Tap the lower right corner to bring up the screen-lock selector, than tap it again to choose the setting you want: locked or unlocked.
(Credit: Screenshot by Rick Broida/CNET)
As you probably know, you don't need a Kindle to read Kindle e-books. You need only the Kindle app, which is available for Android and iOS devices, among others.
And if you've ever plunked down in bed or on the couch to read something, you've probably discovered that the screen will automatically rotate between portrait and landscape orientations depending on how you hold your phone or tablet. This can be useful, or it can be a huge hassle -- especially if you move around a lot and don't want the screen constantly shifting back and forth.
Fortunately, it's a simple matter to disable screen rotation in the Kindle app -- and enable it again should the need arise. The process is the same on both Android and iOS devices.
Step one: Run the app, then load any book.
Step two: Tap the lower right corner of the screen. You should see a little padlock icon.
Step three: While it's still visible, tap that icon to t... [Read more]