if my device is already set up and i now want to move from android
Moving data from Android to IOS
iPhone 12 Pro, iOS 16
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Here are two support articles related to what you want to do. The second one may be more along the lines of moving things to a set up iPhone.
Move from Android to iPhone, iPad, or iPod touch - Apple Support
Move content manually from your Android device to your iPhone, iPad, or iPod touch - Apple Support