Reliance Jio will be primarily banking on Voice over LTE (VoLTE) technology for voice service through its 4G network. However, not all 4G devices available in the market will support this feature, and some phones may need a software update to enable this. Here’s the official list of VoLTE-enabled smartphones that are supported on Reliance Jio’s 4G network  Reliance Jio will be primarily banking...