Samsung — Mobile phone m31

Address:

C/O. THE ORIENTAL INSURANCE CO.LTD.MAIN MARKET, BILASPUR, H.P. 174001

I purchase m 315f/ds model of phone in may this year. But now
its incoming call speaker has become low in volume and it is difficult to hear the caller.

Hand free speaker is being used by me.

The same problem is also being faced by son who also purchased this model.

It seems the company is not using good technology.

U r requested to resolve the issue.