Protect your device
Learn how to protect your device, and keep your data secure.
Set your device to lock automatically
Want to protect your device against unauthorised use? Define a lock code, and set your device to lock itself automatically when you're not using it.
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Select Menu > Settings and Phone > Phone management > Security settings > Phone and SIM card .
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Select Lock code, and enter a lock code. A minimum of 4 characters is required, and numbers, symbols, and upper and lower case letters can be used.
Keep the lock code secret and in a safe place separate from your device. If you forget the lock code and your device is locked, your device will require service. Additional charges may apply, and all the personal data in your device may be deleted. For more information, contact a Nokia Care point or your device dealer.
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Select Phone autolock period, and define the length of time after which the device is locked automatically.
In the home screen, press the power key 
, select Lock phone, and enter the lock code.
Slide the key lock switch, enter the lock code, and select OK.
If the key lock switch is out of reach, press the menu key, and select Unlock.
Related topics
Encrypt your data
Want to protect your data against unauthorised use? You can encrypt data on your device using an encryption key.
Select Menu > Settings > Phone > Phone management > Security settings > Encryption .
It may take several minutes to encrypt or decrypt your data. During the encryption process, do not:
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Use your device unless you have to
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Switch your device off
If you haven't set your device to lock itself automatically when not in use, you are prompted to do so when you encrypt your data for the first time.
Select Encryption off.
Select Encryption off.
Select Encryption on.
Select Encryption on.
Lock your device remotely
Forgot your device at work and want to lock it to prevent unauthorised use? You can lock your device remotely using a predefined text message.
Enable remote locking
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Select Menu > Settings and Phone > Phone management > Security settings > Phone and SIM card > Remote phone locking > Enabled .
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Enter the text message content. It can be 5-20 characters, and both upper and lower case letters can be used.
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Enter the same text again to verify it.
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Enter the lock code.
To lock the device remotely, write the predefined text, and send it to your device as a text message.
To unlock your device, you need the lock code.