If you are not full with the already released couple of Cydia tweaks that aims to provide Siri with some more speed on your screen, by eliminating some extra content from the screen or by managing the screen preference to load the Siri quickly on the devices, however, there is no need to run such kind of tweaks on the iPhone 4S, because it is already carrying a dual-core processor with stabled Siri functionality, but this kind of plugins really does work for those who have secretly ported the Siri on an older gen device, such as on iPhone 4.
HalfSiriFirst is a new tweak launched in Cydia, and nothing offering special things to the users, instead it makes some changes to your normal Siri loading page, and resize the Siri window to half screen of your device, and claims to be made it faster in launching process. In our test drive to the tweak, we have not noticed any new thing in the tweak, and as well as it works similar to the already released coupled of Cydia tweaks with similar claims in the Cydia. In addition to the same feature, it allows you to select custom background wallpaper on Siri window, and give it a new look on your device.
HalfSiriFirst requires Siri functionality to be used, including but not limited to Spire and there are no options to configure. It’s free, so give it a shot and see if you like it. HalfSiriFirst is available in ModMyi repository for free of cost.