I see that you can earn avios by taking out a new contract with O2 (assuming that the tracking works!) Only applies to new customers and not upgrades...now I am retiring in 2 months and have to hand back my O2 work phone and want to port my number over and wonder if I would be considered a new customer (As a personal customer I believe I am) but because my current phone is also O2, albeit a business account, is it considered an upgrade?