But that doesn’t mean you’re able to’t back up your contacts.
You just have to go about it a different way.
Here’s what you should probably know.

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Eventually, there were SD cards, but not every phone had them.
Notice that Apple products don’t have CD/DVD drives and iOS devices don’t haveSD cards.
To Apple, these are more powerful and flexible options for transferring data to new phones.
Jailbreaking can give you all kinds of options that Apple doesn’t include by default.
you’re able to damage your phone orvoid your iPhone warranty when you jailbreak it.
And, even if you do this, why bother backing up only address book data?
Don’t you want to backup and transfer all of your data from one phone to another?
your machine and iCloud are definitely better for that.
How to Transfer Contacts Without a SIM Card on iPhone
Forget SIM cards.
TapContacts(in iOS 10 and earlier, tapMail, Contacts, Calendars).
After that process completes, remove the old SIM and replace it with your iPhone SIM.
Double-check all of your contacts imported before you get rid of the SIM.
In general a reset, update, or removing and re-inserting the SIM card will sort things out.
Different models of iPhoneuse different types of SIM cards, which will have an effect on the overall price.