Background hissing when on a call

[staking]

I just got a new sony z3, really like the phone, however major problem, im getting really bad static hissing in the background, really anoying.

Had the orginal sony Z before and that didn't have any issues with the calls.

Is this a faulty handset? i haven't changed any sound settings in the phone.

[Uliwooly]

@staking

could you boot on safe mode and check again?

also, are there electronics near you?

[staking]

hi just tried booting into safe mode, hissing still there.

[Uliwooly]

@staking

Any electronics near you?

[staking]

there was my laptop, so i went into another room, hissing still there.

im going to install call recorder app, to see if it will record the issue.

[Uliwooly]

@staking

Settings > about phone > status > signal strength > what do you see? 

also, how old is the SIM card?

[staking]

signal strengh

-85 dBm 14 asu

HSPA

same card is about 2 months old.

ive got the recordings done,  done recording in wav, 3gp, amr,  strangely the wav doesn't record the hissing, the other 2 formats do show it.

[staking]

3gp format - https://drive.google.com/file/d/0B45mprtR2Z0zWlRrdGY4ZW9RVW8/view?usp=sharing

amr format - https://drive.google.com/file/d/0B45mprtR2Z0zMlZKTTdqWWtQZ2M/view?usp=sharing

wav format - https://drive.google.com/file/d/0B45mprtR2Z0zY2VZc3g1ZXFXREE/view?usp=sharing

[staking]

just discovered when playing music tracks back i hear the hissing as well, from the earphone speaker,   its as if the bass is set to high ?

[Uliwooly]

@staking

That's rather odd, you could repair the phone with PCC but I'm not sure if it'll make a difference.

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355