The Fresh PHONE service is entirely dependent on the quality of the Internet connection you are using when making or receiving a phone call. Hence we only recommend connections that do not generally suffer from congestion or high latency such as FTTH (Fibre to the Home) or Fixed Home LTE.
Sometimes other connectivity types, such as ADSL, 3G, Edge, WiFI or Mobile LTE will work. However, we do NOT recommend relying on these connectivity types as they are prone to congestion and high latency which result in poor call quality.
To learn more about using WiFI and why it can lead to a poor experience - watch this video
To learn more about latency and how it affects your Internet experience - watch this video