NowNow allows you to open the Google Voice Search application from any iOS menu

  Last week Google launched a new version of the application in the App Store Google Voice Search, allowing us to perform searches on Google, just as we perform searches using Crab. The application is much faster than Siri, recognizes words just as well, and is available on a wide range of iDevices. Considering that Siri is only available on some terminals launched after the iPhone 4S (including), tweakCPC NowNow was launched in Cydia, and with its help we can open Google Voice Search anywhere in iOS.

Requires the latest Google Search app installed from the App Store. Start Google Voice Search from anywhere in iOS, much like Siri. On installation, setup an Activator method in Settings. NowNow is especially useful for older devices and firmwares that don't support Siri. It is recommended to use the Short Hold home button method for the best effect.

  The iDevices that do not have Siri, have the Voice Control system, and this tweak will allow you to modify the iOS, so that when you long press the Home button, you open the Google Voice Search application and not the Voice Control in iOS. The gesture that must be taken to open the Google Voice Search application can be customized from the Activator settings menu, and the NowNow tweak is available for free in Cydia.