Have a look at his EXISTING giffgaff SIM card first. If it has a smaller nano-SIM pop-out as per the image below, then carefully push out the nano-SIM and simply put it into the new phone. No need to do anything else.
If the current SIM does not have this pop-out, then get a new giffgaff SIM card. Either:
- Order a free SIM here
- Or if you can’t wait, buy a cheap unactivated SIM from a local store for about £1
All new SIM cards are 3-in-1 triple SIMs, so will be the correct size for the phone.
When you have the new SIM:
Do NOT create a new giffgaff account. Make sure he is logged into his EXISTING giffgaff account (the account associated with the number you wish to retain).
If you can't remember his existing account details, click here
Once you are logged into the correct giffgaff account, follow these 'SIM swap' instructions
His existing goodybag, credit, and original number will all get transferred to this new SIM.