On the sides, again, everything is almost the same — volume rocker buttons on the right alongside the power button, and there is a dedicated camera shutter button as well. (phoneradar.com)
However, the buttons are speculated to act as camera shutter buttons, power buttons or a shortcut key for certain features. (phoneradar.com)
There is also a dedicated camera shutter button on this side, which lets you launch directly into the camera application with a press, even when the device is locked. (androidauthority.com)