Gsm sim 800L net is shorted to ground

My module isnt connecting to network it is blinking

When i check between net pin and ground it seems to be short circuited. Please help me thank you in advance

What is net pin, do you mean netlight?

no antenna and ground pin

sorry for the late reply sir the ground pin and antenna is shorted
it is shorted in 2 new boards
i bought them from different sellers