I've tried several phone keyboards, but this one is my favorite

It's easy to take the majority of what our smartphones do for granted. So much of what used to be novel about a device with a screen -- that all the physical functionality of older cellphones had to be represented digitally, primarily -- is now commonplace. You don't think about your smartphone keyboard because you don't have to, but it's actually one of the more customizable features of modern Android and iOS devices.

Source : https://www.pocket-lint.com/smartphone-keyboard-comfort-personalization/