I'm using Samsung Galaxy S5 and usually charge through USB port of Dell Inspiron 14z laptop. I know that USB charging is slower than wall charging. But USB charging becomes much slower than usual recently.
I recently replaced the charging cable and the battery. Thus the problem must be in the USB port or the laptop itself.
What could be the reason of this phenomenon and how can I solve it?
The problem can be in the cable itself. Most of the third party cables are not capable enough to transfer enough power to charge a device in a certain period of time. A branded cable may not have this problem. What type of cable did you buy? Have you checked its power specifications before buying it? Also, I don't think that there is a problem with the phone's battery. If there was, you would be facing a whole lot of different problem than this one.
