Can smart phones catch viruses?

Have you tried turning it off for a minute ....... Kinda like a reboot.

 

turn off, wait 5 minutes turn it back on.... and close all background apps running..

 

Theres an app you can install called SD maid. Its suppose to clean up all the dead files an reduce used space on your phone and make it run better. I tried it, freed up some space. I cant really tell if it runs faster. I dont have much patients with the electronics stuff. Mine is a Galaxy S4. Been having to charge it twice a day now. Think the battery is on its way out.

 

Pretty much next to impossible.
I've surfed about thirty thousand hours of disgusting and degrading porn sites; only virus I ever caught was a cold.

 

Yes, they absolutely can.

 

No known android viruses, but yes to malware, which is just as bad.
Read:
https://www.lookout.com/resources/know-your-mobile/android-virus

 

Yes, they can.

1) As other's have suggested, reboot the phone first. See if that helps.
2) Review the most recent apps that you've installed. Remove them one by one and check the results.
3) If it's Android, with a newer version of the system, go to Settings, Battery. See if there is an app sucking up a lot of juice that shouldn't be. (Normally you should see Scree, Calls, WiFi, Android at the top of the list)
4) If all else fails back up your stuff and do a factory reset.