How to check for virus my iPhone

There are no viruses that affect iPhones unless you jailbreak them. Things go wrong with iPhone. The cause is usually something much more mundane.

Go to Settings>General>iPhone Storage. What does it say is taking up all the space? Have you followed any recommendations that appear on that screen?

Svetlalikaya wrote:

Yes i did follow, as i said i deleted a lot of apps and 5000 pictures bit still the same

Go to Settings>General>iPhone Storage. What does it say is taking up all the space? A screenshot would be helpful.

Also, deleting photos doesn't free up space for 30 days unless you go to the "Recently Deleted Folder" and delete them permanently.

As there are no viruses that can infect an iPhone, you don’t have a virus on your iPhone. And, for the same reason it doesn’t have a virus, a virus scanner cannot do anything useful because it would have to act like a virus to see content that it didn’t own.

If there isn’t enough storage that is a serious problem that you have to address by removing content, and cleaning out “recently deleted” folders, then restarting your iPhone.