This is news after your fact but Norton Mobile Security has functions that can remotely scream, locate by GPS, or lock your phone as soon as you can login to your Norton account on some computer somewhere. Overseas I would look for the nearest internet cafe or travelling companion with a computer or phone to login to your Norton account. Change your Norton login as soon as you can reach a secure internet connection.
Additionally, use a password manager and use 2FA to login to the manager. I use a Yubikey with a USB adapter to the phone because the 2FA normally received on your phone is gone with the wind or pickpocket if stolen.
I see a lot of tourists in Europe with phones in their back pockets or in a bag or backpack with zippers. The bags are cut with razor blades. By the time you notice the contents spilling the gypsy is halfway down the block with the good stuff they can recognize in a heartbeat. The pocketed phones are simply lifted from pocket or purse. Doh!