Bugs in keyboard
I noticed that the Samsung keyboard won't let you have multiple languages. You can select several in the options, but there are no ways of switching them. No swipe on space bar, no Input icon in the notification area, nothing. Whichever language was "alone" before you selected additional languages will be the one that's active (e.g., if you have only English, and add French, then English will be your input and keyboard language. If you had only French, and then added English, French will be your language).
Also, I can't find a way to check/edit personal word list.