9. 7000 series aluminum and Ion-X Glass Screen
![Image Credit: https://www.pinterest.com/pin/323414816968205315/](http://34.106.202.240/wp-content/uploads/2015/10/7000-series.jpg)
The casing of the 7000 series has a marked difference from the previous phones. The iPhone 6s feels solid and durable instead of delicate and fragile. The Ion-X glass screen is resistant to scratches and is a welcome improvement.