A7 (2018) Facing slow charging it took 2 hr to charge from 40% to 100% and take 35 min to charge from 80 to 100 with original charger and cable also tried fast charger with 2.0 amp of samsung but only little difference. This issue was came after android 10 in march and also second update was came but problem was same
Go to service center and downgrade your device to Android Pie and then don't update only this Solution helps you otherwise wait for buggs fixes which I think didn't come
Please perform the below mentioned steps to resolve the issue:
1. 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.
2. Check charging, if rating is 15W or above. Kindly try to charge the device in a non-inverter socket.
Note: Kindly open Device care from Settings > Battery > Please tap on 3 dots(more option) at the top right hand side > please select settings > enable fast cable charging.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
