“You can activate your Giffgaff SIM by login into the webpage www.giffgaff.com/activate and then Enter the 6-character activation code printed on the SIM card.” 1. Activate your giffgaff SIM Go to www.giffgaff.com/activate or click on … Continue reading Giffgaff.com Login Activate SIM : How to Activate your giffgaff SIM