Apple says that its wireless charging is compatible with Qi chargers. A great deal of Qi chargers stop charging when the phone is detected as fully charged to avoid over-charging. If 'apple approved' chargers behave differently then I'd like to know exactly how - and I'd like to understand whether or not that is even a good thing to not stop charging when fully charged.
If apple chargers DO behave differently in concert with the iPhone's chipset to avoid overcharging, then again I have to ask 'why'? I'd also maintain that Apple's claim of Qi compatibility is fraudulent; since it doesn't work the same as it does for other manufacturer's phones.
And the answer is most likely 'So Apple can charge licensing fees for their 'approved' designation.
Whether or not you agree or disagree with ANY of that, or whether you have some more detailed information that better explains this problem...
when Apple claims it is compatible with something; which is a deliberate marketing decision to INFLUENCE PURCHASE DECISIONS... and as a result a great number of users get super-annoying 'beeps' during the night - or 'buzzes' if they have phone silenced - then those folks have a legitimate reason to seek answers and solutions.
Talking down to them and being dismissive in a help forum is bad form. If you are too self-important to suffer people asking for help then unsubscribe and/or go away.