The iOS 10.3 software update was released last week and now Apple has released another update in the form of iOS 10.3.1.
The iOS 10.3.1 is a minor update it is around 30MB in size and it comes with some bug fixes and also security improvements.
According to Apple the update fixes a security issue related to WiFi, although Apple did not reveal exactly what the issue was.
The iOS 10.3.1 software update has been released as an over the air update and it is now available for the iPhone, iPad and iPod Touch.
You can check to see if the update is available on your device by going to Settings > General > Software Update or by connecting your device to iTunes.
Source Apple