You can make this change persistent (to avoid changing for every document) in Edit Fit Page.
You can also try saving the PDF again in Acrobat using the PDF Optimizer to optimize the PDF file using Standard settings, or the Reduced Size PDF option.
Update (): this issue has now been fixed in the latest updates for Adobe Acrobat and Reader 9.5.3 and 10.1.5 available from the Adobe site: Reader updates Acrobat updates Workarounds Changing the zoom settings should allow you to see the contents of the document.
Try reducing the Zoom factor, or click the button to “Fit one full page to window”.
Jailbreaking your i Phone allows you to install apps and tweaks that aren't allowed in the Apple App Store, which gives you more control over your i Phone but is frowned upon by Apple.
Disclaimer: Jailbreaking an i OS device is an unauthorized use of Apple's software and may result in security vulnerabilities, instability, and the disruption of Apple services.
Ultra Sn0w is of course, available only on Cydia, and you can download it from one of the default Cydia repos available after you initially jailbreak your device.