At last, antimalware software for your phone from a source you know.
Introducing MSDefender for your phone.

Yea, the Almighty shall be thy defence, and thou shalt have plenty of silver.

— Book of Job, 22:25 

One objection I have to installing antimalware software from the web is it is difficult to know the source of the software.  Most so-called "free software" attempts to monetize use of the product one way or the other.  There are also security considerations to be weighed whenever downloading, even from your cell manufacturer's "store."  Although Apple wields greater control over what products will be hosted on its platform than does the Google/Android world, turkeys do slip in from time to time.

This past week Microsoft released MSDefender for any device or Operating System. All that  is required is a Office 365  or Windows 365 subscription. Since Microsoft has already monetized the use of their products by the simple fact that the user has a paid for subscription, there are no ads or adware installed. 

What follows shows the installation for an Android. The Windows 11 Phone Link application allowed me to take screen shots of the cell phone screen from my laptop.  Google and Microsoft are making more and more strategic alliances. The Phone Link app is one example.

I must add, like Windows Defender for desktops, if MSDefender detects another antimalware application present on the device, MSDefender will not start.  If you already have an antimalware application on your phone, and you want to try MSDefender, I strongly suggest you uninstall that other app before installing MSDefender.  If you wish to go back after installing MSDefender, then simply uninstall MSDefender and reinstall the other app that you prefer.

First  we must go to our cellphone vendor's Store and search for Microsoft Defender.  After the app downloads, open the Microsoft Defender app. After installation you will prompted in enter your Microsoft account information.  A Microsoft account is required.

Once you have been logged into your MS account, the MSDefender app will start the setup process for your phone. Agree to the Terms, then Click the Blue button that takes you through the setup step by step.  You must complete each step of the process to complete the setup. Phishing via SMS or Smishing is becoming an enormous problem. I find it good to know much this crap will be filtered.

Next comes the "permissions" stage of the setup.  These steps might seem overly intrusive. For the application to monitor your activity on the Internet and keep you safe from web based threats, then the app must be able to track where you go and intend to do while using your phone on the web. You can skip this step if you wish, but the full protection the app offers will not be available.

Once permissions are all setup, the last step of the setup process is run a quick scan of your phone for any present threats.

And you are now all setup with Microsoft Defender for your smartphone. The final screen that refers "devices aren't fully protected" only means I did not install this Defender on my notebook because Windows 11 has its own antimalware software.