Xperia z ear speaker problem

[paNix]

Hello everyone, 

I'm so upset about my xperia Z because in last of 2 weeks the ear speaker disturbed me, i can't speak like a normal person so need to push the speaker button to can and to stay with the phone in front of me... I need to mention that speaker is in good standing because sometimes is working but when i have a discussiot outside is bad.. to walk and tolk with font in front of you.. What to do in this case? Need

[paNix]

The problem is back with update lollipop 5, i can speak very rarely on ear speaker, only on big speaker (right corner speaker)

[paNix]

Hi, i hope you can help me, i have a problem with ear speaker, it doesn't work only when it want, i can't speak with another person in a lot of cases only with the second speaker(corner), what to do? The second problem is that the screen doesn't turn off even if 15/30/60 seconds have passed... i need to mention that iti ticked 30 seconds but nothing after 30 seconds the screen still ON, what's happening? (xperia Z, lollipop 5)