Since a couple of weeks i am having trouble using my powerbank to charge my phone. If my phone is low on battery and i connect it with either USB port, the charging is slow as hell. My phone shows me it will take 5-8 hours for it to be fully charged. Using the phone while charging will only make the battery go more empty and the charging take longer.
In the beginning i did not have any issue with it.
I tried the following things :
Phone factory reset ( no effect )
Connected phone to same model powerbank (same problem)
Tried different cable ( no effect )
Phone can be charged via original cable and wall-plug.
Somebody else got an idea ? I am running out of ideas....