This is a remix of Forrestbond's case, which is a remix of Blackbird2016's case.
The headphone cut out was not big enough for my headphones, so I've enlarged it.
I printed in PETG. The phone just fits - it could probably be scaled up to 100.5 % or so. The fit needs to be snug to keep the case in place.
I also tried ABS, but found there wasn't enough flex, causing the corners to snap off when I put the phone in.