Blender Mobile is a powerful tool for 3D modeling on the go, and opening OBJ files is a common task for many users. To open an OBJ file in Blender Mobile, simply follow these steps:

1. Launch the Blender Mobile app on your mobile device.

2. Tap on the 'File' menu and select 'Import' to browse for the OBJ file you'd like to open.

3. Once you've located the OBJ file, tap on it to import it into the Blender Mobile app.

4. The OBJ file will be loaded into the app, and you can start working with it right away.

Opening OBJ files in Blender Mobile is a straightforward process that allows you to quickly access and edit 3D models on your mobile device. Whether you're a professional 3D artist or a hobbyist, Blender Mobile provides a convenient way to work with OBJ files on the go.