Display Crack or Touch issue Reduces value Battery issue or Service Reduces value Speaker or micro phone issue Reduces value Wi-Fi/Bluetooth/GPS faulty Reduces value Charging Port Defect Reduces value Power/Home/Volume Buttons Faulty Reduces value Finger Print Sensor issue Reduces value Network connectivity Issue Reduces value Front Camera Faulty Reduces value Back Camera Faulty Reduces value Face Sensor Faulty Reduces value Home or Silent Button Faulty Reduces value Proximity sensor not working Reduces value Vibrator is not working Reduces value Copy display Reduces value Camera glass broken Reduces value