Wi-Fi turns on but constantly disconnects, gets stuck at "Obtaining IP address," or shows very weak signal even when sitting next to the router. Often accompanied by Bluetooth issues (Bluetooth won't turn on or stutters). Cause: The Qualcomm WCN3990 Wi-Fi/Bluetooth combo chip is physically damaged, often due to overheating or a short circuit in the RF (Radio Frequency) power amplifier. This is a known hardware defect in some batches of the SD636 platform.
A known issue with the Redmi Note 5 Pro involves the internal RF coaxial cable connecting the motherboard to the antenna strip in the top chassis. redmi note 5 pro wifi fix file extra quality
: Problems often arise after custom software changes. If the issue is software-related, flashing the official MIUI stock ROM or specific partition fixes usually resolves it. Wi-Fi turns on but constantly disconnects, gets stuck
Wi-Fi works, but signal is mediocre. Cause: Calibration data specific to your device's antenna (NVRAM) was wiped during an improper unlock or partition wipe. This is a known hardware defect in some