Call 999 from your cell phone: Police won't be able to track your location, so you may cough, press some keys or provide any clue to locate you. Press 55 when prompted, and a Police officer will be able to listen to the voice coming through the phone. Call 999 from the Landline: Police can track your location even if you don't speak. They will be able to hear your background noises and send an immediate rescue if they a suspect any danger.…Call 999 from your cell phone: Police won't be able to track your location, so you may cough, press some keys or provide any clue to locate you. Press 55 when prompted, and a Police officer will be able to listen to the voice coming through the phone. Call 999 from the Landline: Police can track your location even if you don't speak. They will be able to hear your background noises and send an immediate rescue if they a suspect any danger.WW…