Dear Francisco,
I've no desire to engage in a handbags-at-dawn exchange with you, and I'm "happy that you're happy" but that does little to enlighten us. Apple, I'm told, does not allow access to RAW data for the telephoto lens, only the wide-angle. I've passed on info communicated directly from 2 developers via personal email. I've given you the date Apple effected the restriction, it seems abundantly obvious that that limitation still exists. Your post above just confirms this and repeats what I've posted above.
Some developers have circumvented these limitations ( and I agree that the reason 'why' re the EXIF data is not immediately apparent). Moment adheres to Apple guidelines - try zooming in RAW and you'll get a message 'zoom not supported in RAW capture". (see attached)
Others have bypassed restrictions by using a jpeg as well (?) . Halide call it smart RAW. What exactly is involved I dunno, for sure it's not pure RAW as we been accustomed to and of necessity the shot has already been demosaiced .
If you have factual info to contradict this please educate me - I'll be grateful.
My proof is the DNG files generated by the LR camera. Here is an example, but just in case these images were taken with a iPhone 7 Plus with iOS 12.2 and LR v. 4.3.0
1.- I took two images with the 6.6mm tele lens (should be called normal), one straight and the second with a 200% zoom and here is how they look in LR
First image - no zoom
Second image: 200% zoom
Note that both images have the same size, and the second shows a smaller "Cropped dimension"
2.- When I go to the develop module and open the crop tool you can see that all LR does when zooming is applying a crop, nothing else, and that's why you don't receive the warning in LR
Now is it an undemosaiced raw or a linear raw?
First evidence: Open the image (the zoomed one, but it would be the same with any) in RawDigger and the EXIF shows "Parametric Interpretation: Color Filter Array". You will not get this message it it were linear raw
Second evidence: Open the image in RawTherapee and go to the demosaicing tab and it shows "Sensor with Bayer Matrix" and you can choose the demosaicing algorithm of your liking. Try to do that with a linear raw
So. Yes, LR Produces a UNDEMOSAICED RAW from the iPhone tele lens and zoom is just a CROP (Metadata), it does not affect the raw image.
I don't know if Adobe has any special agreement with Apple, but this is real, try LR if you don't believe me.