All Android devices that support 64-bit apps also support older 32-bit apps. in the Android Developers BlogGoogle has confirmed that the Pixel 7 and Pixel 7 Pro are the first Android phones to exclusively support 64-bit apps.
Google explains that dropping support for 32-bit apps has a few benefits. It not only improves RAM usage but also improves performance and security. Google expects that more and more devices will eventually lack support for 32-bit apps. 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 configuration is faster because 64-bit applications can access instructions and resources not available to 32-bit applications. It also claims that modern CPUs can offer up to 25% faster performance when 32-bit support is dropped. Additionally, this configuration can free up 150 MB of RAM – which can be used whether or not 32-bit applications are running.
Developers are encouraged to start testing apps and updates for 64-bit-only devices. There are developer tools already available to check for compatibility issues with the new configuration.
Google reminds us that 32-bit-only devices will continue to run Android Go, Android TV, and Android Wear, and that 32-bit APIs should continue to be supported.