Everything worth knowing about the glass on your phone.
Fitting guides, finish comparisons and honest answers to the questions the shop counter gets wrong. Written by the people who cut the glass.
Guides · 6 min read
How to install tempered glass without air bubbles
The bubble is almost never the glass. It is one speck of dust under the adhesive — and there is a reliable way to remove it before the sheet goes on.
Updated 26 September 2026
Comparisons · 5 min
UV glass vs full glue tempered glass: which to buy
UV glass is stuck down with liquid glue and a lamp; full glue comes with its adhesive already on. What each one is for, and why most phones need no UV at all.
Guides · 6 min
Types of screen guard: glass, film, UV, matte, privacy
Tempered glass, film, hydrogel, UV glass, matte, privacy and ceramic: what each type of screen guard protects against, what it costs you, who it suits.
Comparisons · 4 min
2.5D, 9D, 11D, 21D tempered glass: what the D means
2D, 2.5D and 3D describe real edge shapes. 5D, 9D, 11D and 21D are labels with no standard behind them. What each means, and what to check instead.
More from the journal
Fixes Rainbow effect on tempered glass: causes and fixes 5 min Device notes Tempered glass for curved displays: why the edges lift 6 min Comparisons Gorilla Glass vs tempered glass: what is the difference? 4 min Comparisons Tempered glass vs screen guard: which is better? 5 min Guides How to choose tempered glass for your phone 6 min Guides Tempered glass price: what each sheet really costs 5 min Guides How to choose a privacy screen protector 7 min Comparisons Matte vs glossy screen protector for sunlight 4 min Fixes Your protector cracked. Your screen didn't. That was the point 5 min Comparisons Privacy glass on a commute: what your neighbour can still see 5 min Device notes Why the iPhone 16 Pro Max needed a new cut, not a resize 7 min Guides Face ID, in-display readers and the 0.33mm question 4 min Fixes Dust under the glass: the sticker trick, and when to start over 3 min Comparisons 9H, 6H and the hardness numbers that mean nothing 5 minNothing filed under that yet.
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