That's right, I did not cite these ANT theorists like Latour. With my focus on SCOT and appropriation (Aneignung), I tried to emphasize the interpretative flexibility of a technological artifact available to users of this technology and the effects on culture. I read into Latour as well as Law, but I did not find it necessary to discuss, because with the mobile phone it does not help much to understand the different uses and cultural contexts of this technology. Also ANT was not discussed much in literature about the mobile phone.
I thus focused especially on appropriation, because this framework (Spittler, Beck, Hahn ..) works quite well to study technology.

Thanks for the link anyway!