24:T529,Some of the models are designed for rigid materials and others for flexible ones. The models materials are not interchangeable, so pay attention to the file names. If you have any request on the design just ask me.
For other phone cases check this.
Here is the explanation of the files names:

Flex: made for elastic filaments like TPU. Not tested.
Rigid: made for rigid (non-elastic) filaments like PLA, ABS, HIPS, etc. The holes for the buttons are opened on the front side. Tested only on PLA.

I spend part of my time making these models, letting them available and free for everyone. If you want to support my work, you can contribute with me here:

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Prop Guard for NigHawk 250

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Time Machhine

2020 DRAWbot Drawing Robot

G-Clamp Big

GIRO.remix - OctoPrint Raspberry Pi Camera Mount

Go Pro Wheel Case w/ Lid (Hero 8)

Motorola Moto G x1032 case

Logitech G Pro X (Wireless) Headmount Connector

Gauge 1 Emily the Emerald Engine Prop Replica

Sprite Pro Extruder CoreXY Linear Rail Bracket for Mercury Zero G