08-07-2017 10:55 AM
For the past couple of weeks fast charging doesn't seem to work anymore, if anything it's slower than it would be on a normal charger. Painfully slow, in fact. But it still says "fast charging" on the screen. I tried plugging it in my other Samsung charger (for the tablet) and it seems to charge ok, albeit at normal speed. Also, it would make a sound when plugged in, then another immediately after confirming fast charging, now it only makes the sound once and as I said, it does say fast charging, but it most definitely isn't!
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08-07-2017 11:37 AM
Your battery maybe on its way out.
It maybe worth contacting Samsung mobile support to see if the phone is still under warranty.