With the popularity of touch screen mobile phones, straight touch screen mobile phones have become the current standard design. Dual screen design has become increasingly rare, but there are also a few manufacturers such as YotaPhone, which has a unique design of ordinary screen+ink screen. Recently, InkCase launched a protective case with built-in E-Ink screen for iPhone 7. While using the phone normally, you can also use the E-Ink screen on the back of the protective case to read novels.

The e-ink screen is currently recognized as the best choice for reading e-books. The accessory manufacturer Oaxis also took a fancy to this feature and launched the InkCase protective sleeve. The 4.3 inch ink screen on the back of the body supports ePub and TXT format e-books, but the product logo will be displayed by default.

The InkCase case does not have a wired connection to the iPhone 7, nor does it have a charging function. Data is also transmitted through Bluetooth. The protective case itself is charged by a magnetic charger. This case will be shipped in November, with a reservation price of $99.