The iPhone 7’s overall design is similar to the iPhone 6S, but introduces new color options, water and dust resistance, a new capacitive, static home key, and removes the 3.5 mm headphone jack. The device’s internal hardware also received upgrades, including a heterogeneous quad-core system-on-chip with improved system and graphics performance, and upgraded 12 megapixel rear-facing cameras with optical image stabilization on all models and an additional telephoto lens on the iPhone 7 Plus model to provide enhanced zoom capabilities.