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USB Charging problem since upgrade to 4.2.1

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http://forums.androidcentral.com – Every night, I plug my phone into my laptop to tether (can't seem to get bluetooth to work). Since upgrading to 4.2.1, my phone says it is plugged into USB & Charging but yet it is actually discharging. It seems that it is discharging slowly. I'm thinking that it is charging but not as fast as it is using the power. Settings>Battery shows Charging (USB) but "Battery Monitor Widget" says it is USB plugged but Discharging. Shows Estimated: -200mA (HowTos)