Just like any other iOS update, open your Settings app, then go to 'General,' followed by 'Software Update.' When the update is ready, it'll appear, and you can download and install it using the on-screen prompts.
Either way, you can simply update or wipe and install it like new. If you want to get these features right away, the OTA is the best approach, but the restore image method is better if you want to get rid of any persistent bugs you've been experiencing. New features in iOS 13.0 and 13.1 you'll want to start using right away include Dark Mode, wireless mouse support, tons of changes in Safari, Collections in Apple Maps, and a completely redesigned Reminders app, to name just a few things. Ditto for the 13.1 update issued on Sept. 19, can be installed over the air or from a restore image using iTunes in macOS Mojave and older or Finder in macOS Catalina.
After months of testing, iOS 13 is available to install on your iPhone, which means over 200+ new features you can use right now.
