Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Highest Quality iPhone 6 4.7" [Tempered Glass Screen Protector], Best in Quality Japanese Glass. For Apple Iphone 4.7- Nuglas®
Product description: Real Tempered Glass Made of real tempered glass made in Japan that protects the original screen from shattering, with an industry leading hardness of 9H, just below diamond with a hardness of 10H. Provides super high definition clarity. Rounded Edge Designed to provide the smooth and naked iPhone screen experience as well as improved chip-resistance. Oleophobic Coating Prevents excessive fingerprinting and oil stains, and makes the film easy to clean. Silicone Bubble-free Adhesive Adheres to the phone's screen without any gaps or bubbles, leaving the touch sensitivity unaffected. Anti-shatter Film Made to protect you and your phone - if it does break, the tempered glass breaks into small pieces that stick together, making it safer for users. COMPATIBILITY Iphone 6
Product feature: Youtube, Round and key hole precision using advanced 2.5D process, Special anti-oil processing makes fingerprints and oil not easy to stay on the surface and easy to clean.Anti Fingerprint: Oleo-phobic coating technology keeps the NuGlas free from fingerprint smudges whilst being smooth to touch., 8-9H Surface hardness. Impact resistant and explosive proof screen protect, Ideal real glass thickness of 0.3mm - not too thick allowing for sensitive touch screen and not too thin allowing full protection from falls and impact.
Product price: $7.99
Product brand: Nuglas
Target attributes: Device Type
Answer: attribute: device type
value: for apple iphone
source: product title
attribute: device type
value: iphone
source: product title
attribute: device type
value: phone's screen
source: product description