Difference Between Phone and Global Key Activation?

WHAT IS THE DIFFERENCE BETWEEN PHONE ACTIVATION AND GLOBAL?

Phone activation game keys require you to call a phone number after purchasing the game to activate the key. The game publisher provides phone activation keys, and they are often region-locked, meaning they can only be activated in certain countries or regions.

A global key refers to a game key that can be activated anywhere in the world. Global keys are not region-locked and can be activated on Steam or another platform without any region restriction.