Another factor to consider is how good and how loud you want your smart TV to sound. The sound quality and volume of the speakers built into the TV depend on the size, design, and technology of the TV. Generally, thinner and smaller TVs have weaker and quieter speakers, while larger and thicker TVs have stronger and louder speakers. However, the sound quality and volume of the speakers may not be enough to satisfy your ears, especially if you want to enjoy surround sound or high-fidelity audio. In that case, you may want to invest in a soundbar, a home theater system, or a pair of wireless headphones that can connect to your smart TV. To connect your smart TV to other devices, such as sound systems, gaming consoles, or streaming devices, you need to check the ports and wireless options that the TV has. Some of the common ports are HDMI, USB, optical, and audio. Some of the common wireless options are Wi-Fi, Bluetooth, and NFC.