Protect your device
Learn how to protect your device, and keep your data secure.
Set your phone to lock automatically
Want to protect your phone against unauthorised use? Define a security code, and set your phone to lock itself automatically when you're not using it.
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Select
> Settings > Phone > Phone management and Security settings > Phone and SIM card . -
Select Security code, and enter a security code. A minimum of 4 characters is required, and numbers, symbols, and upper and lower case letters can be used.
Keep the security code secret and in a safe place separate from your phone. If you forget the security code and your phone is locked, your phone will require service. Additional charges may apply, and all the personal data in your phone may be deleted. For more information, contact a Nokia Care point or your phone dealer.
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Select Phone autolock period, and define the length of time after which the phone is locked automatically.
On the home screen, press the power key 
, select Lock phone, and enter the security code.
Slide the key lock switch, enter the security 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 phone using an encryption key.
Select > 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 phone unless you have to
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Switch your phone off
If you haven't set your phone 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.
Related topics
Lock your phone remotely
Forgot your phone at work and want to lock it to prevent unauthorised use? You can lock your phone remotely using a predefined text message.
Enable remote locking
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Select
> Settings > Phone > Phone management and Security settings > Phone and SIM card > Remote phone locking > Enabled . -
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 phone remotely, write the predefined text, and send it to your phone as a text message.
To unlock your phone, you need the lock code.