How To: Put Your Galaxy S3's Screen to Sleep Just by Double-Tapping the Display

The "Knock Knock" features on LG's G2 phone have proven popular and useful enough to spawn various apps and mods cloning these abilities for other devices. Porting the "Knock On" feature to our Samsung Galaxy S3 isn't as easily doable, since developers would need to create a modded kernel, like they did for the HTC One. The "Knock Off" function, on the other hand, is a lot more manageable.

How To: Add On-Screen Buttons to Your TouchWiz ROM (Root Required)

Samsung bucked the trend and threw hard keys onto the Galaxy S3 while most manufacturers are going the soft key route. This hack will add on-screen buttons to your TouchWiz-based ROM. You'll need a root file manager with a system writable text editor—I recommend ES File Explorer for this, but feel free to use whatever you want. If using ES, hit Menu, Settings, go down to Root Settings, and check Root Exploerer, Up to Root, and Mount File System.

How To: Play Any Nintendo DS Game on Your Samsung Galaxy S3

If you actually had to look up what "DS" stands for in Nintendo DS, that probably means you weren't a huge fan of the portable game system. To be honest, I never was. It's fairly bulky and has two tiny displays. Despite my hatred for the DS, Nintendo still delivered in the game department. Mario Kart DS, Pokémon SoulSilver, and New Super Mario Bros. are just a few of them.