Will IOS 7 upgrade delete my entire reading list in safari?

So i have an old iphone 4 that still works but is not updated. It is in IOS 6 and i'm thinking about upgrading it to IOS 7 but i have a lot of important stuff saved in my reading list. If i upgrade, will it delete the entire reading list? And If it does and i need to back it up on itunes, is there any other way to back it up in a different place?

Since it currently runs iOS 6 it probably won't Delete anything. But Backing up is Safer. You can backup in iCloud.Free Limit up to 5 GB.

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