Samsung GT-C6712 Switch SIM or Usim cards, ››Lock your SIM or Usim card, Management → Network

››Lock your SIM or USIM card

You can lock your device by activating the PIN supplied with your SIM or USIM card.

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In Menu mode, select Settings → Security. Select PIN lock.

Enter the PIN of your SIM or USIM card and select Done.

Once the PIN lock is enabled, you must enter the PIN each time you turn on the device.

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If you enter an incorrect PIN too many times, your SIM or USIM card will be blocked. You must enter a PIN unlock key (PUK) to unblock the SIM or USIM card.

If you block your SIM or USIM card by entering an incorrect PUK, bring the card to your service provider to unblock it.

Switch SIM or USIM cards

Once you insert two SIM or USIM cards, you can switch back and forth between each card.

To switch between SIM or USIM cards, press [] except for when the device is sending or receiving messages or data from the network.

››Activate the SIM or USIM card

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In Menu mode, select Settings → SIM cards

management → Network.

Select the SIM or USIM card you want to activate. Select Save.

Getting started

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