![background image](http://html.mh-extra.com/html/samsung/gt-b5210u/gt-b5210u_user-manual_340725118.webp)
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You select a contact to call, but the call
is not dialled
• Ensure that the correct number is stored in
the contact information.
• 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 on top 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,
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.
Your device is hot to the touch
When you use several applications at once,
your device requires more power and may heat
up. This is normal and should not affect your
device’s lifespan or performance.