Iphone Books are not Syncing

Hi,

I have a Macbook Pro M1, iPad and a new iPhone. Books that were uploaded are available in Books on both my MBP and iPad. The books are not being synced to my iPhone. What I am experiencing is;

• Collections added to either MBP or iPad is syncing to all 3 devices.
• Books added to the new collection is only syncing to the MBP and iPad.
• Collections added to the iPhone is syncing to the other devices.
• Books added to the new iPhone collection is syncing to the other devices.

I have tried the following suggested solutions;

• Restart iPhone.
• Upgraded to IOS 18.
• Logged in/out of my Apple ID.
• Ensured that all settings as prescribed in Apple documentation is correct.

None of the above has resolved the issue.

Any guidance to find a solution will be appreciated.

Regards,

Leon