
A critical need arising for 4G- and 5G-only operators is the ability to connect to operators that neither have VoLTE nor any plans to integrate it. Without, 4G- and 5G-only operators stand to lose a significant amount of their roaming partnership business, since most operators still do not support VoLTE.
Evolved Mobility from Syniverse allows 4G- and 5G-only operators to support 3G fallback for voice calls so that these calls could be made via VoLTE. This unique offering enables users on non-VoLTE networks to seamlessly make VoLTE-powered calls.