I have only just bought a S/H Iphone 4s, and there were no instructions with it, and I must say I am more than pleased with this book. Excellent photographs, and each function is dealt with in clear detail. I will soon be as adept with it as my grandchildren are !!! I couldn't have made a better choice. Money well spent...!!
Having just entered the iPhone era this book has been a great buy. I'm just used to having a phone for calling, texting and photographs but now with the help of this book I am using the iPhone for much more. If you don't want to keep asking your teenager for help, get this book. It will save your sanity.
I am new to the technology of an iphone and this book has been an enormous help in getting to grips with it. You can dip in and out of the book as required and learn as you go along. Written in easy to understand instructions, would recommend it to all, helpful tips throughout as well.