I am using SIERRA WIRELESS 1400338 REV 2 with Sierra Wireless Airprime MC7304 PCI Express Mini Card , but unable to attach it over the airtel LTE network.
Airtel offers 2300MHz TDD-LTE (band 40) and 1800MHz FDD-LTE (band 3)
MC7304 is supporting all the technologies , hence LTE is there, and even band 3 is also supported by it, but still unable to attach it over the network.
Tried running AT command : AT!GSTATUS?
where it was showing band 0 and showing no service.