3CX: Adding 3CX on your phone Self-Provision your phone can allow you to use your phone as a soft-phone, take business calls...etc 1. Open QR Code In the 3CX Web portal, click the QR Code. it is next your profile icon. 2. Scan code A QR Code should be pop-up. You will need to scan it via 3CX mobile app, By default the mobile app will require you to scan a QR Code.