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Today, smartphone has become an expensive and delicate gadget, not only the medium of communication. In such a situation, the safety of her screen becomes the biggest concern. The 2D, 3D, 5D, 9D and even 11D glass protector found in the market are confusing consumers. The question is whether all these “D” really matter, or are they only a new trap of marketing?

What are D-Glass?

“D” means dimension means dimension. The more “D” added to the mobile screen glass, the extent the glass covers your screen and how much better it is.

But technically it is not a standardized measurement. There is no official measure of this. It completely depends on the marketing strategy of the brand.

2D Glass: Original Security

The 2D glass is the most common and cheap option for flat screen. It only covers the middle part of the screen, and does not completely covered the edges.

Low price

Scratch and brake risk from age

Curved does not fit on screen

3D Glass: A little more protection

3D glass has a mild curve, causing it to some extent the edges of the screen. It is considered a better option for modern smartphones, especially which contains curved display.

Edge-to-ed coverage

Better finish and look

Slightly expensive

From 5D to 11D: Reality or confusion?

Talking about 5D, 9D and 11D glass, these are mostly marketing terms. Their purpose is to make the consumer feel that the protection level is very advanced.

But according to experts, there is no technical difference between 9D and 11D glass, it only reflects finishing, thickness of glass and smoothness of the edge.

Premium look

Full screen coverage

Price more

Quality brand

Truth: Strong glass = good quality, not more “d”

The real strength of a screen protector is not in its “D”, but in its hardness rating (eg 9h), glass quality (such as tempered glass), and in coating (anti-scrach, oil-resistant).

Suggestions for consumers:

Buy branded glass only – Local and cheap D glass may lack quality.

See fitting according to the phone model – there is a different curve for each phone.

Review and rating check – Be sure to read the experiences of other consumers before online purchase.

Focus more than D on hardness – “9h hardness” glass is more reliable.

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