Huawei E5771h-937 Quick Start Manual page 4

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Signal indicator
Green: Strong signal.
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Yellow: Weak signal.
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Red: No signal.
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
Power supply port
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Micro USB port
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Lanyard hole
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Battery indicator
Four indicators steady on: The remaining battery is 75% to 100%.
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Three indicators steady on: The remaining battery is 50% to 75%.
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Two indicators steady on: The remaining battery is 25% to 50%.
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One indicator steady on: The remaining battery is 10% to 25%.
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Fast blinking (twice per second): less than 10% battery remaining.
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Slow blinking (once per second): charging.
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