In Pictures: 20 security and privacy apps for Androids and iPhones

Encrypted storage, malware scanners, missing-phone-finders and more: Here are 20 apps to help protect your smartphone, your privacy and your data.

Gallery Lock

Gallery Lock provides privacy for picture and video files by hiding them in individual, password-protected folders.

Available for: Android

Cost: Free

Average marketplace rating: 4.5 stars

7 of 20
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