Battery life seems to be getting progressively worse. During 1st month of use, consistently got 30 hrs of usage with 4 hrs SOT; now get 12 hrs with 2.5 hrs SOT w 25% at end of day; same usage pattern. Clear cache every 2 - 3 days; no change. Have not done FDR. Cannot upload pix to FB with any browser: chrome, boat, dolphin. Dolphin & boat do nothing. Chrome fails with not enough memory error. Clear recent apps, clear cache, reboot - same signature. Checked permissions - see no obvious issues. Ideas?