Sony India — mother board damaged

Address:

Kollam, Kerala

I bought by phone (SONY XPERIA ST26i) on June 17, 2103.The warranty period is over 3weeks back.My phone was having problem for the last 2 weeks.It was getting heated.Now it is shut down.I am told that the mother board needs to be changed.This is expensive.I have already bought the phone for Rs 14, 490 and within 1 year i cannot spent another Rs 7000 again for the board.I am sure this is a defective piece and the company should be replacing me with a new phone. I have used cheaper phones of other brands and no such complaints have ever come up. I regret buying a SONY handset.