What screen resolution (pixels) has your phone. If you don't know that: What exact make & model is it?
The ball image is 362px × 245px (depite the link saying otherwise)
The Rect image is 367px × 355px
So these either aren't screenshots or the phone is changing resolutions at will.
What do you use to render these images? Textureareas? Sprites?
Is your app using GLES2 or GLES3?
I guess it is a 2D app?