I gave my husband my old iPhone 6 last year after I got my 8. He's pretty rough on things, works outside. He's had trouble charging it and from what I can tell it's the port on the phone. It doesn't make that nice "click" when the lightening adapter is engaged in the port. I've tried compressed air, a soft toothbrush, and a toothpick. Is there anything more I can to do clean it out? It's really getting aggravating...mainly because he's aggravating ME! LOL! I do have a battery replacement on order to get his replaced at the Apple store, but they are telling me it will be several weeks. I do plan to have them take a look at it then if no one has other advice for me.