From experience... she could be serious. If she's craving attention and your phone is taking it from her; you might find someone taking her from you.
It almost happened to me but I realized that she was serious and that I in fact was choosing a lesser love over my first. Counterstrike was my vice for a while but I didnt need that like I need my phone. I dont know if I could part from my gagetry for a woman.
Sounds like a tough decison