Screen Protector for Samsung Galaxy Prevail 2 / Galaxy Ring M840 Clear film protects your cell phone screen from scratches, fingerprints, dirt and buildup. Custom-tailored to exact dimensions of the Samsung Galaxy Prevail 2 / Galaxy Ring M840 Does not interfere with touch-screen operation. Easy to apply and easily removable without leaving residue. Compatible with: Samsung Galaxy Prevail 2 (Boost Mobile) SPH-M840 / Samsung Galaxy Ring (Virgin Mobile) SPH-M840