Secure File Manager

I have been using this app and been very happy with it.

As many essential files are saved on my phone, I decided to get a large memory card, so I could store everything there, and in the event of the phone failing, I can pop the memory card into a new phone.

I can’t see how to set up a Hidden folder on the memory card with this app. Is it possible? Also, if i can, will it be readable in another phone? Will the lock code, decode the files?

If not possible, is there a similar app that will allow me to do this?

Thanks

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