When viewing any sheet on an iOS device, tap the filing cabinet icon, and then select "View Settings" at the bottom.
In the next screen, please click on "Fullscreen" so that sheet will fill your device's screen.
On the Website:
Note: This feature is not available with Safari or Internet Explorer
1. In your project, click on the 'Sheets' icon, then search for a sheet or scroll through to find the sheet you'd like to view.
2. Click on the thumbnail in the gallery view of sheets, and you will be taken directly to the sheet viewer.
3. You can zoom in and our of your drawing as you like. To expand to full-screen view, click the opposing arrows button on the zoom bar in the upper left corner.