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Step-by-step guide on how to install a SIM card into the Nokia 31 terminal.
Instructions on connecting the data adapter to the terminal for modem use.
Steps to connect the data cable between the terminal, data adapter, and PC.
Instructions for connecting the power supply to the terminal and AC wall outlet.
Specifies minimum distance for FCC RF exposure compliance with terminal or external antenna.
Describes the three LED indicators and their states during start-up, normal, and special operations.
Details LED combinations for power status, network connection, PIN, and PUK queries.
Explains LED patterns for different signal strength levels (Non-acceptable, Weak, Moderate, Good).
Details LED status for normal operation states like in-service, call on, incoming call, and messages.
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General