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Discover What’s Hidden Inside Your Smartphone

These days, making calls is a small part of what you do on your smartphone. The computer in your pocket can help you buy groceries, monitor your health, snap a picture and share it with friends, work at home — even find your car in a crowded lot. Scores of surprising features are tucked inside your phone.

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$12 for your first year when you sign up for Automatic Renewal

Get instant access to members-only products and hundreds of discounts, a free second membership, and a subscription to AARP the Magazine