Micro-usb and charging problems

Recently, USB charging system became an official USB standard.

We can get the information shown bellow.

http://www.usb.org/developers/

Battery Charging Specification, Revision 1.2 October 12, 2011

http://www.usb.org/developers/devclass_docs/batt_charging_1_1.zip

 But, the information of this is complicated,

We can summarize that  the USB charger is expected to shorten the USB data lines D+ and D-, and the charger capacity of 5V and of the current of >1000mA.
 It is neccesary that pin2 and pin3 of the Micro USB cable is bridged together for most Nokia and Samsung phones with the micro-usb.

One of examples is shown bellow. The usb extended cable is modified to shorten the USB data lines D+ (Green) and D- (White),

In Japanese, マイクロＵＳＢ　充電できない.