Micro USB will not work on new phone

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http://androidforums.com – This week I finally purchased an android phone, Alcatel Venture, a low cost entry phone. I am extremely frugal. My last phone was a tracfone with a micro usb charger. I have plugged this new phone into both of the chargers (auto and home) and they are not charging, Radio Shack guy told me that all usb chargers are alike. Why do the older phones chargers not work with the new phone. Old phone was an LG. (General)