Comparison
- 9-key: big keys, fewer mis-taps, good for one hand and older users, more repeated candidates;
- Full keyboard: matches the PC layout and suits English, better with two hands;
- Many users enable adaptive layout so landscape switches automatically.
- Switch under Input Settings → Keyboard Layout;
- Enable one-handed mode (left or right) on large phones;
- Haptics and sounds improve feedback but use more battery.