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Ensure the Network is working properly.
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Ensure the user name and password is correct.
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Ensure the internal antenna is not blocked.
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Ensure the tablet is within the proper distance of the Network
and there is no wall or other obstructions between.
3. Unable to connect 3G or weak signal
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Ensure the 3G USB Dongle is connected to the tablet
correctly and the SIM card with enough fees to access to the
Internet.
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Ensure the 3G USB Dongle is among the models supported
by the tablet.
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Ensure you are in an area that gets access to the signal
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Check if the “Wireless and Network” is correctly set.
4. Indicator light does not turn on after 3G USB dongle is
plugged in.
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Check whether the OTG cable is connected properly, 3G