Jessica Lockett | Getty Images In the wake of the awful news of Sarah Everard's suspected murder, conversation around women and safety has been at the forefront this week. Women regularly take numerous precautions when out on their own - especially in the dark - including walking busier routes, wearing shoes they can run in, and avoiding listening to music so they can have their senses about them. It's sad that this is the reality, but regardless it's just what many women feel they need to do. If you're feeling more wary about your safety than ever before right now, you might want to ensure your smartphone is equipped to assist you if an emergency were ever to arise. Both iPhones and Android phones - as well as the Apple Watch - have useful 'Emergency SOS' and 'Safety Check' functions which enable you to store certain contacts who may be quickly and easily alerted in times of need. Here, we run through how to set these functions up so they're easily accessible from your lockscreen.