Re-enter and save the number (if necessary).

Another caller cannot hear you speaking

Ensure that you are not blocking the built-in microphone.

Move the built-in microphone closer to your mouth.

If using a headset, ensure that it is properly connected.

The sound quality of a call is poor

Ensure that you are not blocking the internal antenna and the Bluetooth antenna. The internal antenna and the Bluetooth antenna are located at the bottom of the device.

When you are in areas with weak signals, you may lose reception. Move to another area and try again.

The battery does not charge properly or sometimes your device turns itself off while charging

Disconnect the device from the charger, remove and reinstall the battery, and try charging again.

The battery terminals may be dirty. Wipe both gold-coloured contacts with a clean and soft cloth and try charging the battery again.

If the battery no longer charges completely, dispose of the old battery properly and replace it with a new battery.

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Samsung GT-i8000L user manual Another caller cannot hear you speaking, Sound quality of a call is poor