You can use Content Transfer to transfer data (such as calendar info, contact info, pictures, videos, and more) from a previous device, Android device, iPhone, or Windows Phone to new device.
Note: Depending on the device that you switch from, some data might not transfer.
On your new device, open the Content Transfer app. Complete the instructions on the screen to download the app on your previous device and transfer your data.
If the Content Transfer app isn’t installed on your new device, you can download it from the Google Play™ store.
You can add data that is synced with a web-based account (such as contacts that you sync with your Google™ account) when you add the account to your new device. For information about adding a work account to your device, you should contact your administrator for help.