This is the English edition of a review from my Japanese YouTube channel, iestaLife. I review gadgets from my home studio in Japan, so product links go to Amazon Japan.
Quick take
If you use the Spigen Slim Armor Pro MagFit case on a Galaxy Z Fold8, most full-size cover-screen protectors will push against the case edge and lift. Spigen’s own EZ Fit Pro avoids this, but it was out of stock when I recorded. A smaller two-pack from KPNS does fit with the Spigen case, but only if you place it very precisely.

What I tested
- KPNS tempered glass for the Galaxy Z Fold8 cover screen (two-pack, smaller size)
- Spigen Slim Armor Pro MagFit case for the Galaxy Z Fold8
- The full-coverage black-edged glass I used before, for a size check
What I found
- There is no alignment guide in the box, only the glass and cleaning kits. Positioning is the hard part.
- I marked the safe area with masking tape, but only at the top and bottom. My first attempt sat slightly too high, and the top corner hit the case.
- After lifting and repositioning it, the case no longer pressed on the glass, although one edge of the glass stayed slightly raised.
- Lifting the glass let in a speck of dust and some finger oil, and one edge stayed slightly raised. This glass does not forgive a second try.
- The KPNS glass is clearly smaller than full-coverage black-edged glass, which is why it clears the case.

Comparison
| KPNS small glass | Spigen EZ Fit Pro | |
|---|---|---|
| Price | 606 yen for 2 | About 3,000 yen for 2 |
| Install guide | None | Included |
| With Spigen case | Fits if placed precisely | Made to fit |
| Availability | In stock | Out of stock |
Prices and stock status are from Amazon Japan at the time of recording. The KPNS price was a sale price.
How I would install it next time
- Fit the case once and check how far the glass can go.
- Mark all four sides with masking tape, not just the top and bottom.
- Clean the screen on a towel so the camera bump does not rock the phone.
- Aim to get it right the first time. If it goes wrong, use the second sheet rather than lifting the first.

Who it is for
It suits Spigen Slim Armor Pro MagFit owners who cannot get the EZ Fit Pro and do not mind careful alignment. If you are not confident installing screen protectors, the EZ Fit Pro with its guide is far easier. I am also considering a case with a little more room at the edges, since this case’s hinge cover makes the phone tilt slightly when I stand it up with a MagSafe ring.
Watch the video
The video is in Japanese. Useful chapters: 3:28 masking tape guide, 4:49 first fit check, 6:21 repositioned result.
Limitations
I installed one sheet on my own phone and case. The glass is sold on Amazon Japan, and listings for similar Fold8 glass change often, so check the product details before buying.
Products
KPNS glass for Galaxy Z Fold8 (two-pack): on Amazon Japan
Spigen Slim Armor Pro MagFit for Galaxy Z Fold8: on Amazon Japan
Spigen EZ Fit Pro glass for Galaxy Z Fold8: on Amazon Japan
The Amazon Japan links above are affiliate links. As an Amazon Associate, I earn from qualifying purchases. Check the listing for the exact model, current price and shipping availability in your region.
More reviews in English




All Screen & Lens Protectors (27) →Browse all English reviews →
This review is also available in Japanese.

