A reader has an issue with his phone’s battery readings. “My Samsung galaxy S3 seems to have two battery indicators one that stays near zero charge one that will charge to near 100% after 30hrs,The near zero seems to dominate dying after minutes, I’ve purchase 2 Samsung batteries online but neither has affected this issue. On line options include resetting some battery file while others opine this will do no good, what now… the phone is only 14 months old. The battery indicator appears before the phone is booted up, this distinction make it impossible to take a photo of the indicator at zero, but the dual indicators I referred to do no appear at the same time on the screen… at first glance I get and indicator at zero or a very low power percentage mere seconds later I get another
indicator with different status.”
We’re going to look at a few options here. So read through them all to decide what will work for you. You may not have a battery issue at all, but an adware issue. I had the same thing happen to me. A battery charge lock screen just appeared one day. Here’s what mine looked like. It even featured ads.
This particular adware gets onto your device by piggy-backing on an app you’ve downloaded or with some updates to another app. That’s why it’s always a great idea to read those app permissions, even on updates.
Fortunately, for the adware, I got stuck with, you can tap the settings icon at the top and actually disable the lock screen indicator.
If you downloaded an app about the time this extra battery indicator appeared, I’d go to the App Manager and uninstall that app. See if that helps.
Also, check App Manager to see if you’ve purposely downloaded any battery monitoring apps. That could be why you’re seeing the dual indicators.
The battery indicator you should trust is the one displaying at the top of your phone.
I have heard reports that Galaxy S3’s can experience excessive battery drain. To help curb this, you may want to make sure apps are closed in the background and consider turning off location services unless you need them.
Consider changing the sync settings for some of the accounts on your phone. Go to Settings, then choose Accounts. You can tap each account and make adjustments to how often it syncs with other accounts.
For example, I can have my e-mail only download on a certain schedule or my calendar not continually sync with social media accounts. This can help conserve a great deal of battery power.
I hope these options help.