Samsung Galaxy S8 Active User Manual page 112

Call log
The numbers of the calls you have dialed, received, or
missed are stored in the Call log.
1. From a Home screen, tap
2. Tap Recents. A list of recent calls is displayed.
If the caller is in your Contacts list, the caller's
name is displayed.
Apps
Phone.
105
Save a contact from a recent call
Use recent call information to create a contact or
update your Contacts list.
1. From a Home screen, tap
2. Tap Recents.
3. Tap the call that contains the information that
you want to save to your Contacts list.
4. Tap Details.
5. Tap Create contact.
– or –
If you want to replace the number for an existing
contact, tap Update existing.
Phone.