Calls are bad free calls are not worth it if you can’t talk.reliance jio app bundle has an app named join-now called jio4G voice that allows you to make voLTE.just like WhatsApp calling.we tried both.jio4gvoice was mostly good the voice quality dropped at times but it wasn’t bad enough to be unusable.whatsapp calling wasn’t pleasant experience.there was a noticeable lag during the call breaking voice also something we noticed quite often during the WhatsApp call.t he issue is very real and consumer do suffer for this.