I upgraded my Verizon S4 from the MJ7 update to the MK2 update about a week ago. Prior to that I was able to get my vehicle charging issues resolved by buying a better cable. Now, with this update the charging issues are back. Before with the smaller gauge cables it wouldn't charge at all. Now it charges, but at so slow of a rate that with the screen on the battery slowly discharges, even with a 2.1 amp adapter. I'm also getting a brand new message that it would charge faster with the original Samsung charger (something I was never given for a vehicle). How hard can it be to get something as simple as charging the phone right?