Fido

Its something to do with FIDO. They are blocking the SIM from registering on any network. I had the same phone and SIM when I was visiting India in May 2020 and It was working perfectly fine then. 

Which phone do you use? My brother is using an iphone and he gets Airtel network. I use a Huawei P20 android phone and it does not show any network.

Please let me know how this was resolved. Thank you!

Please let me know if this issue was resolved. My fido sim was working for a couple of days and was registered on the Indian Airtel Network but now its not working. When I try to connect manually to the airtel mobile network it  says forbidden. Pleas...