[Q] Xperia s buzzing noise during calls!

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Hi guys!

I'v had xperia x10 then Xperia arc and now i have xperia S

and this is happening only with xperia s, i get a buzzin noise during a call only when Im home!

Does any body knows where the problem is? And its only with Xperia S

i occured this problem too... mostly on 3G network (WIFI nope)

I dont have any problem on calling..

Even my friends say that calling using XS is much more clearer than calling using any other phones..

Maybe some hardware issue?

Sent from my LT26i using xda premium

I also have an Xperia S, and the problem happens with mine too, and also the volume of calls is lower than the other devices I had, I think it is because of the baseband or the radio version, my baseband is 8660-AAABQOLYM-314010-28, what is your baseband?