WiFi & 4G Calling

O2 Launch of WiFi & 4G Calling

WiFi & 4G Calling now available on O2 WiFi & 4G Calling launched April 13th 2017 for O2’s Bluebill customers.  Here’s a low-down of the details: Wifi and 4G Calling will allow you to make and receive calls over WiFi even if youcan’t connect to the mobile network. And you’ll be able to enjoy clearer calls with 4G Calling. Both at no extra charge. At launch, only the iPhone 7 …