I'm getting a iPhone plus and was wondering when I back up the phone and delete everything off my iPhone 6s will everything stay on the 8?

I'm getting a iPhone plus and was wondering when I back up the phone and delete everything off my iPhone 6s will everything stay on the 8?

Yeahadfkj

I assume you meant iPhone 8 Plus & yes it would of course. Also you backup the older one 1st & restore from that backup on the new one & then you could delete from the old.