How to Change the Language in the App Store

Tap the 'Settings' app.
Select the 'General' option.
Choose the 'International' option.
Select the 'Language' option. Choose the new language from the list of options and tap 'Done.' This changes the language for all functions on the iPhone.
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How to Set Korean Language on the IPad (3 Steps)

Tap the 'Settings' home screen icon and then tap the 'General' option.
Select 'International' and then tap the 'Language' option. Tap the language option that displays Korean characters.
Tap 'Done' to set your iPad's language to Korean. After you change the language, the screen becomes black with some text displayed for a short time before the home screen appears.
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