Cumbersome iOS text editions have already been finished, because now there is a new free jailbreak tweak called PreditctionShortcuts that adds options adds cut, copy, and paste to the right of the QuickType section of the keyboard, for easy access.
The tweak works by dynamically changing the top row of the keyboard between being an editing tool and a tool for predictive writing, depending on what you're doing at the time.
As you can see in the animated image below, the predictive keyboard appears when you are writing words, but when we pause, buttons to copy, cut and paste appear:
Because it always is changing between the two modes, you can still use QuickType for text suggestions as you type. On the other hand, the editing controls additional text will always be at your fingertips whenever you make a pause to write something.
PredictionShortcuts not only works in all native and third-party apps that support keyboard QuickType, but also works in WebKit applications such as Web applications that can be used in Safari.
This twak jailbreak also has a configuration section and can access it go to Settings -> PredictionShortcuts, where you can easily enable or disable the tweak and even enable or disable AutoCorrect.
If you are editing regularly your texts, such as applications word processing, or even simple notes application, this is a jailbreak tweak that could improve productivity because from now on you have available additional functions by means of a one touch on iOS.
If you are interested in trying the tweak PredictionShortcuts, you can download it for free on your device jailbroken iOS9 from the BigBoss Cydia repository.