This Jailbreak Tweak Allows You To Change Default Browser On iPhone, iPad, iPod touch
If you’re a fan of third party iOS web browsers and are tired of manually opening links to avoid using Safari, then you’re in luck. Now there is a free jailbreak tweak that allows you to change the default web browser in iOS.
Unimaginatively named Browser Changer, the tweak is free and downloadable now via Cydia.
Once installed users can set the browser that will be opened when tapping links in emails and the like, as well as overriding the way Maps and YouTube are opened when tapping the relevant links.