Jailbreak fro the iOS 7 was released recently. Given how Apple has added plenty of cool features to iOS 7, the jailbreak has not really caused the stir of happy emotions as it usually does, but still it enables you to do some pretty nifty cool things with your iPhone that perhaps Apple would not appreciate. One thing that really did change as we moved from iOS 6 to iOS 7 was the way the devices unlocked. Gone was the pretty Slide to unlock box and the sound of the unlock was gone too. It was one of those characteristic sounds that you just instantly picked up.
however, with jailbreak now available, it is easy to roll those days back and enable the sound. To do the same, all you need to do is install the tweak called TheUnlockSound7 from Cydia. You obviously need to have a jailbroken device to do the same. The tweak is available for free of cost from the Big Boss Repo. In case you do not require the tweak, you can directly uninstall it via Cydia too.
Not just the usual sound, but you can also customize the sound and choose a sound to your personal liking too. Like always, we do urge you to keep your iPhone backed up-to-date when playing along with tweaks as there may well be a chance of something going awry.