IPhone – Lost everything after iPhone sync–How to get it back

data synchronizationiphoneitunes

I plugged my iPhone into my computer last night and opened up iTunes. It said I needed to sync and download the latest version. I clicked ok. After all was done my iPhone has been set back to Decemeber.

Therefore all my photos since December are gone. All my contacts – gone! All my conversations on Messages and WhatsApp – gone!! This is a major issue as my iPhone is part of my work scheduling.

What has happened? Can anyone tell me what I can do to get it back?
Also why did it do this?

Best Answer

If you've backed up recently, you might want to do a full restore, which will wipe your iPhone clean and reinstall iOS. After it's done that, it will offer to restore from a backup, reinstalling all apps, calendars, email accounts, etc. enter image description here

http://support.apple.com/kb/ht1414

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