Why do I need to keep redownloading the same iBook

On my iPhone everytime I want to read the same ibook I need to redownload it everyday.

On my iPad once I download it once I don’t have to download it again

Why is this ?
brian ramdhaniCT Technician Asked:
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JohnBusiness Consultant (Owner)Commented:
Same IOS level?   Do you have enough space?

If not something simple, is there some message or other indicator you get?

For most of us, it would just work.

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brian ramdhaniCT Technician Author Commented:
iPhone has 1.32 gigs free
JohnBusiness Consultant (Owner)Commented:
Make sure IOS is at 11.2  (newest) and other than that, you may need to reset your iPhone. Try powering it off and restarting, but if these things do not work, then you may need to reset the phone.
Jackie ManIT ManagerCommented:
If still no go, it should be a bug in relation to your Apple iTunes account and you need to contact Apple and ask their engineers to fix it.
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