VoLTE and VoWiFi on Giffgaff:
On O2 and other networks: pay monthly customers have access to both 4G Calling and WiFi calling.
On Three: pay as you go and pay monthly customers get 4G calling and Wifi calling
On Giffgaff: no customers get 4G Calling or WiFi calling
This needs to change; Giffgaff pay as you go customers want these services.
It would benefit Giffgaff itself by making PAYG customers move to Giffgaff for 4G Calling and WiFi calling. And also being the first network with these for PAYG customers. It would benefit members by having the ability to call over WiFi if they didn't have service and have HD calls over 4G.
It should be implemented: for one members want it, two it would be easy to implement because O2 have it and three it is good for everyone.
What needs to happen:
The O2 VoWifi Server [epdg.epc.mnc010.mcc234.pub.3gppnetwork.org] (which has multiple servers) needs to allow giffgaff numbers.
Give giffgaff numbers access to VoLTE through IMS gateway