Go to the My Amp section of the app to see a list of all the presets on your amp.
Use the horizontal bar under the My Amp title to switch between different filters of your presets. For example, see All Presets on the amp, just ones you've created, or just your Setlists.
Tap the search icon in the top left of the My Amp section to search through your presets. Search results should update in real time in the list below.
Tap the circular X icon in the right area of the field to clear out the text and start over.
Tap the Cancel button to exit out of the search mode.
Note: This functionality is not currently supported for Fender Tone on Android devices, but will be coming soon!