Why do I need to make changes to my IMS settings? February 17, 2023 07:33 Updated This will ensure that you will be able to make high-quality voice calls via VoLTE in SIMBA’s network. Related articles What is the APN Setting for SIMBA? How do I enable VoLTE? Why do I have to dial these numbers to disable carrier & select SIMBA as a carrier? VoLTE FAQ Video What are the supported devices?