If this is true, it's the opposite of what you imply. The fancier and more expensive the phone, the less productive you're likely to be with it.

My 4 year old Android device can do anything productive that someone else's iPhone 14 can do. What it can't do is play the latest games (not enough RAM), stream Netflix comfortably (small screen), or impress people with face unlock (lowly thumbprint recognition for me).