The truth is that there are not many users who install applications like Lookout, their reasons are such as installing an antivirus that it will consume resources and battery.
If you are careful in the applications that are installed on a smartphone, you should not worry about install a Lookout-type application, since the risk of infection is very low. Even so, Samsung has reached an agreement to install Lookout on its next models.
Perhaps when Lookout is launched on Samsung devices, most users will know how to disable it in the system settings. Anyway, Samsung's intention is to offer more security to those potential users as they are entrepreneurs, offering security systems such as Knox data segregation. And Lookout is another way to secure the terminal.
An Android terminal, if you know what is installed on it, it can be of the most secure devices that can be found, separating extensively from what a PC has been and is in this sense. Anyway, Samsung wants to provide services that protect its terminals even more than they are today.
We face the first time a smartphone manufacturer Android reaches an agreement to add antivirus in all its models, an example that could be followed by the different companies that make up the Android scene, such as HTC or LG.
Mobile devices have more and more power and are capable of having more applications running in the background, so an antivirus should not worry much. The only big drawback would be the battery level, since this step taken by Samsung would force many to deactivate this function from system settings, since in the long run, an application of this style drains the battery of our terminal.
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Source - Android Police