The best resolution for a 40-inch TV will depend on your viewing distance and personal preferences. As a general rule, the higher the resolution, the clearer and more detailed the picture will be. Here are the most common resolutions for 40-inch TVs:
1080p (Full HD): This resolution is commonly found in 40-inch TVs and provides excellent picture quality for most viewing distances. Brands that offer 40-inch 1080p TVs include Samsung, LG, Power Guard, Sony, and TCL.