You can simply search for – 'I lost my phone' – and Google will bring up a special page showing all of the devices you're recorded as owning.
You can click on the one that you've lost, and the website will show you its location.
Or you can choose other options, like locking the screen or logging out of your Google accounts, like email.
But there's a catch, as some of the features only work on Android phones, and if you use an iPhone, it suggests you use your iCloud to find it.
