It may be that those with lower incomes spends more on a smartphone because it is their only way to access the internet.
I bought a Chromebook for $200 probably 5 years ago that my wife still uses for all of the things that she doesn't want to use the phone for. There are still decent computers that are available for far lower prices than top-of-the-line phones.
It all goes back to personal finance vs. capitalism. Big Business wants you to believe that only the best smartphone will do, no matter your budget (what budget, haha?).
If you don't make that much money and you want to escape eternal debt-hell, you have to overcome this mindset and find good budget options. And I maintain that it can be done. Move out of the city. Establish trusting relationships through your own hard work and good faith efforts. Swallow your pride and lean respectfully and gratefully on friends and/or family if you have to. And then be there when someone needs you for the same. Big Business also wants you to believe that it's every man for himself, but that doesn't have to be true either.