Last week, Sarah Everard, 33, was reported missing after walking home from her friend's house in south London.
Her disappearance sparked a flurry of trauma for millions of women across the country who shared their own experiences.
Many have taken to social media to express their rage and concerns over women's safety when walking the streets alone.
Now Instagram user The India Edit posted a tip online to raise awareness to help "make us all feel safer".
Sharing it to her 23,500 followers, India was keen to help others should they ever find themselves in danger.
To activate the safety function, search "Emergency SOS" on your iPhone which will take you to your settings.
There it explains that if you press and hold the lock button, your phone will emit a loud siren before making an emergency call.
It will automatically call emergency services alerting them of your situation and location.
You can set up the option to call using nothing but the lock button to make the process easier and more discreet.
Then the emergency SOS will be activated when you rapidly press the lock button five times.
Once a loud siren emits from your phone, it will count from three to one with an option to turn it off if it's by mistake.
There is also an option to set up emergency contacts in your phone who will be sent a message of your location too.
For a period of time when you have entered SOS mode, it sends updates to your emergency contacts when your location changes.
Since India posted the tip, women across social media have shared it on their own Instagram stories to raise awareness to others.
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You can visit the Apple website to read further information and instructions on enabling the emergency SOS setting.
There are also other emergency features on iPhone where you can set it up on your Apple Watch too.
Meanwhile, women have been sharing advice to men on how they can help them feel safer when walking at night.
A man posted on Twitter asking about how he could help feel women feel less anxious on the streets.
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