On my last trip i realized that while I was licensed to fish for trout in Pennsylvania, I did not have my license on my person for the whole year! I did have it on my phone, but legally that does not mattter.
I Googled this to confirm >
Can I show my fishing license on my phone in PA?
Beginning in 2020, fishing licenses do NOT need to be displayed. However, you are still required to have it with you while fishing and it must be provided upon request by a Waterways Conservation Officer. A screen shot or electronic copy of your license stored on your device is acceptable.