Need to back up everything from lost old phone to even older backup phone
So I stupidly lost an iPhone 13. However, I do have my backup 10 with me. No, the 13 wasn’t on FindMy and was essentially a WhatsApp unit with all of my apps on. I’ve re-entered AppleID etc on 10, but how do I now get as MUCH as possible onto the 10 from the lost 13? Do I go to setup and erase/start again? Can I get pics etc back? Can I get apps back with logins to the 10? Thank you for your kind help, and I’m a war journalist if that goes any way towards explaining the slightly chaotic approach.
iPhone 13 Pro Max, iOS 18