Will updating my iphone to ios 8 delete stuff?

HI, I currently want to update my iPhone 5s to ios 8 but will it delete my call logs, messages, facetime history and calendar events? Also, will it move my apps around? Thanks for the help! Ps sorry if the question is not in the right category.

No but here is a secret that everyone should know. If you do your update by connecting to computer then just click update when itunes asks you, you don't have to delete ANYTHING. Its also alot faster.

Normally, update iPhone will not delete any file. If you are afraid losing data, you can use iTunes to backup your iPhone before updating to iOS 8. Or you can use a 3rd party software like this iPhone file manager to copy the files from your iPhone to computer for backup. This way worked pretty well for me.

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