cannot hear using earpiece speaker during a call.

[Kish0]

Sometimes earpiece speaker stops working after which I use a earphone or on loud speaker mode to attend a call. This happens and fix itself all of the sudden. How to fix it permanently ?

[Uliwooly]

@Kish0

Hard to tell, but repair the phone with PCC, if that solves the issue then it was an app acting up 

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

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

[SophiaW]

Hi Kish0, 

I agree with @Uliwooly - here are further steps on performing the repair with PC / MAC.

Running the software repair on PC Companion:
1. Install and open PC Companion then select Support Zone.
2. Phone Software Update.
3. Start.
4. Repair Phone
5. Continue
6. Accept data removal
7. Next
8. Wait for prepare
9. Select Phone
10. Follow the connection steps

Running the software repair on Bridge for Mac:
1. Launch Bridge for MAC without the handset connected.
2. On the Main Window select "Xperia > Repair Xperia
Device".
3. Ensure the phone is charged and select "Ok" in the
following window.
4. Select Continue on the following page.
5. Wait until the initialising step is finished the
continue as below.
6 . Select your model of phone from the list that appears
7. Follow the connection steps that appear, ensuring that
you are holding the relevant button down before during and
after the connection phase until the update/repair begins.

Hope this helps! Keep us updated.

[Neil68]

THE SOLUTION DOES NOT FIX THE AUDIO ISSUE? Sony's update has ruined my phone. Please fix this immediatel.

[SophiaW]

Hi Neil68, welcome to the community!

Am sorry to hear that the software repair hasn't helped, in this case I advise contacting your local Sony Xperia Customer Care team as you may need to get your phone assessed at a repair centre.