All phones will eventually stop working due to wear and tear on certain components, and some of the first few pieces of hardware to go are the physical hardware buttons, like the home button, lock button, volume rocker, and so on. If you’re looking to extend the life of your device as much as possible, then perhaps you might be interested in an app called the Knock Lock.

The app actually functions the opposite way of LG’s Knock Code where instead of users tapping their screens to unlock their phones, the app allows users to lock their screens by tapping a particular area on their phone, thus saving them from having to press the lock/unlock button too many times.

The setup is pretty straightforward and simple and all the user would have to do is choose a designated area that they want to tap in order to lock their phones. Unfortunately this does not work the other way around, meaning that if you wanted to be able to wake your phone up or unlock it by tapping the screen, you’d probably need to find some other mod (might require root access) or find a way to get LG’s Knock Code onto your device.

The developer of Knock Lock states that battery usage for the app is around 0.1%, so if you’re particularly concerned about battery life, it seems that Knock Lock will not be that big of a battery drain. The app is free for download on Google Play so if you’d like to learn more, hit up the Play Store for the download, or check out the video above to see it in action.

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