Thank you for reaching out to the Samsung community! To set birthday reminder first go to calendar>>3 dot>>manage calendars>>enable contacts birthdays. Select the birthday date and set the notification time and save the reminder.
Be sure to hit ♡ when you find an answer that works for you. For Further assistance, you can get in touch with us via Live Chat option by following- http://livechat.support.samsung.com/Customer_new/IN. You can also connect us via Samsung Members web community by following mentioned url-https://community.samsungmembers.com/en_IN#/
