At present, Document editor component is not responsive for mobile, and we haven't ensured the editing functionalities in mobile browsers. Whereas it works properly as a document viewer in mobile browsers.
Hence, it is recommended to switch the Document editor component as read-only in mobile browsers. Also, invoke fitPage method with FitPageWidth parameter in document change event, such as to display one full page by adjusting the zoom factor.
This repository illustrates how to deploy Document Editor component in a Mobile-Friendly Web page.
- 
Product page: Syncfusion® Javascript Word Processor 
- 
Documentation: Syncfusion® Word Processor 
- 
Online demo: Syncfusion® Word Processor - Demo 
For any other queries, reach our Syncfusion® support team or post the queries through the community forums.
Request new feature through Syncfusion® feedback portal.
This is a commercial product and requires a paid license for possession or use. Syncfusion's licensed software, including this component, is subject to the terms and conditions of Syncfusion's EULA. You can purchase a license here or start a free 30-day trial here.