Here's a possible solution for the mobile phone issue in a horror film.
How many of you occasionally leave your mobile phone at home or lose it somewhere?
Imagine this scenario - The victim is investigating a noise they heard (a cliche in and of itself I know) so they go into the darkness. We know there is a killer out there. The victim is about to be attacked. To increase suspense we are then shown the victim's mobile phone left somewhere else and one of their friends who knows about the killer on the loose is trying to contact the victim but obviously can't...the victim's fate is sealed.
Does this avoid the cliche do you think or does it create a new cliche? Has this been done in a horror film already?