So it must be the default OS - why don't you reveal the manufacturer? Clearly an FB app in some form is bundled.

Companies like this should be named and shamed. It's the only power we have as consumers.

I don't disagree, but I didn't find this in my capacity as a consumer - I found it in my capacity as an employee of a wireless company that has a relationship with this manufacturer. Since I'm using my real identity on here and I've mentioned who my employer is in the past, I don't feel at liberty to divulge anything.

Clearly an Android, since Apple removed that weird Facebook/Twitter integration in the early days.