Lost all data/contacts after iPhone iOS 5 upgrade. Backup file was made after it deleted phone info. Any way to get it back?

Sound like you're using a PC

Look at Article HT1414

Also, these are the locations where back ups are stored on a computer:

Where iTunes backups are stored on your computer

The folder where your backup data are stored varies depending on the computer's operating system. Make sure the backup folder is included in your periodic data-backup routine.

iTunes places the backup files in the following places:

• Mac: ~/Library/Application Support/MobileSync/Backup/
• Windows XP: \Documents and Settings\(username)\Application Data\Apple Computer\MobileSync\Backup\
• Windows Vista and Windows 7: \Users\(username)\AppData\Roaming\Apple Computer\MobileSync\Backup\

Note: If you do not see the AppData or Application Data folders, you may need to show hidden files (Windows XP, Windows Vista, Windows 7), or iTunes may not be installed in the default location. Show hidden files and then search the hard drive for the Backup directory.

Restore the file from recycle bin and then see if you can locate the 7/30 backup per the above windows locations.

I am having the same issue. Lost all contact info. All my Aps are there but all the data/progress is missing. When I plug my iphone into the usb fto synch up with my itunes on the computer a message comes up and says "enter the password to unlock your iphone backup file". This is very frustrating

Brian, I have located my info following your directions- Thanks. Now I just need to figure out how to apply that file to my iphone 🙂

Before any major upgrade to a new iPhone, one should allows do a backup of the old iPhone. After you get your new phone, you need to do a restore. Sync will not fully restore your phone. If you do just a sync some contacts, calendar events, camera roll photos, movies, Home Sreen buttons, etc will be missing. Don't worry, all of this data is backed up by iTunes each time you plug your iphone into your computer and run iTunes.

Restore will ask which backup to use. Notice that the backup date is shown in the pop up window. Pick the last backup that you did with your old phone and restore will put all your data onto your new phone including photos, contacts, apps, notes...

Special warning on Notes: Notes are now tightly coupled to your email accounts, so make sure all of your email accounts are on your new phone and activated. Also, in Settings>Email>accounts there are Notes switches that need to be turned on to see all of your notes. For example, if you have 2 accounts, but only 1 has Notes turned on, you won't be able to see all of your Notes. Simply flip the Notes switch and more Notes will appear. This Notes switch sometimes gets toggled to off after a iPhone reboot, but your notes are there; just toggle the switch in Settings and all is fine. Hope this helps!

hi iv had same trouble with my iphone 4.. i found the folfer with the back up i want to restore onto my phone. how do i go about doing that?

hi. i updated the ios of my iphone 3gs but i lost my contacts, photos, and messages. but my phone synced in twice after i have updated it. i tried pressing the restore back up button, but i could recovery any of my contacts, photos, and messages. please help. thank you.