Chosen Solution
The Fast Charge feature does not work on my Galaxy S6 anymore. I tried different cables and adapters with Fast Charge support, but my Galaxy only says “Cable charging” and not “Fast charging”. Hope that someone can help me.
I would update the software on the phone first thing then purchase a new complete fast charger like this in retail box so you know it is oem samsung charger http://www.sfelectronics.biz/not-7-samsu…
I have the same thing I replaced the motherboard and it fix it
Ensure that Fast Charging is enabled in settings. To do so you must go to Settings>Power Saving> Fast Charge and make sure it is checked. If that doesn’t work then clean out the charging port. If that still doesn’t work then try another cable. The cable should be thicker in shielding. Ensure the cable isn’t frayed, bent or damaged in any way. I find in my own experience that charging cables over 3 feet long tend to be shoddy at fast charging. Ensure your charger brick actually works by charging another device.
