LG Cosmos 2 Key Functions

Solution
They're menu selection buttons for when you have the phone open.

You can see in this image;
34024636-2-300-DT1.jpg

The one on the right would open the contacts menu, and the one on the left would open the messages.
They're menu selection buttons for when you have the phone open.

You can see in this image;
34024636-2-300-DT1.jpg

The one on the right would open the contacts menu, and the one on the left would open the messages.
 
Solution
Thanks Apanzee