Does a phone case damage the frame?

[yvmuell]

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Original Protective Case breaks my FP5

I have had an FP5 since it was released. I also ordered the original case to protect it. This is so loose that dust has probably got between the case and the FP5 over time and destroyed all the paint. This should not happen. Does anyone else have a similar problem? [Photo-1] [Photo-2] [Photo-3]