How to switch on all iphone 7 LEDs in swift/objective c

Question

Similar question to this one but for the iPhone 7.

The iPhone 7 has 2 amber LEDs and 2 white LEDs. When you turn on the torch only 1 of the LEDs turns on. The amber ones turn on intermittently when using the camera in my app (I seem to have no control over this).

So I have 2 questions really:

1. Can I switch on both white LEDs on demand in Swift?
2. Is there a way to ensure the amber ones never switch on?

EDIT

I have already checked AVCaptureDevice and related (whatever is documented), so hoping someone there is someone who has looked under the bonnet and perhaps found another way.

Answer 1

There is no public API method that allows for controlling the exact LED operation on an iPhone. There is only a flashMode property available for AVCaptureDevice, with three possible values: on, off, and auto.