How to get your contacts from an old iPhone to a newer one?

How to get your contacts from an old iPhone to a newer one?

Save them to your sim card

From experience, the older iPhones still let you get the iOS upgrades as they're given. If that's true, you should have iCloud and will be able to back up the contents of your phone including contacts. Settings-iCloud-Manage Storage/BackUp, from there you can select Manage backup to pick the things you want backed up and then at the very bottom you can push back up and it does so. Once you get the new device sign in as the prompts say and it'll have you sign into iCloud, this restoring things for you.