I bought sony live with walkman 1.5 years ago.The performance of this product is good .But from few days back i got a new problem regarding the touch functionality.Some part of the screen is not responsing.Please help.
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I suggest that you try to reinstall the phone software using Update Service..
Before reinstalling your device you may want to backup your information first. Check out this topic for more information on how to. How to backup?
If the issue should still remain I think that this needs to be examined and fixed at a repair center. For more information about how to submit your phone for repair and where, contact your local support team.
