If your charger is two pieces - 1 USB cord and 1 Wall plug, take the USB cord and plug your phone into the computer with it to see if it charges that way. It will be VERY slow, but that can help you rule out part of the problem.
morrolady, we want you to be able to charge the device when you need to. Does the charger work on other iPhone 4s? Is there any debris in the charging port? Keep us posted.
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