Views: 1,631 Giffgaff Login Activate SIM: How to Activate your giffgaff SIM 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 … Continue reading Giffgaff Login Activate SIM: How to Activate your giffgaff SIM