Set up device finders: Find My iPhone isn't just for finding your phone in the couch cushions. If your device disappears, you can put it in Lost Mode. That locks your screen with a passcode, if it isn't already, and lets you display a custom message with a phone number to help you get it back. The app comes with iPhones, but you need to set it up before you lose your phone. Look for the Find iPhone app in the Extras folder.
There isn't anything comparable built into Android phones, but Google's Android Device Manager app, along with others made by third parties, can be downloaded for free from the Google Play app store.
Back up your phone: If you do have to remotely wipe the phone's data, it's comforting to know that you won't lose all your important data. Apps such as Find My iPhone and Android Device Manager will allow you to do this, provided you set them up ahead of time.
Keep your software up to date: Software updates often contain fixes to known flaws. On iPhones, Apple prompts you to get the update. On Android, updates need to go through various phone manufacturers and wireless carriers first. But do install updates when asked.
USE ENCRYPTION
Much to the FBI's displeasure, iPhones running at least iOS 8 offer full-disk encryption by default. That means that the information stored on the phone can't be extracted — by authorities or by hackers — and read on another computer. If the phone isn't unlocked first, any information obtained would be scrambled and unreadable.
With Android, however, you typically have to turn that on in the settings. Google's policy requires many phones with the latest version of Android, including its own Nexus phones, to offer encryption by default. But, according to Google, only 2.3 percent of active Android devices currently are running that version.
SET UP DEVICE FINDERS
Find My iPhone isn't just for finding your phone in the couch cushions.
If your device disappears, you can put it in Lost Mode. That locks your screen with a passcode, if it isn't already, and lets you display a custom message with a phone number to help you get it back.
The app comes with iPhones, but you need to set it up before you lose your phone. Look for the Find iPhone app in the Extras folder.
Meanwhile, Activation Lock makes it harder for thieves to sell your device. The phone becomes unusable — it can't be reactivated — without knowing its Apple ID. The feature kicks in automatically on phones running at least iOS 7.
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