bottom speaker

[brendin]

Hi,
It's being twice now that I have faced this problem with my Sony experia Z2. The bottom speaker disfunction is annoying.. The bottom speaker suddenly gets off or dead and there is no sound at all. It's only the ear piece speaker which is functional. I need to restart my phone n then both the speaker functions the bottom n the earpiece. But I miss my calls due to this bottom speaker disfunction..
Kindly give me a feedback as to why this problem has occurred...

[Thommo]

Without having the device to test I would 1st say it's an app issue that you have installed that could be taking control of your speaker behaviour

[Sam]

The next time it occurs I would advise running the diagnostics to see if we can narrow down the cause of the issue:

1. From your Home screen, tap the Application screen icon. 
2. Find and tap Settings > About phone > Diagnostics. 
3. Swipe left or tap Test. 
4. Select what to test or tap Run all to perform all tests. 
5. Follow the on-screen instructions. 
6. If the test indicates any potential issues, contact a Sony Mobile repair partner to receive a quotation for a repair.