Turning off auto correction can be useful to people who normally type in a different language.  It can get very annoying when it corrects words you don’t want corrected on your Galaxy Mega phablet.  What pisses me off is how it still keeps correcting me even though I clearly deleted the word and retyped it numerous times exactly how I want it.  I thought a smartphone is smartphone because it is suppose to understand what you want and don’t want?  Personally I think it’s just Samsung’s Touchwhiz interface that is causing the annoying predictive text issue.  I normally flash a custom pure android rom but my Note 3′s AT&T bootloaders are locked so until an unlock comes out, I am stuck with Samsung’s default Touchwhiz. To disable the predictive text on the Galaxy Mega

(For Touchwhiz users)

Go to Settings > Controls > Language and input > Samsung Keyboard > Predictive text, turn it OFF. This is pretty much same way as for other Galaxy Touchwhiz devices. Galaxy Mega 3 disable spell check or auto correction Video below is for Note 2 but it’s still same touchwhiz interface so you can use it to guide you.