How to swap data between two iphones?

My sister and I are exchanging phones and I want to get all of her data into my phone and vice-versa. How do I do that?

Fully back up both iPhones on a host computer running iTunes select the option to back up apps as well.

Then wipe both iPhones: Settings>General>Reset>Erase all content and settings.

Once wiped connect each phone to your host computer and follow the instructions to restore the last back up from the "old" phone to the "new" one. Then do the same with the other phone to put your last back up on your sister's old iPhone.

Note that if some apps can't run on the "new" iPhone then they will not get installed. You'll then get the option to check for a compatible updated version of those particular apps.

Connect each of your phones to a computer then sync. Swap phones, then connect and sync.

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