[Well, 'phone' seems so simple for what it does, but that'll work.]

No, it's portable. Try walking around! I can even see a bit of the area around you. Looks like your apartment is a mirror image of mine.

[Puts her CAT down on the bedside table, also experimenting.] Wow, these things are so amazing! I wonder if I can take it home with me. I'll just step over to the closet. You'll probably still be able to see me, but let me know if something cuts out.