There’s one part of the G2’s design that goes against the grain. There are no buttons around the edge - instead, the volume and screen lock buttons sit on the back. We’re not convinced this works.
The volume buttons sit within easy reach of your index finger, but we found the lock button hard to locate, and often ended up changing the phone’s volume instead of locking or unlocking the display. You can also unlock and lock the phone with a double-tap of your finger on the screen, which we found worked well most of the time. After a week with the phone we struggled to go back to using a button - tapping the screen just feels more natural. We still missed having a lock button on the side or top of the phone, though.