It works perfectly on my iPhone 6. I had a preview offer and last week or so the sim got unlocked for all devices. Have been using it on my iPhone 6 without any issues. It doesn't show VOLTE written anywhere (reads Jio LTE instead) but you can make and receive calls just fine without any need to use Jio4GVoice.
@Dhiraj
Unlimited offer activate ho jaaye to batana.
Was ther
Was there too much rush in those shops
SIM is issued on offer code and the offer code is generated based on your IMEI number. The SIM you have got is locked to your IMEI number(of the device you used to generate offer code)If you get a jio sim issued under the Samsung preview offer code on one device, can you activate and use the same sim on another Samsung 4G phone?
Has anybody tried this?