iPhone 12 mini, 256GB, Face ID functional, but a junk item

I purchased this used about a year ago.

The screen is clean as I've kept a screen protector on it.
(The upper right corner of the screen in the photo is just where the protector is peeling; the screen itself is clean.)

Please check the images for other minor scratches.

The battery was replaced with a non-genuine one (100%) at the time of purchase, and I've used it for a year since then.
Please estimate the current capacity, knowing the above. (I didn't notice any particular issues with battery drain during use.)

The camera works without any problems.

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There are two things that don't work:

- Wireless charging doesn't work.
(Charging via cable works.)

- The sleep button doesn't work.
(Can be substituted with the AssistiveTouch function.)

Due to the above reasons, I am selling this as a junk item (no returns).

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Blue iPhone 12, dual camera, 6.1-inch display.

- Model: iPhone 12
- Color: Blue
- Screen Size: 6.1 inches
- Thickness: 7.4mm
- Camera: Dual Camera

Series: iPhone

Model Name: iPhone 12 mini

Smartphone Color: Blue

Capacity: 256GB

Functionality Issues: Yes

Screen Damage: None

SIM Free

Included Accessories: Charging cable, box