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How to type uppercase and lowercase letters when sending SMS from Samsung galaxy s4?

Generally, after entering "Write Information", if it is displayed as "ABC" in the lower right corner of the screen, press the "*" key, and if it is displayed as "Top Tip and Bottom Tip Horizontal" in the bottom center of the screen, enter capital letters. If only "Up" is displayed, the first letter entered is a capital letter. If nothing is displayed, the input is lowercase.