One phone
Move a book
This page only moves Focus or Align from one phone to another. The old phone loses that book. It does not touch anyone’s Google account or Apple ID.
A book you bought can be moved. A gifted book cannot. It stays on the phone that opened it. If a bought book is also on your tablet because of the same Apple or Google account, the tablet loses it too. The tablet does not keep a copy. The person who types the code does not get your login.
Both phones need wifi
Turn on wifi on both phones. Each one must be able to open the internet, not only show a wifi name. Open this page on both before you move anything.
Check if the transfer worked
Do this on the new phone before you type a code. If the book is already on that phone, stop. On your own phone or tablet, the book being here only means this is your one copy. The other device does not keep it after you move.
Move from this phone
Use these only after the check, and only when both phones are online. Your phone and your tablet both lose the book, even if the tablet got it from the same Apple or Google account. The tablet will not still have it.