Language learning app Duolingo has apparently been using the iPhone's Live Activity feature to display ads on the Lock Screen and the Dynamic Island, which violates Apple's design guidelines.

Understand why testing must evolve beyond deterministic checks to assess fairness, accountability, resilience and ...

Update: January 16, 2026 (8:30 AM ET): Android skins are always changing, so we’ve updated our ranking as well. Some of the more notable changes include ASUS dropping a few spots, while vivo, HONOR, ...