If your iPhone 5 was previously charging fine and now it is not charging when plugging it in, there are several things to check:
  • The connector on the phone or charger - is it dirty? Try cleaning it out will a small brush
  • Try plugging the phone into your computer, let it sync then back into the wall charger cube
  • Reboot your phone and then try again
  • Reset your phone - Hold down the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears.
  • If none of this works, replace the cable and charging cube - if still under warranty Apple should do this for free



See More: Why won't my iPhone 5 charge?