Device

• The router cannot be connected.
• Reason for WLAN Connection Failure
• Connecting a VPN
• Bluetooth call interruption, noise, echo, and noise
• When the Bluetooth headset is playing a game, the game cannot play smoothly.
• The call is not clear on the Bluetooth earphone.
• No sound from the Bluetooth earphone
• After connecting the Bluetooth earphone to the mobile phone, do not listen to music.