App to monitor radiation emitted from your iPhone 4 [Jailbreak]
RealTime Radiation: The App was not allowed to be featured at the App Store but manage to on Cydia Store. This Cydia Tweak allows user to measure the radiation levels even while making a call or during the iPhone on silent mode.
The App is available in ModMyi Repository for free.
Note: Here, Reading on this jailbreak tweak may not be accurate and should not be used for scientific purpose.