No matter which charger i use (1A , 2A, original, not original and whaterver) I get a notification that tells me that i use slow charger and i need to use the original charger. Even when i connect my m7 to my computer with usb it give me that annoying notification, it's like he thinks my computer is a charger and because of that my computer doesn't recognize the phone and i cant do s off or root and that kind of stuff to repair it because i'm pretty sure it is a software problem (as i said, they formatted the phone).
I tried to reset the phone from the setting but so far nothing..
if it helps, no matter which charger i use it always charges at the same speed (the phone limits the charger or something)
I'm sorry for my bad english :S