does anybody know for sure which iOS it comes with. Every time in the past I’ve upgraded current phone then get new one the current phone has newer iOS than the new model which means I can’t restore to new phone without a hassle.
You're going to have to delete enough from your old iPhone to get the amount of data on the old iPhone to less than 64GB or restoring from the backup will fail. To preserve your data transfer all your photos, documents and any other important data to apps and files on your computer, then do a full iTunes backup before deleting anything and archive the backup to prevent it from being overwritten by later backups. Then delete enough data to get the storage used to less than 64GB.and create a new backup. This is the one you'll use to restore the new iPhone.Thank you. Can you recommend what to do if old one has 256gigs, mostly pictures and new one only 64gigs. Do I just let it do it’s thing and it will just not do all the pictures?