Hi, thank you for contacting JustAnswer.com. My name is Russell. I feel that your question deserves an answer, though you have evidently decided to find a solution elsewhere.
In outline, as an initial answer, you need to first connect to iCloud with the old phone... then back up files to iCloud... then connect the new phone to iCloud after the backup is done from the old phone, and also disconnecting and de-configuring the old phone so that it is not connected to iCloud... and then get files from iCloud to the new phone.
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