Tap the FRIENDS icon in the Main Menu. You are now checking your friend’s activity. If you tap the FRIENDS tab, you’ll see a complete list. Choose any of them and you’ll see a window with their stats. You can also tap your emblem (upper-left corner of the screen) to access your Profile. In the Profile screen, you'll see several tabs. Tap the SOCIAL tab. If you are already connected, you will see a list of your friends below. Tap them to see their statistics.