how do you hail a cab in GTA IV?

Answer 1

If you're on PC, stand right in front of the cab to stop it otherwise it may just roll by.

Then press and HOLD the same button which you use to jack a car if I am not wrong.

Answer 2

for pc, press E, then hold F when you get in

for ps3 press L1 then hold triangle

for xbox360 press Lb then hold y when you get in

Answer 3

RB on Xbox360

Answer 4

LB make sure to hold Y when you are ready to enter, otherwise you will end up stealing the car