I think it's a built-in feature of your phone, like a clipboard, you just need to google how to display a history of copying text in the "clip tray" according to the type of phone you're using.
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is there another way I could transfer the generated addresses outside of the app??? I hope to hear from you reasonably soon!!!
If Bitpay also allows users to highlight(select) addresses in the app directly, then that's an alternative.