iPhone 7 Plus unable to charge using apple approved lightning cable

It could be that a particular cable is marginal and the problem only shows up with one particular device. The cables can have internal damage as a result of flexing. My wife did that to an OEM Apple Lightning cable by pulling on it all the time where it was bent almost at a 90º angle most of the time.

While I don't have a solution, I thought I'd chime in and add a "+1" to this, as I'm experiencing the same thing. After upgrading to iOS 11.2.6, my iPhone 6s Plus has had issues charging. I've tried:

• original Apple cables
• verified third party cables
• third party dock

All worked before and all currently work on other Apple products that weren't upgraded; so I doubt it is the cables and dock. Not matter what I try, the experience is this:

• There is no chime when I connect the phone for charging, as there used to be
• The lightning bolt icon that used to appear next to the battery icon no longer appears
• If the phone charges at all, it charges VERY slowly; leaving it connected overnight the phone will go from 1% to 25%
• When at 1%, it stays at 1% for a VERY long time (hours)

I suspect this may not be a battery or cable issue, but an issue with iOS correctly reading the battery's charge; for example, it displays 25%, but the battery may actually be at 100%.

So again, my apologies for not offering a solution, but just wanting to add my voice to the issue.

I use plenty of MFi cables made by 3rd parties, but I'll avoid ones that aren't. I remember using one when my MacBook Pro completely froze up and would only recover when I pulled the battery connector.