Well android's default keyboard learns it pretty well. Not only does it learn words, but also their usage by observing patterns in sentences. One time i had to

Well android's default keyboard learns it pretty well. Not only does it learn words, but also their usage by observing patterns in sentences. One time i had to type a fb comment 3 times because the sending kept failing . On the third time, the keyboard was predicting entire words of the sentence, sometimes even before i wrote a single letter!