Android
Switch Keyboard Language While Typing auf Android
Android keeps the keyboard language switch inside the text field itself, not tucked away in a settings menu. If you already added more than one keyboard language under your system settings, you can jump between them without leaving the app you are typing in.
Tap into any text field first, then look at your keyboard for the small globe or language icon. Follow Tap on a Text field ➤ Tap on the Language switch key or hold the Space bar ➤ Choose a Language and pick the language you need from the list that appears.
Holding the space bar works as a shortcut on most keyboard apps and skips the extra tap on the globe icon. If neither option shows up, only one keyboard language is currently active, so add a second language through your keyboard's language settings first.
After switching, autocorrect and suggestion words update to match the new language, which can feel off if you switch back and forth often in the same message. This is normal behavior, not a bug, since the keyboard only keeps one active dictionary at a time.