How to take a picture of the Northern Lights in Ireland on your smartphone

Aurora Borealis at Blackrock Castle, Cork
It was 10.30pm, I was in bed and my phone beeped. An incoming text message: āGo look at the night sky, the lights are visible, donāt forget to make a wishā.
I went outside but couldnāt see anything. From photos of the Northern Lights, I had naively expected to be blinded by the sky pulsing with colour.Ā