Riddle me this or Riddle me that Batman?

[Swingline]

I am small yet sometimes loud
Can connect people through portals
But i disconnect my owners from those closest around them.

who or what am i?
Snowboar.... got it right first since he didn't show any hesitation and just wrote what it is.

 

[snowboardchamp]

its a cell phone

 

[???]

a cell phone?
a pom pilot....
idk
hand held computer
gameboy
video games