Device

• You cannot hear or hear the other party clearly during the call.
• The call volume decreases.
• The probability that a call is intermittent, the sound decreases, or the call is silent.
• Echo is heard during a call.
• The notification bar shows the HD icon.
• Notifications cannot be cleared in one click.
• What are the differences between the gyroscope, acceleration sensor, and gravity sensor?
• Forget the screen unlock password or pattern