I have the same problem - "Vibration Loop" and phone not recognizing a wall adapter, however it charges fine when plugged into a PC or Laptop USB port.
I called Samsun tech support. A tier 2 level engineer showed me a way to fix this. Steps as follows:
1) Go to SETTINGS / MORE and select "About Phone"
2) Scroll down to find the "Build Number", and even though it appears it is an "information only" field, tap on it seven (7) times. you will see the phone mode indicate "Development Mode".
3) Pres the back arrow to return to Setting Main Menu
4) Select "Developer Options" from the menu.
5) Find "USB Debugger" and select it (click the check box)
6) Now try your phoen on the wall charger., it should work
You can then return to "Developer Options" and turn "Development Mode" OFF, it will continue to work OK, but it the problem returns keep these instructions to correct it.
Good luck, hope this helps all of you experiencing this problem. Maybe the manufactuirer will have a patch for it sometime.