Get your free giffgaff sim card from the giffgaff sim card link above, the giffgaff sim includes £5 of free credit when your first top up is £10 or more. The giffgaff network is on O2, with it you can choose a number of goodybags to give you extra value each month, the links below show what you get for each giffgaffs goodybag. To use giffgaff you need a unlocked mobile phone, it is perfectly legal to unlock a mobile phone, many independent phone shops do it for between £5 to £15, alternatively if you have a phone already on O2 or Tesco you won't need to unlock it as they already use the O2 network, then you put your giffgaff sim card in the phone and you are up and running. You can top up your giffgaff sim using your credit card or you can use a giffgaff or O2 top up voucher from any shop which sells top ups, a giffgaff voucher is the best one to use as it activates faster. Also with giffgaff all 0800 numbers are free, and if you encourage you friends to join giffgaff you will get free calls giffgaff to giffgaff up to a max of 60 minutes per call without using your minutes on your goodybag, if you hang up after 60 minutes and ring them again you then get another 60 minutes and so on. It is ideal if you have children as they cannot go over the specified minutes leaving you with a big bill! All goodybags over £10 include truly unlimited texts and internet, Click on the links below to give you details of the various goodybags. A new range of data goodybags called gigabags have just been launched ideal if you have a broadband dongle or an ipad details of those are also below. Click on the link above to order your free sim card. If you require a microsim for an iphone or ipad click the link below.