How do I change the font from my volume side button on a s9

[Android Central Question]

I want to be able to change my text font from my volume side button on my s9.

 

[Adam Frix]

what makes you think you can do that in the first place?

 

[mlblack16]

If it exists, you would have to use an app that works with root access to remap the volume toggle, but then it would be a mess trying to adjust the volume.

 

[B. Diddy]

I think the OP is asking how to change the font size using the volume buttons, which used to be a feature on past Galaxy phones. Not sure if that's still possible. You could try using Textra as your SMS app instead, which I think has that feature.