[Q] HELP!! Nexus 4 cannot get charged!

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http://forum.xda-developers.com – I just got my nexus yesterday, I was too happy and play until power off itself. After that, I can't get it charged! The phone can boot while plugged to wall, and all functions work well. But when disconnected, it will shut down itself. I downloaded battery monitor widget and found that charging current is less than 10mA, sometimes even drops to be negative. Can anyone help? (HowTos)