the iphoneYou don’t need a new iPhone 6 to get the latest Apple operating system for free. The new “iOS 9” works on the Apple 4 and 5 as well. To upgrade, tap “Settings,” then “General,” then “Software Update.” Here are a few new features that impressed us.

— “Low Power Mode” saves your battery by turning  off apps running in the background.  Find it in “Settings.” By the way, “Settings” has a new search box, making it easier to find stuff.

— Add a photo to your email by holding your finger on the message until a menu pops up. You can insert a photo or video there.

— Add your signature to an email.  Hold your finger on an image and tap to get the “Markup” menu. Tap “signature” to draw one on the screen. (You might want to autograph your own photo, like a celebrity.) “Markup” has other useful tools as well. Draw a rough rectangle around something and tap to make it a perfect rectangle.  Or draw a circle and tap to make it a perfect circle.

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