Why Battery Drain While Charging. Since it still says fast charging I would check both the connections on the cable. Even though most phones especially iPhones automatically push you to.

Since it still says fast charging I would check both the connections on the cable. And if its hot then this most likely is what will happen. Why Is My Battery Draining While Plugged In.
If you have the.
My iPhone 6S currently on IOS 1033 pretty much drains battery while charging. Smart preconditioning will warm up the cabin and it will also turn on the battery heater. It is usually pretty easy to test the first two if you have any friends with a newer Samsung LG Huawei or similiar device as most of their models come with Qualcomm QuickCharge compatible cables and chargers that you could test with. To check whats draining your battery head over to Settings Battery Scroll down to Battery Usage Tap Last 7 Days and here you can see which apps are using the most battery power.

