Materials • Phone cases come in a wide variety of materials—silicone, durable plastics, leather and even Kevlar. Catherine Lambert works as a senior category manager for uBreakiFix by Asurion, a repair service for personal devices, and she recommends one above the others: polycarbonate, a shatter-resistant plastic. Lambert suggests looking for these words on the packaging: “rugged” or “military-tested.” This will indicate that a case can withstand repeated drops.