I still use an unsupported 2018 Asus ZenFone Max (M1) ZB555KL X00PD with a broken screen. I’d like to change the screen.
Measures of the device: 156 x 77.5 x 10.6 mm (6.14 x 3.05 x 0.42 in).
Now, I don’t know if these are standard measurements for a certain set of smartphones (the ones that can be held and used with just one hand) or if any company can choose what size it uses for their devices, making finding a screen that fits incredibly more difficult.
The other question is, how difficult would it be to do it myself?
As some people mentioned already … Aliexpress is a good place to look for replacements. Ebay can be good as well. However I really question that its even worth it. You can find flagship phones like the Galaxy S9, Oneplus 6, LG G7, … often for less than 70 bucks in good condition.