Zte A16 User Manual page 49

All Except Home: Bar international calls except local call.
Incoming Calls: Bar all incoming calls.
Incoming if Abroad: Bar all incoming calls when roaming abroad.
Outgoing Calls: Bar all outgoing calls.
After choosing one of the above options, select SELECT to restrict any of the
following services:
All Services: Restrict incoming calls, voice calls and short messages.
Voice Calls: Only restrict voice calls.
Data: Only restrict data.
Fax: Only restrict faxes.
Messages: Only restrict short messages.
All Except Msgs: Restrict other services except short messages.
When you have set types of restriction services, the following can be chosen:
On: The restriction is functional.
Off: Delete the restriction.
Status: Query if the restriction is set.
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