Some of the iPhone and iPad applications which needs high-bandwidth are disabled by default while running on 3G network. These applications would only run on high-speed Wi-Fi connections. Some VoIP apps including Skype charge extra when running over 3G. Now there is an applications called “3G Unrestrictor” which enables these applications to run over 3G that is recently updated with iOS 4 and iPad support.
Though this application is only available for jailbroken iPhones through the Cydia App Store. If you haven’t already, you can jailbreak your iDevice running iOS 4 by following this guide.
1) Make Free calls using VoIP software.
2) Watch WebTV and high quality YouTube vidoes.
3) Download applications and media larger than 20MB from App Store or iTunes store.
4) Compatibility with all major applications.
The application can be download from Cydia for $2.99.