Why is my Samsung S4 start dying quickly all the sudden?

[AC Question]

I've had my Samsung S4 almost for 1 year and i never had battery problems. All the sudden my SS4 takes 6 hours to charge and it will at least stay away for 8 hours, now im not a noob and i know that this isn't normal. I have tried removing the battery but no luck, restarting my phone to see if anything changes, uninstalled most of my apps because i only use my phone to talk and message. I have checked my Battery and to see whats causing the most program to drain my battery. The number one is Android System at 31% and then Android OS 16%, Samsung Push Service 7%. Why is my Android System using so much battery? Well i clicked it to see more details and i saw the included packages and i'm like i don't even use this? Please help me. I need my phone for work and if this continues then i will have to switch and i don't want to because I've been with Samsung for a long time now and i don't want our friendship to end any time soon. By the way this has only been happening for 2 days now and also could it be the battery? but i doubt it because its the first time if seen the Android System presentage so high.

 

[belodion]

I've seen Android System and Android OS highest in my battery stats on several occasions, but have found that soft resetting usually fixes it. Have you tried a Cache Partition wipe?

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