Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. Mi 4S 55 features a 55 Inch (139 cm) screen while Philips 58PUT6604/94 comes with 58 Inch (147 cm), which can make a noticeable difference depending on your room size and viewing distance. Mi 4S 55 and Philips 58PUT6604/94 are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content.

Verdict: Choosing between Mi 4S 55 and Philips 58PUT6604/94 depends on your usage, whether you prioritize display quality, smoother motion, or smart features.