To check your version number or get the latest system update for your phone, first go to 
Settings > System > About phone. Then look for these labels:
- System updates: Touch to check whether you have any pending system updates
- Android Version: Look partway down the list for this heading and the number just below it.
For comprehensive online help and support, including details about Google Play edition hardware running the software described in this manual and links to information about other Android devices, visit support.google.com/android