why do I have "ready for your new iPhone" message

That's supposedly a message that the data on your current device has been copied over to iCloud for transfer to a new device that was purchased with the same Apple ID. Here was a previous discussion on this, from someone who bought an iPhone for a child.

https://discussions.apple.com/thread/253349793?answerId=256272803022#256272803022

So I bought the new iPhone online from the apple store app on my phone, with my apple card/ID .. but the phone was a gift for my son.. he is already using it.. and I have this message on my phone, in settings:

It would be better if you can please re-post with a screenshot, in order to understand the phenomenon better. Images/pictures speak louder than words. 

Please understand this is a public forum: While attaching a Screenshot, do not provide any personal credentials, such as Card detail, email id, apple id, IMEI number, Serial Number, Phone number, Order ID, if you are sharing a map ensure your location is not identifiable, etc.

SravanKrA wrote:

It would be better if you can please re-post with a screenshot, in order to understand the phenomenon better. Images/pictures speak louder than words. 

"Ready for your new iPhone" is a standard message that's supposed to relate to the online purchase of a new iPhone using the same Apple ID, and a backup that's automatically created to facilitate the transfer of data. It's supposed to be cleared by deleting the backup on iCloud, although one could look up how to do that.

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