Nokia 2720 Fold - How do I set the security level on my Nokia phone (Series 30/40)?

Select Menu > Settings > Security (or Security settings) > Security level. Enter your security code and select OK.

  • Select Phone, and the phone will request the security code whenever a new Subscriber Identity Module (SIM) card is inserted into the phone.
  • Select Memory, and the phone will request the security code when the SIM card memory is selected and you want to change the memory in use.