An old man’s advice.
When in danger NEVER use your cell phone. Tonight after dark stand in front of a mirror and hold your cell up to your face. Is that really what you want the bad guy to see? A perfect target.
Talking with your face lighted up tells the bad guy exactly where you are. Be very still, very quiet and wait your chance. And YOU NEED BOTH HANDS!!
You need to have your attention fixed on the danger, not distracted trying to talk to some low intelligence phone bank employee.
After it is all over, call 911 and them to come and pick up the body. But not before you are certain he came by himself. Always be wary about the possibility of a backup partner.
I watch a guy on youtube (Active Self Protection) where he reviews shooting videos. He hasn’t mentioned your very good point about the cell phone and light, but numerous times he chides the cop for radioing in “shots fired, shots fired”. It provides very little information to the dispatcher and takes away from the officer’s attention to the rapidly developing situation.