O2

Hi i just upgraded to a device from sim only and not sure if the handset is for me and was thinking about exchanging the phone. If i was to return the device how does it work? Would a courier swap the device for me? Or would i have to wait for o2 to ...

Hi just joined o2 on a sim only and had my number transferred over today. Just trying to enable 4g calling and WiFi calling on my iPhone which just keeps coming up with go to o2 website to enable. When on my o2 I can’t see any option to enable 4g cal...