10. Knock Code is awesome

LG's already given us one of our favorite new features with rear buttons — here's another one. The 2013's LG G2 brought the ability to unlock the phone by simply tapping on it twice. With 2014's G Pro 2 and continued with the G3, you can knock in a patterns — as in a pattern that only you know — to unlock the phone. So it's easy and secure.

There are thousands of permutations here. Knock in a square. Go back and forth. Go nuts. Go crazy. Just be sure to use a pattern that won't be easily guessed if you really want to be secure.

Trust us when we say Knock Code will spoil you for all other smartphones.

More on Knock Code here.