@Porkchop Can unlock using Find My Mobile but Remote unlock would need to have been set up, otherwise need to Factory Reset . Imagine Smart lock for trusted places/devices is not an option. To use Google's Find My Device wouldneed to know the password. More details in this guide https://www.samsung.com/uk/support/mobile-devices/i-cant-unlock-my-device/
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .
I do feel for the situation you are in with your son however the security protocols are not meant to be circumvented on a phone.
Has he not set up a fingerprint or face scan to unlock ?
If not then hopefully he can eventually remember the required code or he'll have to factory reset which will mean the need of pass codes.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "