I woke up this morning to find my iPhone 7 had not actually charged in the night like it was supposed to. Thinking the cable and become dislodged from the outlet, I checked both ends and found everything was where it should be. Upon unplugging the lightning connector from my phone and plugging it back in, I got greeted with the dreaded "accessory may not be supported" message, that lightning bolt icon flashing over the battery ever so fleetingly. Restarting the phone did nothing for it. I thought maybe I'd tripped over the cable at some point in the night and finally caused some internal fault in its braided beauty. That didn't seem to be the problem, however as I plugged in my iPad and didn't even get the "not charging" message I used to get when I plugged it into anything less than 2 amps. To further add to the confusion, I took the iPhone into my office where my iPad's charger is and plugged it in. Charged like it should.
Here's the results of my ensuing mix-and-match experiment. There's probably a better way to organize these data, but I can't think of one right now, especially since there turned out to be a time factor involved (that is, what would once work suddenly wouldn't).
Not noted here is the turnover. One of my favorite features about the lightning connector is being reversible. However, when I plugged Cable 1 into the iPhone charger, it first showed as working with the iPad. Then, I turned it around and that got me the "not supported" message. Turning it back around to the "working" side now suddenly didn't work at all, "not supported" message and all. So, I guess it's just an intermittent cable that finally bit it.
For further background, both Cable 1 and Cable 2 are third party. Cable 2 is a shorter cable that was provided by my cell carrier. Cable 1 came in a 3-pack from Amazon. Both are also braided, which isn't always a mark of higher quality, but certainly helps on the durability front, which often leads to cables failing.