Apple has released iOS 9.3.4 for iPhone, iPad, and iPod Touch and is available for a download. The iOS 9.3.4 update is an important security update for iPhone, iPad, and iPod Touch users.
The latest iOS update can be downloaded OTA or via iTunes on PC/Mac.
Update iPhone, iPad To iOS 9.3.4
You can download and install iOS 9.3.4 via OTA on iPhone, iPad, and iPod Touch.
Launch Settings app from your Home screen.
Now, Tap on General.
Tap on Software Update.
Tap on Download and Install.
You can also install iOS 9.3.4 via iTunes by taking a backup of iPhone, iPad using iCloud and iTunes.
iOS 9.3.4 IPSW Direct Download Links
Jailbreakers should avoid installing iOS 9.3.4 on iPhone, iPad as Apple has patched Pangu iOS 9.3.3 jailbreak.