I have just changed contract to ID from Vodafone. I sent ID the PAC code to switch to old number today. The number appears to have switched on the new ID phone but is still active on the old Vodafone one too. If someone calls me it rings the Vodafone mobile not my new ID one, however I am able to make a call from my new phone and the recipient sees my switched number correctly.
Why is this? Why has the Vodafone one not switched off completely?