You will need to replace the lighter assembly, it was never designed to power mobile phone chargers. On later vehicles they are now fitted with power outlets instead. Firstly buy a new lighter assembly and see how it is retained in the fascia panel, the panel is normally held in with a couple of torq screws beneath the lift out ashtray bin. Refit in reverse order and admire your handy work...Best of Luck..
Keith.H
February 2007