@feesaaa if brining number to giffgaff from another network the earliest date would be Monday next week sorry as transfers don't take place over weekends here's a full guide to transferring
please follow this guide to Transfers hello an welcome my friend .
you will need to first make sure your phone is on 02 or unlocked
an that you have requested a pac code from previous network
if need a giffgaff sim card order one here please
an then activate your giffgaff sim with £10 voucher even an 02 voucher works.
before you can fill in the number transfer form with your PAC code . .
to activate your sim follow this link
http://giffgaff.com/activate an click on activate with top up voucher .
After your sim is fully activated this is when you can see your number here
and able to make and receive calls click on link below and enter your pac code http://giffgaff.com/support/transfer
the date format is like this eg 18/03/2019
The form will always show the next available date for transfer
also remember to input your old networks number without gaps eg 07 then the other 9 digits
When filled out the transfer of number form >> https://giffgaff.com/support/transfer to bring in a number to giffgaff account then have dates can choose from to when will start the transfer of number to giffgaff account.
On the date selected then can take anytime on that date to 9pm for the ported in number to show on giffgaff account that will show >> https://giffgaff.com/dashboard
Be out of service while number transferring in to giffgaff account.