Hallo!
I suspect that my phone is infected with malware because it is really slower than what it was at first (I know phones sometimes become slower as they age and get updates, like I said: I suspect). I know there are a lot of anti-virus apps out there but my can hardly run whatsapp...
Thought I'd just put together a few points which might be able to help someone out.
With new malware being released all the time its quite possible your machine could become infected with with a new piece of malware than your AV program does not detect.
Below are a few steps and tools I have...