Small prop that slides into credit card slot and holds phone case at desired angle. Prevents phone from slipping down into flat position.

Bought a new phone case and found that it wouldn't stay at the right angle, always slipping down due to the weight of the phone.

This device fits into one of the credit card slots in the phone holder and holds the phone at 3 different angles.

Print instructions

I printed it in PETG, no special instructions, really simple to print.