ASTRO S451, Руководство пользователя

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mobile network. Move to a location where the network signal is more
stable;
• When using a headset, check the connection of the headset (wires),
make sure that you are using the headset recommended by the
manufacturer
.
Poor sound quality during a conversation
• Make sure that nothing blocks the access to the device's internal
antenna ;
• The problem may be due to insufficient signal strength of mobile
network. Move to a location where the network signal is more stable
.
A number from your contact list cannot be called
• Make sure that the phone number is recorded correctly and in
accordance with the regional standards of the mobile networks;
• Make sure you have not set call barring for this phone number .
No sound
• Make sure that the sound reproduction is included in the basic
system settings;
• Make sure that the volume is set to the maximum (or desired) level.
To increase the volume, use the button of its adjustment;
• Check whether the file you play is not damaged. Try playing a
different file from a different directory
.
Transport and Storage
Packed telephone can be transported in closed vehicles of any kind
at a temperature from - 25°C to +35 °C, with its protection from the
direct impact of the precipitation, solar radiation, and mechanical
damage. The device keeps the performance and parameters under the
influence of climatic and mechanical factors:
• ambient temperature from -2 0 °C to + 80 °C;
• relative humidity 65% at +20 ° C and 80% at +25 °C .
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