Are you new to the game? Welcome to the forum!
You can change it starting by clicking that "Mirror's Edge Catalyst" logo on top left to access the main website.
Log in to your profile and you should able to view your name together with your emblem. Click "Edit Tag".
You can also download the Mirror's Edge companion app for your smartphone from App Store or Google Play to change your emblem while in-game.
Link : https://play.google.com/store/apps/details?id=com.ea.gp.mirrorsedgecompanion&hl=en
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You can change it starting by clicking that "Mirror's Edge Catalyst" logo on top left to access the main website.
Log in to your profile and you should able to view your name together with your emblem. Click "Edit Tag".
You can also download the Mirror's Edge companion app for your smartphone from App Store or Google Play to change your emblem while in-game.
Link : https://play.google.com/store/apps/details?id=com.ea.gp.mirrorsedgecompanion&hl=en