Open the hood and locate the heater air inlet.
Turn the heater on at low temperature and low fan speed.
Place a lighted candle near the opening of the duct in which the phone is lodged.
Fully open the valve on a portable MAPP torch, DO NOT LIGHT IT.
Bleed MAPP GAS from the torch into the heater air inlet until you hear a boom.
Remove the phone from whatever it impaled.
For more spectacular results close all the windows, place the lighted candle in the lower left corner of the dash board. Use evaporate gasolene into the heating inlet in stead of the MAPP gas.
From a real engineer;-)