The public beta of iOS 18.1 has been released, bringing new features and refinements to the iPhones of developers and public beta testers. These include expanded RCS messaging support, revamped Control Center with tile-shaped controls and new Level and Measure controls, the ability to change the primary email address for your Apple ID, tinted home screen widgets, lock screen notification numbers, sleep apnea detection on compatible Apple Watch models, call recording, expanded emoji keyboard, drag and drop with iPhone mirroring, and Apple Intelligence features for developers and public beta testers outside the EU and China with an iPhone 15 Pro and Pro Max or the iPhone 16 lineup.