The most wasted money I've ever spent in my life on a screen protector. I bought 3 packs of 6 stickers and managed to stick only one. For over 15 years, I've been applying all kinds of screen protectors myself, I have a lot of experience and have never ruined any. The sticker doesn't peel off from the protective film as it is in the package. If you manage to peel it off and put it on the phone, it doesn't stick to the phone afterward. It leaves bubbles or comes off entirely when you try to remove the second film and doesn't stick again. I decided to write a review just to prevent others from making the same mistake as me. Completely useless construction. I do not recommend it to anyone.

the only screen protector I have bought that actually doesn't leave bubbles on the edges and doesn't get pushed out or come off when you put the phone case that came in the box

Purchased on 20/12. The packaging contains two protective glasses and three cleaning cloths. It does not include a wet wipe or a dust cleaning sticker. In my attempt to apply it, I removed the sticker from the back so that it would stick to the screen of my phone.

I thought that by removing this sticker, the logos depicted (see photo) would also be removed. The logos were not removed and yet I proceeded to stick it on. Then, when I tried to use my phone, I couldn't see anything because of the logos.
Immediately after, I removed it and tried to understand how the protective glass had logos on it. I reached a point where I thought the glass actually had logos on it and I believed that the money I spent (4.40€) went to waste, so I left it aside.

An hour later, I tried again to apply it. I took the glass and tried to separate the possible sticker with the logos from the glass using a knife. At some point, I was lucky because I used my nail and managed to separate the sticker from the glass. Meanwhile, during the time I left it aside, I had stuck the adhesive film on the glass from the other side so that it wouldn't lose its adhesive power.
So, I remove both stickers, apply the glass on the phone, and unfortunately, it went on crooked. I remove it and reapply it successfully as securely as possible. In the end, it stuck except for a few small areas that left empty air space.
Therefore, to separate it, you will need something very thin, like a pin for example.

Regarding the protection, I consider it not to be reliable, but it is better than having no glass at all. However, when I find something more durable and sturdy, I will change it.

TL;DR
For the price, it's great!

Detailed review

€3.00 for 2 screen protectors is not much. The package includes 2 screen protectors and 1 cleaning cloth. It does not include cleaning wipes, dust removal stickers (not that I ever found them useful), or alignment guides to place it straight on the screen (which have been useful in the past).

The finger glides smoothly on the surface of the protector and does not affect the touch function or the under-display fingerprint sensor.

It does not affect the screen colors.

I deducted 1 star for the following reasons:

1. The protector has protective stickers on both sides (like all of them) that you remove before placing it. These protectors have a sticker in one corner that you pull to remove the protector (photos). When these stickers are pulled, they come off on their own without the protective membrane following, which remains stuck on the protector. Be prepared to have something very thin, like a razor, and carefully separate the membrane from the protector before (the first one) and after (the second one) placing it.

2. The protector is not smoothed on the edges, so if you use gestures for back or home buttons, the finger gets stuck on the edge of the glass. If you use a phone case, this particular characteristic probably won't bother you (which is why I didn't deduct another star from the rating).

As for durability, I don't have an opinion yet and will update in a little while.