Why is 2-row keyboard better on smartphone?
the traditional 26-key, 3-row QWERTY layout has too many small keys with thumb typing. 
 QWERTY mini provides a 16-key, 2-row layout.

Q_vs_Qmini.jpg
 
The trio of keyboards - the BlackBerry Pearl, the Nokia E55, and the Sony M600. What’s wrong?

BBP_NOK_SON_001.jpg

What makes QWERTY mini different from the ones above?

1. Symmetric 16-key 2-row layout makes the up-and-down movement of both thumbs extremely comfortable. 
Each key becomes up to 66% larger. (cf. From the iPhone Pro to the Pro Max gives about a 20% increase.)

2. The most important point is that vowels form the central axis of a word.
The five vowels (A, E, U, I, O) remain as standalone keys in their original QWERTY positions. This eliminates any conflicts with consonants and preserves a natural typing flow. (This fixes the problems that other reduced-key layouts failed to solve.)

3.  Frequency-based consonant integration.10 letters (Q, Z, X, V, B, J, K, F, G, P) appear in about 10%  of English text.
 
4. You can type everything with just tap and double-tap.
 Simultaneous taps using the four triggers (W, A, O, L) increase speed and reduce delay.
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5.  It is a structure optimized for multilingual extended characters and split layouts in landscape mode. even if these features come later.

​QWERTY mini is not a replacement for QWERTY.
it's the companion for smartphones.


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