What is the latest iPhone software?

Update your iPhone, iPad, or iPod touch

• If you have an iPhone 5S or 6/6plus, the highest you can update to is 12.5.5

• If you have an iPhone 6S through 13, you can update to 15.6

Go to Settings > General > Software Update.

Update your iPhone, iPad, or iPod touch using WiFi -

Update your iPhone, iPad, or iPod touch - Apple Support

Update using your computer -

Update iOS on iPhone - Apple Support

Unless you jailbroke your phone, no one can control your phone.

I listed the latest software versions in my first post.

"i cant even update my software kindly let me know which is the latest software,? my phone just shutdown and updated itself yeaterxay"

That statement completely contradicts itself.

Tatty555 - can you please provide more information? Why do you believe that?