One of the biggest complaints ex-Android users have about the iPhone is that there's no back button. For those of us who have been living the iPhone life from the start, this hasn't ever occurred to us - there always seems to be a more elegant solution when you're using an Apple product. When it comes to going back, new converts from Android no longer have to worry.
Whether you're in mail, messages, or browsing the internet on Safari, the iPhone will allow you to go back by simply swiping right. This will take you back to the previous screen in the same way as the Android back button would. We know it's hard making the switch to a new phone and new operating system, but we're sure this little trick will help a lot of people out!