Unusual folding keyboard from Microsoft, presented at the conference by MWC 2015, tested the phone Lumia 640. The smartphone runs on an updated version of the operating system Windows Phone 8.1 GDR2, which added support for Bluetooth HID-profiles. On the Resource View Nokia Frances video shows the process of typing using new items. Judging by the description and comments, work with Bluetooth-keyboard testers left only positive emotions.