Hi, I have this issue where my phone charges fine when I initially plug it into the charger, but when I check on my phone later it charges really slow. So one day when i was charging the nexus 4 i decided to check the battery settings and it said AC and the phone charged fine.. But when I checked after 5-10 mins the phone started charging really slow and when I checked the battery settings again it says USB. My phone charger is plugged into the wall and I'm using the charger that came with my phone. What I did find out was that when I unplugged my phone and reconnected the charger my phone charges fine all the way. Do you guys think its an issue with the charger or maybe the phone? Should I contact Google about this? Or is there a solution to my issue?