"Hey throwaway43532, [PERSON] just found out you're at [PLACE] and is on their way with a weapon. I contacted the authorities, but you need to get out of there now!" might be a severe example.
There are many situations where a cell phone can allow you to send or receive information that could tip the scales in your favor.
There are many situations where a cell phone can allow you to send or receive information that could tip the scales in your favor.