14-04-2016 08:54 - edited 14-04-2016 08:58
Hi @Anonymous You can upgrade via My O2 http://www.o2.co.uk/myo2
Or by contacting customer services http://www.o2.co.uk/contactus
Further info here http://www.o2.co.uk/help/pay-monthly/upgrading-your-device (if pay monthly..
14-04-2016 08:55 - edited 14-04-2016 08:56
on 14-04-2016 10:13
You might save a lot of time and sress by going to your nearest O2 store.
on 14-04-2016 18:58
Legacy tariffs are gone if you upgrade. The only way to keep that tariff is to buy a phone outright and simple swap. Even legacy tariffs are now subject to change ie the unlimited data tariff is now subject to a FUP of 4GB.
on 14-04-2016 20:36
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)