Playing on the previous section that your backup password carries forward when you setup a new iPhone from an old iPhone backup, old Apple ID passwords or old lock screen pass codes (the digits you would use to unlock your iPhone) may help. It was common to accidentally enter your lock screen passcode at the prompt, or to enter your password for your Apple ID. In some very old versions of iTunes, the prompts to set up the backup password were unclear.

Try an old Apple ID password or old lock screen passcode.

Be sure to try some of your old 'less secure' passwords too!) 2. I know I used one of my 'junk' passwords for my iTunes backup password for a long time. (When backup encryption was first introduced, iOS security was less of a concern. So you may want to try some of your older passwords if it's been some time since you checked that box. From there, the encryption password setting 'moves forward' on to your new iPhone when you restore the encrypted backup of your old iPhone to your new one. Your iPhone backup password was set when the 'Encrypt iPhone backup' box was checked and turned on in iTunes. If all else fails, the last tip in this article is how to clear the backup password setting on your iPhone to reset the password. Both techniques have no limit on the number of passwords you can try. You can also test passwords in any of our software.

Note: You can test passwords in iTunes by trying to turn off the 'Encrypt iPhone backup' checkbox, or by trying to restore the backup (do this only if you want to restore a backup). If you can't remember your iPhone backup password that iTunes is asking for, here are a few different ideas to help you recover your encrypted iPhone backup password.

Lost password to unlock iphone backup