One the PAC code has been received, it is O2's jobto advise you when the
migration will happenthis will take 4-8 hours and involve several phone
restarts (Phone should receive O2 calls and make calls anywhere at this
point)advise all other networks w...
HiCan I recommend that you Get an O2 SIM (PAYG, Rolling or
Contract)Install MyO2 app on your phone, And Create an accountVisit
visit https://o2.co.uk/keep-your-number-formI am actually going through
this process now, moving from GiffGaff to O2
