Mobile browser testing/iPhone

Framesets and Textboxes
Rendering web pages in Safari Mobile that rely on the ability to scroll individual frames is a problem because there are no scroll bars on the iPhone. This applies to editing content in a fixed width/height textbox for large pages because there is no easy way to access the information that falls outside the textbox area due to the lack of scrollbars.

Resource limitations

 * The maximum size for decoded .gif, .png and .tiff images is 2 megapixels
 * The maximum size for decoded .jpg images, using subsampling, is 32 megapixels
 * The decoded size of animated .gif images myst be less than 2 mb
 * The maximum size for a canvas element is 2 mb
 * Individual Resource files must be less than 10 mb
 * Javascript execution time is limited to 10 seconds for each top-level entry point
 * for iPhone OS version 1.1.4 and earlier, the maximum eecution time is 5 seconds
 * The maximum number of open documents is eight

Unsupported Technologies
Safari on iPhone does not support any third-party plugins or features that require access to the file system. This includes:
 * Downladable web fonts
 * Modal dialogs
 * Mouse-over events
 * Hover styles
 * Tooltips
 * Java applets
 * Flash
 * QuickTime VR Movies
 * XSLT
 * Plug-in installation
 * Custom x.509 certificates
 * WML
 * File Uploads and Downloads