The Apple iOS 9.3 beta 4 was seeded to Apple developers for testing it out. Since the first beta was released, the screenshots on the website indicated minor UI tweaks and the Night Shift mode which is basically a native f.lux, a feature available after jailbreak, on the iPhone.
3The Notes App can be protected with TouchID. Apple is trying hard to improve the user experience in every aspect. The first beta of 9.3 was was released about45 days ago showing that the coming update is going to be significant for the daily users. Another feature in the Photos app is that you can make a duplicate of the live photo keeping the live photo as it is. For the Apple Watch, WatchOS 2.2 will be released along with iOS 9.3 with which one iPhone can be paired to multiple Apple Watches. In the News app, the For You section makes a personal collection of trending news which is different for different people.

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The Health app will now let you download your movement data. The UI has changed a bit and the Activity widget is newly added. This comes from the Activity app which shows the steps taken, the number of stands taken in 1 hour and exercise of the overall day, all of which comes from the Apple Watch. In the Wallet app, if a pass has its own app in the App Store it can be opened right from the Wallet from the bottom right icon.

4Siri now knows and understands Malay, Finnish and Hebrew languages. For the iPhone 6s and 6s plus series, the force touch shortcuts have been added to apps which did not have shortcuts before. The Quick actions for Setting have the Bluetooth, Wi-Fi, Battery and Setting the wallpaper. Same goes with other apps such as the App Store, Weather and other native apps with more shortcuts.
2Coming to the controversial feature of the Night Shift mode, a copy of the f.lux app. Apple disapproved their app in the App Store so to get it one should jailbreak their phone in order to change the color complexion of the screen based on the time of the day (night or day). f.lux is okay with Apple implementing this feature in the OS. The preview screenshot was showing the toggle in the Control Center making it handy and easily accessible. With this preview of Apple iOS 9.3 beta 4, we now just have to wait for the main release of iOS 9.3 to the general public.

Apple is also releasing this update to fix the ‘1 January 1970’ bug which causes iPhone to crash. With this preview of Apple iOS 9.3 beta 4, we now just have to wait for the main release of iOS 9.3 to the general public.