Reading on plane
Can I read kindle books on my phone on a plane?
iPhone 12 Pro
Can I read kindle books on my phone on a plane?
iPhone 12 Pro
This answer may hep you --> Can I read ebooks offline? - Amazon Digital and Device Forum
This answer may hep you --> Can I read ebooks offline? - Amazon Digital and Device Forum
Yes. Once you start reading a book, it's downloaded to your device. Unless you delete it, you should have no problem.
Reading on plane