Apple is prototyping a second new iPhone display, this one measuring around 6.4 inches, that could be destined for the 20th anniversary iPhone, according to a Chinese leaker. In a recent post on Weibo, the leaker known as “Digital Chat Station” said Apple is currently sampling two new display panels.



Why?
Published data shows around 42% of upgraded iPhones are >3 years old, Apple themselves have published that there are hundreds of millions of 5+ year old iPhones in use, and that iPhone users keep their phones longer than Android users.
From what I can tell, having an old iPhone is more normal than having an old Android.
What are the statistics for phones that are >= 6 years old, like you?
How many of those are the primary devices, like you are claiming to be?
A better comparison would be iPhones vs high-end/flagship Android phones.