n*ot all that difficult. by their very mission they proved how dumb they are*, these terrorists, so why wouldn't they commit other blunders? they simply bought the bottom line from the ISI generated LeT detailed plan which said keep the satellite phone safe so that you can call in for rescue once you get back to the high seas after the attacks.
I am not really sure what your stance is - are you denying the Pakistani origins and connections for the Mumbai terror attack?
How dumb they were, they hold all of India state machinery for 3 days.
I never accept Indian provided proofs, but i do accept Jihad's are a problem. Call it 50/50 !