3 stars then and the reason is:
Firstly, it slips quite a bit and the device is at risk of easily slipping out of your hands.
Secondly, although it fits perfectly, it doesn't protect the bottom side enough, putting the speaker at risk.
Thirdly, it slightly protrudes above the screen, which can be solved with a serious tempered glass.
On the positive side:
Firstly, it changes the appearance of the entire device (mine is green).
Secondly, the buttons are very well-fitted and easy to use.
Thirdly, the perfect fit also adds a small volume, which helps with the use of the device, for example, it doesn't get stuck in jeans, fits well on stands, etc.
Overall satisfied, and if it had better grip, I would give it 4 stars