
To protect your device from unauthorized connection, select Bluetooth > My phone's visibility > Hidden. Do not pair with or accept connection requests from an unknown device. This will protect your device from harmful content.
You can protect a memory card with a password to prevent unauthorised access. To set a password, select Menu > Tools > File mgr., open the memory card folder and select Options > Memory card password. The password can be up to 8 characters long and is case-sensitive. The password is stored in your device. You do not need to enter it again while you use the memory card on the same device. If you use the memory card on another device, you are asked for the password.
You can enhance security by locking your device. Select Menu > Tools > Settings > General > Security > Phone and SIM card > Lock code and create a 5-digit lock code. Be sure to memorize it. To lock the phone, press the Power key briefly, select Lock phone, and enter the code. To unlock your phone, you wil need to enter the code again.
If your phone is stolen or gets lost, you can lock it (and the memory card) remotely by sending a lock code via SMS. To enable remote locking and to define the text for the message, select Menu > Tools > Settings > General > Security > Phone and SIM card > Remote phone locking > Enabled. Enter the remote lock message and confirm the message. The message must be at least 5 characters long.
To back up information from the phone memory to a compatible memory card, select Menu > Tools > File mgr. > Backup. Then select Options > Back up now. The phone notifies you if the memory card does not have enough free space to create a back-up. To restore the backed up information, select Options > Restore and mark the data you want to restore.