Yes, you can get viruses even if you only download from Google play, the difference is that Microsoft checks the apps more than Google does before they upload them to their store. Then there is a dicussion about how much the ativirus software on mobile phones can do, because they are sandboxed.
Google only checks apps if they get reported for problems. Otherwise, no checks - so you're at the mercy of the developer if the app hasn't been reported.
Source? How is it ppossible Microsoft checks more and we have 11 ****apps that's called Facebook?
Because Google doesn't inspect apps at all unless reported for suspicious activity.
he still said: "Microsoft checks their apps more than Google" and i can't really believe so
You don't have to believe something for it to be true.
When an app is submitted to the Play store, it is immediately available to download. When an app is submitted to Microsoft, it will be several days before it is tested and certified. I did get an app approved in just over a day once, but usually it takes 3-4 days. And yes, I have failed certification and had to fix problems and resubmit.
But all of that is really sidestepping around the OP's question. Here's the answer:
There is no antivirus for Windows Phone. It is not needed, and even if there were one to be published today, claiming to scan your phone, I will tell you right now that it is an outright lie.
In Windows Phone, apps are sandboxed. They are not aware of each other. Even if I write two apps, publish them, and get them installed on the same phone, my two apps cannot talk to each other - they have no concept of the other being there. The data that they save is sandboxed, and cannot be accessed from another app. So if there were an antivirus app published (there was once, it was removed by Microsoft), it would not work, because it would not be able to scan other apps or their info.
There is a way for apps to send data to each other, and I don't know much about it, but I do know that only those apps that expose themselves can be accessed, and only the information that the developer MADE to be accessed. For instance, the makers of MetroTube allow other developers to send links to their app, so they can play videos in MetroTube. An example would be the WPCentral app - if you look at an article with a video, you can swipe to the right, tap the button for the video, and if you have MetroTube installed, it will give you the option to play the video in MetroTube. But that still doesn't expose a way to get into MetroTube's data, or scan the app for anything. It just means that MetroTube is set up to receive.
The antivirus app that I mentioned above that had been published was AVG Antivirus, and it was published probably more than two years ago. Being that no app can scan other apps, a well-known developer got suspicious, did some digging, and learned that the app was reporting your location back to its server. When that information became known, Microsoft pulled the app. I believe they also started checking for that kind of activity as well, when they test for certification.