There's a bug in Apple's iOS 11.1 that automatically changes the letter "i" to an "A" with a ... In "short-cut" type a lowercase "i." This overrides the autocorrect so that every time you type ...
The origin of the terms uppercase and lowercase might seem pretty self-explanatory. Upper and lower must be references to the height of the letters, and the use of case is presumably an offshoot o ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback