Envelope可将您的智能手机暂时转换为一个更简单、更安静的设备，帮助您从数字世界中休息一下。一个纸质envelope将您的手机只保留基础功能，可拨打和接听电话，同时可选择一个快速拨号联系人，而手机上的一个特殊应用程序会接管屏幕，只需等待您拨号。要使用Envelope，您只需挑选一款适合当天的envelope，并将您的手机密封在里面即可。

     Envelope temporarily transforms your smartphone into a simpler, calmer device, helping you to take a break from the digital world. A paper envelope turns your phone into a basic device which makes and receives calls, as well as selecting a speed dial contact, whilst a special app on the device takes over the screen and simply waits for you to dial. To use Envelope, you simply choose the right envelope for your day, and seal your phone inside.