I was able to solve this same problem with my iPhone 6s by restarting the phone. It was not the solution I was expecting, but after trying different chargers, computers, and USB hubs, this is what ended up working.
I was able to solve this same problem with my iPhone 6s by restarting the phone. It was not the solution I was expecting, but after trying different chargers, computers, and USB hubs, this is what ended up working.