One of the best and unique features LG has brought in its latest devices is the cleaner front face of the smartphone. In other words, the new devices, at least the high-end ones, off late doesn't feature any buttons on the sides or the front. First introduced in LG G2 smartphone, the placement of the volume rocker and the power key at the rear side is pretty much an impressive idea that LG has come up with.
There are number of advantages that come with the placement of the buttons at the back. Apart from a clean front design, it also gives a convenient and easier way to access the power button and volume rocker to the users. But the problem comes when you have to lift the phone every single time to awaken it from the stand-by mode.
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Thus, despite the greater advantages, it is irritating for the users if the phone is kept on the table with the front-face up cause the user will have to lift the phone up to awaken it, as said earlier.
But LG has found a better way to solve this problem and guess what, the new idea is equally interesting like the placement of the button. This is something you must have probably heard about by now. Called as Knock Code, now the devices with the back-keys like in the LG G2 and LG G pro 2 can now be awaken by a simple knock pattern on the screen of the device. Previously the Knock On feature was there, which could awaken the device with a simple double-tap on the display. You can call the Knock Code an improved version of the Knock On feature.
Other smartphones that would be using the feature is probably the LG G2 mini and the unannounced LG G3.