OS X Yosemite allows you to record your iOS device screen using QuickTime. This feature is aimed at developers who want to make video demos of their app. To use this feature, your iOS device needs to be updated to iOS 8. Also, this recording feature doesn’t work with old devices that have a 30-pin dock connector. This is where it pays off to own an iOS device with a Lightning Connector.
To record the screen, connect your iOS device to your Mac using the Lightning cable and unlock your device.
Launch the QuickTime player on you Mac and go to File Menu. Select ‘New Screen Recording’
Click on the small arrow next to the red recording button. Select your iPhone/iPad and hit the record button to start recording your screen.
Pretty simple, isn’t it? If you are an Android user, you may want to check out our guide on recording Android screen without rooting.