[Resolved]  Micromax Informatics — Smartphone Micromax Evok (E483) Sim not working (cellular network not available message)

Address:	Dakshina Kannada, Karnataka, 575008
Website:	micromax

This brand new phone is gifted to me by my daughter on 17th of this month, unpacked box, though purchased through Flipkart about one month back. After inserting the sim (Airtel), started receiving the message "cellular network not available}. Sim recognized by the phone, but not receiving signals. I tried changing sim slot 1 and 2, but nothing happened. I took it to service center, and as per their advice, I changed the sim and got a new sim. it worked for about 10 minutes and again not working. If I change the slot, (Micro to Nano, since the sim is compatible to both) it works with week signal for a while and stops working. Factory reset is also done and tried with other sims also without any results. Any solution?