Repairing a Severely Damaged Smartphone: Speaker, Wi-Fi, and Microphone Issues Fixed! In this video, we take on the challenging task of repairing a smartphone that's neither an iPhone nor a Samsung, purchased for 7,800 yuan. The phone has been severely dropped, leading to multiple issues like a broken speaker, Wi-Fi not functioning, and the microphone failing to work. First, we remove the back cover and discover that it's been replaced, indicating the phone has experienced a major fall. After di