Samsung UA46F5100AR features a 46 Inch (117 cm) screen while Samsung UA48H5140AR comes with 48 Inch (121.92 cm), which can make a noticeable difference depending on your room size and viewing distance. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Samsung UA46F5100AR and Samsung UA48H5140AR are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Both models support 1920 x 1080 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs come with smart platforms that support popular streaming apps and voice control features.

Verdict: Choosing between Samsung UA46F5100AR and Samsung UA48H5140AR depends on your usage, whether you prioritize display quality, smoother motion, or smart features.