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Once all the Dr.Web components are downloaded, the Anti-theft verifies whether the inserted SIM cards are on its trusted list. If they are not, the device is locked until a password is entered.
After you've entered the password and unlocked your device, you will be able to use a notification dialogue to add a new SIM card onto the trusted list.
Upon the Anti-theft’s initial launch, the SIM card currently in use on a device is regarded as trusted by default. This may come in handy if you’ve installed Dr.Web for Android but haven’t been using the Anti-theft and now want to enhance your device's security.
Important! If your device is running Android 5.1 or later and two SIM cards are installed on it, both SIM cards will be added onto the trusted list automatically when the Anti-theft is run for the first time. For earlier Android versions, only the active SIM card appears on the list automatically. The second one must be added onto the list manually.