What is the correct way to hold the cell phone?

The cell phone must be grasped with both hands, using both thumbs to write.

What are the ideal measurements that a cell phone should have, in order to give comfort to our hands when it comes to grip?

140mm high, 65mm wide, 8mm thick, 122g weight, 2.5mm of curvature.

More information in our article, Hold your phone in a proper manner.

What is the correct posture to make a good use of the mouse and keyboard?

The forearm and wrist must be supported on a table or a desk, both when using the mouse or keyboard. They should never be in an elevated position.