Just got given the above from a friend who had this as an upgrade but doesn't want it. I already have an old IPH5 which has been well used so the new one is preferable. Can I just transfer my SIM from my old IPH5 to the new one?
However, if you want to keep all your data etc, you will need to do a full backup of your old iPhone (e.g. to iTunes on your Mac/PC) first and then connect the new iPhone to do a restore from the old backup. This assumes, of course, that the new iPhone has at least the same capacity as the old one. If not, you may run into problems.