You can send urgent messages to recipients in emergency situations by pressing the power button 3 times in a row.
Sending urgent messages on Samsung Galaxy J3 Pro is as follows:
Step 1: Go to 'Settings' and select 'Advanced Features.'

Select 'Advanced Features'.
Step 2: Choose 'Send SOS Messages'.

Choose 'Send SOS Messages'.
Step 3: Select 'Add'.

Select 'Add'.
Step 4: Choose contacts or create a new contact.

Choose contacts or create a new contact.
Step 5: Complete the setup.

Setup completed.
With that, the setup process has been successfully completed. Wishing you all the best.