The Android Developers Blog reported today that changes to the software are reducing the amount of data consumed when updating apps on an Android device. Earlier this year, Android switched to the bsdiff algorithm for updates, reducing the size of app updates by 47% when compared to apps updated in full APK size.
But Google’s software engineers have improved upon this with a new system called File-by-File patching. Using this technique, the size of an app update could shrink 65% to as much as 90%. As a result, less data is consumed while updating. Of course, using a Wi-Fi network would save … – Source
File-by-File patching shrinks the size of Android app updates, resulting in data savings
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