Way back in the day, app updates in Google Play would be the whole new APK. That changed back in 2012, and Google has been working to reduce the size of updates ever since.
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Google figures out how to reduce app update size by 65%
Way back in the day, app updates in Google Play would be the whole new APK. That changed back in 2012, and Google has been working to reduce the size of updates ever since.
Full article