To add a friend, select Community from the main menu screen, and then select Add Friend, from here you can see friend suggestions, or search for a specific name of a friend to add.
You may add a friend by tapping on someone's blue name seen in a Chat or Clan screen.
After a match, you will have an opportunity to add your opponent as a friend.
Reminders:
1. The Maximum number of friends is 50.
2. You can only send 30 or fewer friend requests.
3. Only 5 people can be deleted from your friend list per day.