what app can open a dxf file
In SchemataCAD viewer you can easily view 2D CAD drawings stored on your tablet or mobile phone. Viewer contains AutoCAD SHX standard fonts. Also are accepted other SHX fonts and shapes, which are in same folder as is a DWG/DXF file (or define folder with SHX fonts in configuration). - Size of available memory is limited, sometimes it is not possible to open very big drawings, for example 20MB file size.