Giffgaff SIM Card Nano Micro 3 in 1 size FREE £5 Credit Giff Gaff PAYG 4G Data Product Description: 3 in 1 size push out SIM suitable for any device Super fast 4G now as standard Compatible with 4G, 3G and 2G networks £5 Bonus Credit with your first £10 Top up Free Calls and Texts to other Giffgaff Members Keep your old number Runs on the O2 Network, unlocked or O2 device required to use