Which version of JT2Go are you using?
IOS, Android, Windows 10 UWP App, JT2Go Desktop (all have model view thumbnails available, which is why I ask what version you are using)?
Testing: NX 10 | NX 11 | Teamcenter-NX Integration
Teamcenter 11.2 | TC Vis 11.3 | Active Workspace 3.2
JT is the common language of PLM and is the world’s most widely used 3D format. JT is the first ISO International Standard ( IS 14306-1) for 3D visualization and collaboration. Compact and accurate, JT is used throughout the product development lifecycle in all major industries to communicate the critical design information typically locked up inside a CAD file.
Siemens PLM Software customers rely on JT to be the most robust 3D visualization format available.