Hello, i have a great issue with my battery usage. Before the update(4.2.1) i had got 1% lost for about 10 mins, now on 4.3 i got 1% for about 5 mins. On standby for about 8 hours i had lost 3% with 4.3, on 4.2.1 0% lost. Could someone help me pls with some advices or something? Thank you in advance!