If I erase all setting and content then reset 1 of the phones will it affect the content and settings currently on my other phone?
iPhone 11 Pro Max
No effect on the iPhone being kept as is if you reset
the other iPhone correctly.
Here is a link to what you want to do. One step at a time,
let each step complete before going on to the next step.
What to do before you sell, give away, or trade in your iPhone or iPad - Apple Support
No.
No
I have 2 iPhones that share same Apple ID. If I erase all content and Settings then reset the 1 phone, will it affect my other phone
