Sony India — Mobile software got corrupted and not detecting SIM cards & memory cards after service from care

Address:

Udaipur, Rajasthan

My Sony Xperia C 2305 got hanged and failed to start. Mobile got stuck on SONY logo. I tried with the format options available in the boot setup and fail to format. I had taken my mobile to Sony care where they installed new software. after installation also they are not able to clear the complete problem. Presently mobile is not showing any home screen and menu options but all the applications are available on the mobile which is running background. And another major issue is IMEI gone invalid for the mobile.For which Customer care given a solution to change the Mother Board which costs me 7000/- INR. For a small software issue.How a mobile got corrupted in hardware. Why the complete board is to be changed when my mobile set was working perfect with other applications apart from Initial Booting setup