InkCase Plus is a modular second screen for Android smartphones. Its E Ink display and apps expands the phones' capabilities. Users can read ebooks, view photo, control music playback, answer calls, view notifications, track activities on InkCase Plus connected to the smartphone via Bluetooth. More apps by third party developers can be installed onto InkCase Plus to utilize the capabilities of the E Ink's low power, always-on, and anti-glare attributes. The aluminum mid frame provides a light and rigid structure to house the E Ink display; the grooves around the mid frame attach InkCase Plus to different phones with its proprietary FitCase design.