From Exit West by Mohsin Hamid.

“A thriving trade in electricity was under way in dark London, run by those who lived in pockets with power, and Saeed and Nadia were able to recharge their phones from time to time, and if they walked to the edges of their locality they could pick up a strong signal, and so like many others they caught up with the world this way, and once as Nadia sat on the steps of a building reading the new on her phone across the street from a detachment of troops and a tank she thought she saw online a photograph of herself sitting on the steps of a building reading the news on her phone across the street from a detachment of troops and a tank, and she was startled, and wondered how this could be, how she could both read this news and be this news, and how the newspaper could have published this image of her instantaneously, and she looked about for a photographer, and she had the bizarre feeling of time bending all around her, as though she was from the past reading about the future, or from the future reading about the past, and she almost felt that if she got up and walked home at this moment there would be two Nadias, that she would split into two Nadias, and one would stay on the steps reading and one would walk home, and two different lives would unfold for these two different selves, and she thought she was losing her balance, or possibly her mind, and then she zoomed in on the image and saw that the woman in the black robe reading the news on her phone was actually not her at all.”