My smartphone reminds me often times from the hand (from different heights / on different surfaces / comes differently to). The shell has always protected it and also has even gotten no traces. By 1mm edge on the display along, even this is super protected. Additionally, I have to scratching the supplied, clear screen protector on the display. (If time the keychain and the smartphone are in a pocket.) You still holds (since April 2014) and the Touch function is not impaired.
The material of the shell is also recommended, the smart phone is to me so never slipped out of his hand.
Tip: (with your fingers hold eg behind the thumb the envelope from the smartphone to the rear push away the front above) Due to the rapid removal of the shell, a cinema, visiting cards or one can sometimes rear put money card (between this envelope and Smartphone ). The envelope again draufmachen and they still fits perfectly to the mobile phone and does not fall off. (Intended by the manufacturer not provided, but practically :))
For me this envelope NO 'China-product'. This brings me fully on my expense. On when the phone is even greater now than it has been otherwise. : D
I have recommended the manufacturer also to my best friend who has another Samsung Galaxy.