Xiaomi Redmi Note 9 4G Audio and Connectivity

Audio and Connectivity

The audio experience on the Redmi Note 9 4G is enhanced by stereo speakers and a 3.5mm headphone jack that supports high-resolution audio at 24-bit/192kHz. Connectivity options include Wi-Fi 802.11 a/b/g/n/ac, Bluetooth 4.2, and comprehensive GPS support with additional systems like GLONASS, GALILEO, and BDS. The presence of an infrared port and FM radio adds to the device’s versatility. However, the absence of NFC might be a limitation for users looking for contactless payment features.