Samsung Galaxy S5 does not read my operator's sim card

Question

Good evening, I have a samsung s5 I took it to the technician to change the load pin, now it does not read the sim card of my operator, in the technical service they do not give me solution, I read that if the pin is not the correct one for the model or has factory failure could cause this problem. Is this true? By the way if you read sim from another operator.

Answer 1

If he was liberated, he may have lost his release by touching him, it is very rare, although the technical service should take care of the problem ...