Fixed Dialing Number
Fixed Dialing Number(FDN) is a service mode of aGSMmobile phone'sSIM card.[1]Numbers are added to the FDN list, and when activated, FDN restricts outgoing calls to only those numbers listed, or to numbers with certain prefixes.[1]A notable exception is that emergency calls to000, 112, 911, 999and the like are exempt.[2]Incoming calls are not blocked by FDN.[1]
One practical application of FDN is forparentsto restrict the phone numbers their children can dial.[2]The SIM card's PIN2 must be entered beforehand or when applying such settings.[2]
References
[edit]- ^abc"What Is FDN in Samsung Phones?".Samsung.2020-10-13.Retrieved2022-04-19.
- ^abc"Calling Features on Your Samsung Galaxy Phone".Samsung.Limit Calling to Specific Numbers.Retrieved2022-04-19.
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