Perhaps this has been mentioned before, but this happened to me and I thought I'd share. My lightning cable seemed to charge my iPad okay, but not my iPhone. I'd always have to crimp or angle the connector to get the charge icon to appear. I was perplexed. I then noticed there was a physical sounding click with the iPad when I plugged the lightning cable in. Not with the iPhone. This led to the realization of how much lint had gathered up in my iPhone's lightning port. I simply used a wood toothpick and gently picked the lint and dust out. It's all good now. No need to buy another lightning cable.