Originally Posted by
PainFX When you pull down the notification bar and it says "searching" or on the top of the phone it has an icon, "O" with a slash in the middle, that means you don't have reception or no service. If you got your mobile data turned on during that time, LTE is stressing out to get signal, hence the drain..
Here's the thing- mobile data is turned OFF. All of this talk of turn this off, turn that off, disable bloatware, this, that, the other thing is meaningless. This problem has nothing to do with that. All of that stuff has been running since I bought the phone, I never had any battery problems, and all of a sudden within the last two weeks, the phone went into a state of massive battery drain. This phone is still in its factory state. I have installed no apps, nothing. I have a Samsung S3 as well, which has a weaker battery since it's been used 1 1/2 years longer than this new phone, and it will sit, with WIFI on, and everything else on too, GPS, etc., and it lasts close to 4 days, just like this S5 used to. Now, I cannot even go to bed with less than 60% charge or it will be dead in 8 hours time. "Android System" is the culprit, and I have no idea why. I found countless other posts on other sites about this exact same issue, and nobody has found the cause, or a solution. It is an operating system issue. Despicable and unacceptable for such an expensive unit.
Oh, and I should mention that this has nothing to do with the Samsung, because it's across all android based phones.