mikenitso wrote:
It's more about the quality of charge. A powered down iPhone is better charged when you turn it back on.
You're making this up. There is no such thing as "quality of charge;" charge is charge, and it makes no difference whether it is charged powered on or off from the battery's perspective. There is no such thing as "better charged" either; the battery is charged to 100% or it isn't. How it got there doesn't matter, and regardless of how you charge it the charge process stops at exactly the same point with exactly the same battery capacity. You can test this for yourself with a battery monitoring app such as Battery Life.
There's actually an advantage to the battery charging it powered on; the power source runs apps rather than the battery. As some apps (mail, for example) use power most of the time, if the phone is off they must wait until you turn it on to do their job. By then you have unplugged the power source, and the background apps must use battery power when running to catch up with what they missed when the phone was off, rather than "wall" power. This means that the battery will have to be charged sooner than if you left the phone on. And it will increase the number of charge cycles over time, wearing out the battery faster.
Regarding wireless charging, it is an active process from the phone's perspective, and I (speaking as an electronics engineer) don't see how it is possible to have an active process with no power going into it. So I suspect the the Apple support rep is wrong with respect to wireless charging, or the rep misunderstood your question.