I am facing a battery issue. The charging time is increased to 4 hours with battery care is off. And discharging time is decreased withing 4months of purchase. When handset was new it gave me 2days with complete usage. But now a days it doesn't even long lasts for 12 hours! I visited service centre for this issue but return the device after 4 days saying "no problem found" plz help me or else I have a trust issue on Sony.