Before you use the Device Switch app, do the following:
If you're switching from an iPhone, back up your iTunes music on your computer.
Turn on your new BlackBerry device and complete the initial setup.
Connect both devices to the same Wi-Fi network. The network should be a personal network or a network that supports multicast for device discovery.
Make sure your BlackBerry 10 device is running BlackBerry 10 OS version 10.2.1 or higher. To update your device software, tap Settings > Software Updates > Check for Updates.
Download and install the Device Switch app on both your previous and your new device. To find the Device Switch app, visit BlackBerry World, the App Store, Google Play, or www.deviceswitch.com.