fast charging not working

Please help

maybe cable or charger in faulty. or power supply. if problem is with cable or charger goto service center

Thanks for being with Samsung and for sharing your concern. We would like to inform you that handset is enriched with most powerful features. Performance of battery depends on various factors; any third party application, software glitches may cause trouble. Kindly follow below mentioned steps to overcome the issue.
1) Go to the device settings > device maintenance > battery > advance > connect as fast charger.
2) We recommend you to charge your handset with original wall charger that came with your handset sales pack.
3) Kindly clean the charging point of your charger with a dry and soft cotton cloth to remove unwanted accumulation of dust/waste material.
4) You can also check the charging process while device is in switched off mode.
5) We also suggest you to charge your handset with alternate Samsung Approved charger to exclude the possibility that current charger is not the root cause of failure.
After doing the above procedure, kindly restart your device and check the performance.
If still issue persists, we request you to operate the device in ‘Safe mode’ as steps mentioned below:
1. You need to restart your handset by pressing power key.
2. When Samsung logo appears on device’s screen, long press volume down key and keep on pressing it for a few seconds.
3. You will see a safe mode label at bottom left side of your handset that implies that safe mode is enabled in the device.
4. To exit safe mode, kindly restart your device.
5. Note: In safe mode, 3rd party application will be bypassed and handset will work with default applications only. From that, it becomes clear whether it is an issue of the handset or the problem is due to any 3rd party application.

6. In case you are facing the same issue, even after following the above mentioned instructions, then please take back-up of important data which is saved in your phone internal memory then perform “Reset”.
7. We recommend you to take back up in your PC. Kindly install Smart Switch software in your PC from the below link:
http://www.samsung.com/in/support/smartswitch/
Open soft ware >back up>back up all> select data according to you.
Reset setting: - Settings >General management > reset >Factory Data Reset.
In case, the issue still persists in your device, we request you to share device log files using error report option via Samsung member application i.e. Samsung member app> feedback>question /error > attach log file.

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