[-CBCentralManager scanForPeripheralsWithServices:options:] only returns peripherals that actively advertise that they support a certain service.
If the service you are looking for is not advertised by the peripheral, you need to connect to it, and then discover the service you wish to access.
As space in the advertisement packets (that are processed when scanning) is limited, typically only the major service is advertised. Device Information Service is typically available on most BLE peripherals, and, therefore, is normally not advertised. However, you will see this service once connected to the peripheral with [-CBPeripheral discoverServices:].
As a side note, just a minor Objective-C reminder:
You can use initializer syntax to reduce the verbosity of your code:
[self.centralManager
scanForPeripheralsWithServices:@[[CBUUID UUIDWithString:DEVICE_INFO_SERVICE_UUID]]
options:nil];