This book is a valuable resource for anyone interested in the subject area of computers, particularly in the field of hardware and mobile devices. The author, Paul McFedries, provides a comprehensive guide to the iPhone 4 in the Portable Genius Ser. textbook series. Published in 2011 by Wiley & Sons, Incorporated, John, the book has 336 pages and is written in English.

The book measures 9.1 inches in length, 6.1 inches in width, and 0.8 inches in height, with a weight of 0 oz. It is a trade paperback format and falls under the categories of Books & Magazines, Textbooks, Education & Reference, and Textbooks. The book covers a range of topics related to the iPhone 4, making it an essential guide for anyone interested in the device.