Switch back to my old iPhone

The OP is asking how to transfer data from a newer iPhone back to an older iPhone.

Suggest you obtain more information on this, since the Apple Support document assumes that the transfer will be from old to new.....not from new to old.

For example......if the "new" phone is running a higher iOS version than the "old" phone, it won't be possible to transfer data from the new phone back to the old phone unless the old phone can run the same or higher iOS version as the new phone.

Another thing to consider......will the old phone have enough storage space to handle the transfer from the "new" phone?

Hello!

Please see if the steps in the following Support Article will work: Transfer data from your previous iOS or iPadOS device to your new iPhone or iPad - Apple Support

Have a great day!

Thanks for the insight, and the correction. I was thinking that the steps would be similar, but I didn’t consider what you wrote above. How would you go about this process?