Originally Posted by
comiken205 If you are not using an Apple cable to charge your phone you will get that message.
This is not always the case. My fiance' uses a 3rd party charging cable (just a plain black cable he bought from Amazon) in his home office. There's never been any charging issues or errors while using the cable, and it charges the phone at the same rate as an Apple cable. However, it does not work with iTunes.
The 3rd party cable that I use (it's rose gold and matches my 6s) works with iTunes and charges my phone just fine. I've never had a single issue with it.
When using a 3rd party charging cable the mileage will always vary from person to person.