While in a relationship if the phone cuts out during an argument, the man always calls back.
If you are speaking to mum or dad they will call back, but for grandparents you must always call back.
If the call drops out while driving (w/out hands free) it’s assumed you’ve seen police and you will call back when it’s safe.
If you state that you are entering a car park it is assumed that your reception dropped out and you must always call back.
If at any point you mention that you are low on battery it is assumed your phone died and you must at minimum text back.
If a person calls you every night complaining about their life, on the third night in a row you are entitled to hang up.
If the person you are speaking to is interrupted by kids, husbands or other persons more than four times during your conversation you may hang
It is not acceptable to answer your phone in quiet zones: cinema, church, library, funeral. Reply texts are only acceptable in the cinema & library.