Sim800l module not responding

I have brought a new sim800l module as my previous one broke with a pin.
But all the modules i have…are giving me CREG=0,0 or CREG=0,2
I thought its a power problem…
but for i have my working code with MQTT and Sim800 l earlier with same arduino uno kit…

how to resolve this?

Make sure you are putting the same 2G SIM card as earlier. JIO wont work as its 4G.
Check antenna and the power. You need 4V @2A