Emergency contacts
Check their phone, wallet card, and any ICE or medical ID
Some steps differ by region inside the country.
Where
Their phone contacts, messages, email address book, and any physical address book.
How
Start with recent calls and messages, the people who matter appear in the last two weeks of activity.
Look for contacts saved as ICE, Mum, Solicitor, Accountant, or GP.
Search their email for signature blocks, which carry full contact details for professionals.
Ask two close friends to help fill the gaps, they will know people you do not.
What to bring
Their phone, and the passcode if you have it
This is practical information, not legal, medical, or financial advice.