I've been analyzing my access logs and found two very different ways Windows Phones advertise themselves. Here are two examples for a Nokia Lumia 800:
Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0; NOKIA; Lumia 800)
Windows Phone Search (Windows Phone OS 7.10;NOKIA;Lumia 800;7.10;8107)
So I'm wondering what this second form is. It appears less often than the former and seems related to some sort of "search" related feature.
Does anyone have an idea? Which App or feature will send http requests using this second UA?
Note: I know user-agents can be trivially spoofed. My question is "in what cirsumstance will an unspoofed Windows Phone device use either user-agents?"
EDIT: I've noticed that the
Windows Phone Search variety only produces hits on images and never on anything else (html, css, js, ...). This rule out the possibility that this is just a regular user-agent used by some installs of Windows Phone. This is clearly not the web browser calling.