Polaroid F280 Manual page 7

Delete call logs
Press the LSK to select "OK" to enter sub-menu to delete call records.
Call timers
See SIM 1 and SIM 2 call timers.
Call settings
Call waitting
Open this feature，during the call if the new call, the network will
notify you. Specific use with your network provider.

Avtivate

Deactivate
 Query status Query the function's status.
Call divert
Network Call Transfer service allows you to call a business case in a default
transferred to a phone number you specify. The features include: Divert all voice
calls，Divert if unreachable,Divert if no answer, Divert if busy,Divert all data calls.
Call barring
Into the "Call barring" sub-menu, you can set the following call barring
any combination to improve security. Some network providers may not
provide this service call restrictions, specific use, please contact your
network provider. Network provider will provide a four password so that
you can enable call restrictions.
Change the password to enter the old call barring password, set new
restrictions on the password.
Line switching
You can select Line1 or Line2.
Advanced settings
Blacklist:
1. Reject numbers in blacklist:You can select on or off.
2. Blacklist numbers:You can add blacklist numbers.
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lanch the function.
Close the function.