Works on more phones
On iPhone, Lens uses the depth camera. On Android, the person is found by an on-device AI model that is built into the app, so it works on front and back cameras, offline, without sending your photo anywhere.
Your original stays untouched
The subject outline is stored inside the photo file. The blur is applied when you view, share or save, from f/1.4 (strong) to f/16 (almost none).