Both the Xiaomi Poco C85 4G and the Xiaomi Redmi 13x lack 5G support, and they share similar connectivity features. Both support Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac), allowing for fast wireless internet connections. They also both feature 2 SIM card slots, USB Type-C ports, and NFC support. Additionally, both devices have the same download speed of 300 MBits/s and upload speed of 100 MBits/s. The Poco C85 has Bluetooth version 5.4, while the Redmi 13x uses Bluetooth version 5.3, meaning the Poco C85 has slightly more advanced Bluetooth capabilities.
Both phones come with fingerprint scanners, support GPS, and have a compass, accelerometer, and a cellular module. The Poco C85, however, lacks a gyroscope, while the Redmi 13x includes this feature. Additionally, the Poco C85 does not have an infrared sensor, while the Redmi 13x does. Neither phone supports motion tracking, optical tracking, a built-in projector, or has a barometer or HDMI output.
Both devices support Galileo positioning and lack support for emergency SOS via satellite, crash detection, DLNA certification, 3D facial recognition, and iris scanners. Neither phone includes a stylus, and both phones do not support heart rate monitors or ANT+. Overall, the Xiaomi Poco C85 4G and Xiaomi Redmi 13x offer comparable connectivity features, with the main differences being the inclusion of the gyroscope and infrared sensor on the Redmi 13x, as well as the Bluetooth version.