Secrets codes
Blocking list *#3333*#
Time connected *#2558*#
Flags,something *#3377*#
Security code *#7489*#
Service Provider Lock
The Service provider (SP) lock is used to lock the cell phone to the SP's SIM card. Once the cell phone is locked to a specific operator, if one inserts a SIM card from a different operator the phone will refuse to accept it! The cell phone will however accept another SIM card from the same operator.
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