
Simply by driving on the streets of Mulege, you should be able to find and smash the 15 Phone Boxes required for the FH5 Silent Mode Accolade.
If by any chance you run out of Phone Boxes in Mulege, consider visiting the town named Guanajuato.
In the central area, you should find at least 20.
One last thing worth mentioning is that you may want to look for these Smashable Objects after completing all races in the video game.
That’s because some of the events take place in the cities mentioned above, and you’ll most likely hit some boxes while completing those races.
If you finish all races in the game, the Forza Horizon 5 Silent Mode Accolade should unlock naturally, or you’ll need only a couple of Phone Boxes.