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What Does the FDN (Fixed Dial Number) Feature Do On My SGH-I637 (Jack) Phone?

April 26, 2017Dial fdn feature fixed Jack phone sgh-i637

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What Does the FDN (Fixed Dial Number) Feature Do On My SGH-I637 (Jack) Phone?

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The FDN (Fixed Dial Number) mode, if enabled and supported by your SIM card, allows you to restrict your outgoing calls to the limited set of phone numbers that are included in the Fixed Dialing Number list.