All Android devices that support 64-bit apps also support legacy 32-bit apps. In the Android Developer BlogGoogle confirms that Google Pixel 7 and Pixel 7 Pro are the first Android phones to exclusively support 64-bit apps.
Google explains that there are some benefits to abandoning support for 32-bit apps. Not only does it reduce RAM usage, it also improves performance and security. Google predicts that devices without 32-bit app support will become more and more common over time. Google made the move with the Pixel 7 and 7 Pro because it believes the Android ecosystem is ready to make the transition.
Google Pixel 7 Pro and Google Pixel 7
According to Google, this setup is faster because 64-bit apps can access instructions and resources not available for 32-bit apps. It also claims that modern CPUs can deliver up to 25% faster performance when 32-bit support is dropped. Additionally, this configuration can free up 150MB of RAM, which is used regardless of whether 32-bit apps are running or not.
Developers are encouraged to start testing apps and updates for 64-bit only devices. Developer tools are already available to test compatibility issues with the new configuration.
Google reminds us that 32-bit-only devices will continue to serve Android Go, Android TV, and Android Wear, and that 32-bit ABIs should continue to be supported.
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