With the arrival of the new OS X Yosemite, we got a bunch of new features that makes us the same time more “dependent” to Apple products. Now you can record your devices screen by connecting your Mac to them using QuickTime Player and a Data cable.
How to Record iDevice’s screen
Connect Device to your Mac with the Lightning Cable
On your Mac launch QuickTime Player
Navigate to File > New Screen Recording, this should open a new Window with a Red Record Button
Find on it and click the dropdown button (on the right side of the window), select your Device & Microphone
If you want to Highlight the Touch you make on your Device, Tick the Show Mouse Clicks
Now that we finished configuring, just press the Red Record button to start recording. To stop recording just click the Menu bar or press Control+Cmd+N on your keyboard.