A Newton device developed by Siemens for the German market. Based on the Original MessagePad, the NotePhone integrated a telephone, fax modem, and compatibility with PBX switchboards into a single package. Siemens also developed a Newton OS prototype known as the Siemens Online Terminal.
A third-party device that utilizes a licensed version of Newton OS is commonly referred to as a clone.
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Flickr: Jim Abeles’ Siemens NotePhone Prototype