Android texture glitches/bugs

Hello, I'm making a game for Android, and basically, it looks properly in editor, and on MY phone, when I run it. BUT I gave my game to some of my friends, and game is glitched so much at their phone. Most noticeable bug is weird texture on background. How it looks on my phone / what is should look like:

What it looks like on their phones ..

Please open image in full size to see how bad it is

HUD is messed up on different resolutions, but I'm planing on fixing it today. I tried using 32-bit display buffer and 24-bit depth buffer, they haven't fixed anything. Is it about compression or something ?