“Are Christians using technology to transform the world or is technology transforming Christians in unhealthy ways? Especially since the era of Franklin and Jefferson, when inventing things and technological ways of organizing things became a way of life, Christians have needed to be alert to such questions. Tony Reinke’s reflections on the smartphone offer helpful advice as to how people today need to be vigilant regarding the impact of their favorite new technologies.”
―George M. Marsden, author, C. S. Lewis’s “Mere Christianity”: A Biography

“12 Ways Your Phone Is Changing You is an incredibly convicting and profoundly insightful read. Smartphones have become a part of our lives, but Tony explores the devastation to the human mind and soul due to devotion to technology. He calls us to examine not merely the use of our smartphones but the motives that inspire it. This is a necessary book for our generation, to remind us that our phone habits will either amplify or get in the way of our most important longing of all: the soul-satisfying glory of our Savior.”
―Jackie Hill Perry, author; Bible teacher; hip-hop artist

“In contrast to the television that dominates the modern living room, the smartphone is typically far less conspicuous in its presence. Perhaps on account of this subtle unobtrusiveness, surprisingly few have devoted sustained reflection to the effect this now ubiquitous technology is having on our lives. In this book, Tony Reinke plucks these devices from the penumbra of our critical awareness and subjects them to the searching light of Christian wisdom. The result is an often sobering assessment of the effect they are having on our lives, accompanied by much prudent and practical counsel for mastering them. This is a timely and thoughtful treatment of a profoundly important issue, a book that should be prescribed to every Christian smartphone owner for the sake of our spiritual health.”
―Alastair J. Roberts, Adjunct Senior Fellow, Theopolis Institute

“Tony Reinke’s 12 Ways Your Phone Is Changing You is one of the most important little books a twenty-first-century Christian could read. Highly recommended.”
―Bruce Riley Ashford, Professor of Theology and Culture, Southeastern Baptist Theological Seminary; coauthor, The Gospel of Our King

“For many, the phone is an object of increasing anxiety, exhaustion, and dependency. The wise Tony Reinke leads us practically to find freedom from the phone without requiring us to huddle away in a monastery somewhere in the middle of Montana. If you want to know how to steward your technology and your life for Christ and his kingdom, read this.”
―Russell Moore, Editor in Chief, Christianity Today

“If you feel uneasy about your constant relationship with your phone (and even if you don’t, but wonder if you should), you will find Tony Reinke to be a reliable guide for how we should assess the impact of our phones on ourselves and our relationships. A marvelous book that tackles a massive subject in clear and compelling language!”
―Trevin Wax, Vice President of Research and Resource Development, North American Mission Board; Visiting Professor, Cedarville University; author, The Thrill of Orthodoxy; Rethink Your Self; and This Is Our Time

“Two things strike me about this book. First, Reinke writes with great humility, including himself in the narrative to help us see him not only as a teacher but also as a fellow struggler. Second, this is not a guilt-ridden slog through what not to do. Tony keeps pulling us up into the glories of Christ and even helps us to dream of new ways to glorify God through our digital technologies. Helpful, hopeful, humbling, and inspiring, 12 Ways Your Phone Is Changing You is a book for this age and wisdom for generations to follow.”
―Trillia Newbell, author, If God Is For Us: The Everlasting Truth of Our Great Salvation

“Image is everything, and for a woman who has built her identity on the sands of how she’s embraced online, the eventual letdown will come like a crash. But there’s a better way forward, a way to use our phones in selfless service, to glorify God in our connectivity, and to image Christ by our phone behaviors. For this, we must evaluate our glowing screens and train our discernment to see the difference between the sight-driven habits of our age and the Scripture-lit pathway of faith. Every chapter of this book is like the right kind of push notification in our lives. Stop, read, process, and apply with care.”
―Gloria Furman, author, Labor with Hope and Missional Motherhood

“As a teenager and a smartphone user, I needed this book. Tony Reinke is compelling and convicting, yet continually meets us with grace. My generation needs this book, because we need to get technology right. If we don’t, the cost is great. 12 Ways Your Phone Is Changing You should be a must-read for every smartphone user, especially for us younger ones.”
―Jaquelle Crowe, author, This Changes Everything: How the Gospel Transforms the Teen Years

“It took more than a generation for the quaint ‘horseless carriage,’ with all its magic and horror, to become the ordinary, unexamined ‘car.’ But the device we once called a ‘smartphone’ has reached its status as ‘phone’―a common, everyday inevitability―with such breathtaking speed that it has left us little time for reflection on the true power it has in our lives. Tony offers us a distinctly Christian take on the little wonders in our pockets, seeing their goodness, beauty, and power, but also applying godly wisdom and well-researched cautions to help readers use their phones without being used by their phones.”
―John Dyer, Dean and Professor, Dallas Theological Seminary; author, From the Garden to the City: The Place of Technology in the Story of God

“Experience practical theology at its finest as Tony applies a thorough understanding of the Scriptures to a thorough understanding of our culture, resulting in a beautifully written and balanced guide to the dangers and opportunities in the palms of our hands. Yes, our phones have changed us for the worse, but this book will change us and our phone use for the better.”
―David Murray, author, Reset and Exploring the Bible; coauthor, A Christian’s Guide to Mental Illness

“The more widespread and influential something is, the more Christians should think carefully about it. In this wisdom-filled book, Tony Reinke helps us do just that with the smartphone. Without descending into technophobia or paranoia, he shows the various ways in which phones are changing our lives, highlighting both the problems with this and the solutions to it. A timely and thoughtful book.”
―Andrew Wilson, Teaching Pastor, King’s Church London

“Rarely is a book as practically impactful as it is theologically rich. In an age in which daily we are drawn into a digital vortex, Tony Reinke warns of the implications and challenges us to examine whether our phones have displaced our spiritual priorities in Christ. With unflinching honesty, Reinke shares his own technological struggles, and in so doing, moves us to a posture of reflection, prayer, and even repentance. Thoroughly engaging and immediately applicable, 12 Ways Your Phone Is Changing You is a must-read for our time.”
―Kim Cash Tate, author, Cling: Choosing a Lifestyle of Intimacy with God

Tony Reinke is a nonprofit journalist and serves as senior teacher and host of the Ask Pastor John podcast for desiringGod.org. He is the author of Lit!: A Christian Guide to Reading Books; 12 Ways Your Phone Is Changing You; and God, Technology, and the Christian Life. 

John Piper is founder and lead teacher of desiringGod.org and chancellor of Bethlehem College & Seminary. He served for thirty-three years as a pastor at Bethlehem Baptist Church in Minneapolis, Minnesota, and is the author of more than fifty books, including Desiring God; Don’t Waste Your Life; and Providence.