What is the difference between a cheap and cheap (2 euro and 25 euro) bulletproof glass (both 9H)?

For my new smartphone Huawei P Smart.

What can you recommend to me? Is it worth it to buy an expensive one? Or is it the same as a cheap one?

The quality is different. 2 of my buddies have crack in the armor foil even though the phones have not even hit the ground.

I recommend you but a full screen armored film, eg. Something like that: https://www.bagmaxx.de/Huawei-P-Smart-MOCOLO-3D-Schutz-Glas-Full-Coverage-Tempered-Glass-Film-Schwarz?curr=EUR

Thus one does not notice the armored foil any longer. But look for something sensible.

Thanks for your answer, Would this be ok. Good?

https://www.ebay.de/...3198881421

This is from China and is similar to the one from your link