Android can automatically archive apps you aren't using
 

After a teaser last year, Google is ready to help you save space on your phone by shelving unused apps. The company is rolling out an auto-archive feature that removes key parts of apps without erasing personal data. So long as an app is still available on the Play Store, you just have to tap its icon to re-download the missing pieces. This can free as much as 60 percent of an app's space, Google says.

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