A mobile phone is not a 'luxury' - it's almost an essential good these days.
Even without that, an iPhone doesn't meet the criteria of 'luxury good'. It's just a little more expensive.
Android and iOS have an important market locked down, it's time for some basic regulation.
I have a 200€ xiaomi phone (redmi note 4) that works very well and I have little to no complaints.
An iPhone costed 4-5 times that amount when I bought my phone, and does essentially the same things. But it's shinier.
Yes, the iPhone is a luxury good.
Edit, just to clarify: I have used an iPhone for an extended period of time (company issued): yes, the iPhone pretty much does the same thing as an android phone, maybe a little less.
A more specific definition [1]
FYI there are tons of mobiles in the iPhone price range.
Ferraris, yachts, bespoke suits, exclusive trips to Antartica, private engagements with former Presidents, a closet full of Gucci - luxury goods.
Due to the sophisticated nature of mobile tech, there are really no such thing as 'luxury goods' in that category, because he market size would be far too small to support the massive R&D effort. Which is why Bang & Olufsun don't make phones.
Of course Apple definitely takes cues from luxury good makers in their marketing.
[1] https://en.wikipedia.org/wiki/Luxury_goods#:~:text=In%20econ....
Edit: ‘equivalent‘ should be ‘comparable’... obviously the OP is not saying they are equivalent.