A class-action lawsuit has been filed against Sonos Inc. in a California federal court by consumers who allege that a major software redesign of the company's mobile application rendered their existing audio hardware unreliable or entirely unusable. The legal complaint argues that the updated app suffered from severe technical bugs, frequent connection failures, and the removal of core pre-existing features such as reliable alarm scheduling, music library access, and multi-room grouping controls. Plaintiffs in the class-action proceeding are seeking legal remedies, declaratory relief, and damages on behalf of affected users who experienced disrupted home audio functionality following the controversial software rollout.