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How can I install an apk app outside of Google Play. Like if I downloaded it from another site and I try to open it, it says unable to install and I read that you have to do something to get it to work. What do you have to do?

marked as duplicate by Izzy, eldarerathis Dec 13 '13 at 15:18

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You have to go to Settings > Security and tick "Unknown Sources" or depending on your device/OS version "Allow Unknown Sources." You can then side load an apk file. It maybe a slightly different place depending on the manufacuturer. E.g. Samsung is Settings > More > Security.

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