Modern smartphones have evolved beyond their original function as communication tools to serve as versatile digital assistants. In this study, we evaluate and compare the 3D scanning accuracy of light detection and ranging (LiDAR) sensors embedded in various smartphone models under diverse real-world conditions. To replicate real-world conditions, scanning experiments were conducted across different distances, lighting environments, and surface materials. The exported 3D models were subsequently analyzed using SolidWorks to quantify geometric deviations from the corresponding physical objects. Throughout the study, it was observed that the absolute error across all measured directions remained below 1.1 mm, while the relative error did not exceed 2.12%. These results indicate that smartphone LiDAR systems are capable of satisfying the accuracy demands for typical use cases such as dimensional assessment and 3D reconstruction.