Hello, I also confirm that we must try the cleaning in the connector, perfect toothpick, soft wood that will not harm the components. My iPhone 5 no longer took charge and / or occasionally. Like many, I thought of the charger "out" or problem of the connector. My post if it helps: After cleaning and removing a lot of dust, he still did not take the load. In fact, I just had to make a real reboot of the iPhone, not just turn off and turn on. You will easily find on the net a post of how to do. Since then, he resumes the load normally.