Currently Being ModeratedSep 26, 2013 2:40 PM (in response to verapena)
Thank you for providing so much detail about the issue you are experiencing with the lock screen after upgrading to iOS 7.
First, I recommend restarting your phone and then resetting if it's still not working:
Restarting your device
- Press and hold the Sleep/Wake button for a few seconds until the red "slide to power off" slider appears, and then slide the slider.
- Press and hold the Sleep/Wake button until the Apple logo appears.
Note: Reset your device only if you are unable to restart it.
Resetting your device
Press and hold the Sleep/Wake button and the Home button together for at least ten seconds, until the Apple logo appears.
You can find the full article here:
If you are still experiencing the same issue, I recommend resetting all settings next:
Go to Settings > General > Reset, then choose Reset All Settings: All your preferences and settings are reset.
If the issue persists, the last thing I recommend is backing up and restoring your iPhone:
Thank you for using Apple Support Communities.