Over all everything is fine. It's working fine in Jio sim. Super fast internet. Really a Big WOW. But the same device is available in http://www.airtel.in/4g/hotspot/ website for 1950 only.
Product good. Works with any SIM. But it always shows green color indicator. When it connected to 2G(Red) or 3G (Orange) it shows green light which symbol of 4G network.