Battery capacity reduced.

[xmnsk]

My battery capacity reduced from 3000mAh to 2800mAh within 7 months of usage.

I checked it under service test menu. Is there anything that could be done about it?

[Uliwooly]

That's rather odd, you might want to contact your local Xperia Care

http://support.sonymobile.com/global-en/contactUs/