I'm not sure if this is the right place to ask but maybe someone can help me out.
I lived in Australia for a few month and got a new number on my iPhone. I backed up my WhatsApp a few times while having that new number. When I got back to Germany I returned to my old number on the same phone. I did a factory reset after I came back and then switched to my german number with a clean WhatsApp history.
Now here is my question: Can I still restore my old history (Australian number) onto my new WhatsApp?
I'm not even sure if my Australian number still exists since I don't have the SIM anymore.