Hi,

If you do not have an A/V app installed on your phone, here is a link to just one that is available.

Download, install and then run the A/V app to test for and remove any viruses etc.,and see what it tells you.

There are others that may suit you better, just search online.

Here is a link to an app that tests for malware. Do the same as above, download, install and then run the app.