-The ambient temperature plays a big role. -Usually mobile phones will get heated up while charging & fast charging will make more heat. so, to counter the heating issue your phone needs to be in a cooler circumstance. If the room temperature is high (< 33⁰c) then there's no chance to conduct the heat produced while charging. -SO TO REDUCE THE HEAT PRODUCTION THE PHONE ITSELF PULLS DOWN THE CHARGING SPEED. -(Samsung also mentioned that fast charging works properly between 10⁰c and 40⁰) In this hot summer usually your phone's battery temperature will be around 35⁰c and while plug in your phone will charge fastly for just few minutes (< 5 mins) then the battery will catch up the heat around 38⁰ - 40⁰c and your device pulls down the charging speed. . . . FIXES 1.Charge your phone in air conditioned room by keeping the room temperature around 25⁰c 2. Or if you don't have A/C then use a wet cloth (dip a cloth fully in water and squeeze it well) , wrap around your phone and plug in the charger by keeping under a fan.
Please perform the below mentioned steps to resolve the issue:
1. We always recommend to use genuine Samsung charger for charging your device.
2. Check your charging cable (USB cable) for physical damage such as wear and tear, bent prongs etc. If it is damaged then kindly visit your nearest service center to get it replaced.
3. Check charger functionality, try to charge your device with some other charger or use your charger to charge some other device.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > send feedback > error report/ask questions).
