I've just spent like 10 hours this week trying to figure out how to get my Android history into iOS. I finally did succeed with one the paid apps, but it's crazy to me that Whatsapp hasn't fixed this (and neither has Signal, by the way).
I wonder why there are paid apps an NO, ZERO information on how to do it with a text editor, some copyaste and javac/xcode. Like DeCSS, from a more civilized age
for free
If you're willing to pay for an app, you can definitely do that.
https://www.syncios.com/icloud/how-to-recover-data-from-itun...
*I'm not advocating for this specific app, I've never used it and couldn't comment on how well it works, just an example*