Mobile browsers tend to do less caching, won't cache larger files, and don't caches files for as long. Doing an end-run around their image caching seems prone

Mobile browsers tend to do less caching, won't cache larger files, and don't caches files for as long. Doing an end-run around their image caching seems prone to cause problems. Has anybody tried this technique on a mobile browser, say Mobile Safari on iPhone, to see how it stacks up?