Anyone who thinks carrying their iPhone  around in a holster is wack* should see what this cinematic dude in Japan has done.
Nothing less than an homage to Travis Bickle , Martin Scorsese 's disturbed anti-hero in Taxi Driver, this contraption straps to the lower arm--or lower leg--and then slides out, faster than the speed of Latka , just in time for you to say "Moshi moshi."
"Hello" will, of course, suffice.
*Congratulations! You are correct.