problem with ear speaker

[abbadi]

hello.

 when i make a call i hear some shshshsh in ear speaker . is that normal too it not very high sound but its still there ..

but when i use my headset i didnt hear shshsh sound . its new phone i just bought it yesterday .. is that normal or i go back to store to fix it .. its not very high sound but when i focus i hear shshshshsh in ear speaker 

[Uliwooly]

It could be a poor network coverage

[abbadi]

no i have very good signal 

[Uliwooly]

@abbadi

How old is the SIM card? is it the correct size?

[abbadi]

 the problem at number 2 look at picture when i speak i hear some shshsh..

the sim card new and its very good too problem with ear speaker i think i want to know its normal or not becouse when i use headset i didnt hear that shssh sound .. 

[diecast]

i have this too and my phone is 4 months i have a brand new sim card and my network is good! Its a software or a hardware problem, go to a service center dude!

Spoiler

[abbadi]

i think all mobile like this sound i try anather z2 the same sound