Smartphones are invented to aid different tasks, from graphically intense games to helping users get their work done from anywhere. Specifically, Android users are downloading a huge number of apps and games on Google Play and when updating these apps, it just takes a matter of a few seconds; but now, as the apps and games' sizes increase, the updating and downloading processes get heavier and slower.

Thus, Google has implemented a new technology to aid this problem through file-by-file patching --- reducing the size of app updates by 65% in average.

Android users have been more concerned on the memory and data capacity and usage of their smartphones. On the other hand, developers are confronted with expectations of delivering great user experience --- to maximize the device hardware, while making sure that Android users can download, install, and open apps or games as quickly as possible or even faster.

Google has switched to a new compression algorithm earlier this year to address this issue. It is a new compression algorithm, Delta, which Google claimed to reduce the size of app updates from Google Play by 47% on average. Google has made even bigger progress through an app updating technique called File-by-File patching that makes app updates 65% smaller on average in comparison with the full app.

As a result of this new technique, the overall data savings is up to 6 petabytes per day, making the internet less traffic for Android users. For example, it takes 17.5MB for Google Maps update; but now, with File-by-File patching applied, it is now reduced to 9.6MB. Google is limiting the use of this technique to auto-updates only; those updates that happen in the background, most likely at night when the phone is on standby mode and unused. This ensures Android users wouldn't have to wait long for apps to auto or manually update, according to Mashable.

The purposes of these changes are to save data and make Android users and developers happy with their apps. In addition, it will allow them to use a little data for app updates. For developers, they don't need to do anything --- the reductions on their app update size are free of charge.