No screen protector, no case, no scratches here. I carry my phone in a separate pants pocket from everything else. I had a screen protector on a Moto Razr phone once, and hated it. Never using one of those again, and cases add too much bulk for me. I'm just careful with my electronics, and that seems to work for me. I would never throw my phone in a bag or pocket with keys though. That's madness.