No Bluetooth signal can be searched in the phone Bluetooth settings.
Answer:
Step 1: Check whether the wiring and power supply are properly connected (ensure that no other mobile phone is connected to the device)
Step 2: Turn off the control box, restart it, and search close to the control box. If the device is still not found, replace the control box
Step 1: Check whether the wiring and power supply are properly connected (ensure that no other mobile phone is connected to the device)
Step 2: Turn off the control box, restart it, and search close to the control box. If the device is still not found, replace the control box