Automatic: The system selects the available network automatically.
UMTS/HSPA Only: The system will only select the UMTS/HSPA network.
GPRS/EDGE Only: The system will only select the GPRS/EDGE network.
4. SMS Settings
SMS Center Number: Set the corresponding SMS center number the network
supplier. You must input the correct SMS center number to use the SMS
properly and the number will be provided by the network supplier. Please enter
the country code before the number.
SMS Validity: Set the time limit for saving SMS in the network side. (This
function needs network supports.)In option：12 hours/A day/A week/The
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