Update my iOS 13.0?
Update
Update
These are the iOS options based on iPhone Model --> You need to Identify your iPhone model - Apple Support
Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support
Refer to the pic for more...
Assuming you have a compatible device, see: Update your iPhone, iPad, or iPod touch - Apple Support
And: If your iPhone, iPad, or iPod touch won't update - Apple Support
If the above Apple articles do not help, please post back with relevant information.
Update
Update my iOS 13.0?