Google’s Circle to Search feature is now available for three Nothing smartphones, the Nothing Phone (2), Nothing Phone (2a), and Nothing Phone (2a) Plus. To use the feature on these phones, long-press the Home button with 3-button navigation or the navigation bar with gesture-based navigation. Settings can be found in the phone’s settings menu.
The update is available for the Nothing Phone (2) running Nothing OS 3.0 build Pong-V3.0-241207-0124 and the Phone (2a) running Pacman-V3.0-241210-2057, both of which have received the stable Nothing OS 3.0 update based on Android 15. The Phone (2a) Plus is still in beta and can use Circle to Search with a specific build.
Users who are unable to access the feature may need to restart their device. Nothing has promised to release the stable update for the Phone (2a) Plus in early 2025. Other phones, including those sold in Japan, will support Circle to Search after upgrading to upcoming NOS 3.0 builds.
Source: https://www.gsmarena.com/nothing_phone_2_phone_2a_phone_2a_plus_circle_to_search_feature_update-news-65887.php