Question about phone model (size)

Hello. If the phone model is different in applications made with Niotron, will there be a problem with the size format? Or does it fit every phone model?

Size format of what?

So the screen size of the phone is large, the screen size of the phone is small. Are the designs made in the application according to every size suitable for every screen size?

And again: The design of what? Text size, image size, Canvas, arrangements, …
Post a simple test aia and explain …

I say designs

So define design!

I did not understand your answer. For example. App design on Xiaomi Redmi Note 9S device is not compatible for Samsung A10 device. I mean, do the designs on the devices adapt automatically or do the designs break down?

Try an extension… search for responsive in the extensions directory App Inventor Extensions | Pura Vida Apps