As an AI language model, I can only provide facts gathered from various sources to produce an article about everything you need to know about iOS 8. Please take note that the information provided here may not be updated in some cases since iOS 8 is an outdated software by now.

Apple Inc. released iOS 8 on September 17, 2014. It is the eighth major release of Apple’s mobile operating system. The software was introduced with a lot of new features and improvements compared to its predecessor, the iOS 7.

Compatibility

iOS 8 is compatible with some of the older Apple devices, which suggests that if you’re running an older device like an iPhone 4s or an iPad 2, you’re not out of luck. Here is the list of compatible devices with iOS 8:

iPod touch (5th gen) and later
iPhone 4s and later
iPad 2 and later
iPad mini and later
iPad Air and later

Features

iOS 8 introduced a lot of new features, including:

1. A New and Improved Siri:

The digital assistant Siri has been upgraded, and it comes with new voice options with male and female voices. Siri is now more powerful and can perform tasks like calling you by your name or identifying the unknown song playing in the background.

2. Health App:

The Health app is one of the significant changes that came with iOS 8. It’s a platform that integrates medical data from various health apps and medical devices. The Health app is capable of tracking various metrics like heart rate, sleep, calories, and much more. Additionally, the app allows you to create an emergency contact list.

3. QuickType Keyboard:

Apple introduced the QuickType keyboard, which offers the predictive text feature. With this feature, the keyboard suggests the most likely choice of the word you might be typing based on your previous message.

4. Improved Camera and Photos App:

iOS 8 added better camera functionality with new features like time-lapse, self-timer, and burst mode. It also introduced the new photos app that groups your photos based on time, location, and people in the picture.

5. Continuity:

iOS 8 comes with Continuity, which allows for integration and connectivity between Apple devices like Mac and iOS. A user can receive text messages or phone calls on the computer through the iPhone.

6. Extensions:

iOS 8 brought extensions to the iPhone, which are third-party apps that can integrate into the Apple apps. With these extensions, users can add to the overall functionality of the Apple apps, like adding the Instagram extension to the Photos app, making it accessible to photographers.

Security

iOS 8 introduced a lot of improvements to the security of the operating system. One significant security aspect is the two-factor authentication. With this security measure, a user needs to provide an extra security code in addition to the password to access the services. Additionally, Find My iPhone has also become more difficult to disable, making it harder for thieves to steal iPhones.

Conclusion

Overall, iOS 8 introduced a lot of new features, improvements, and security-related measures that have made the operating system much better. With the new features, devices running iOS 8 became more powerful and able to perform numerous tasks. Although iOS 8 is outdated and is no longer supported by Apple, it is still important always to update your phone to the latest operating system to ensure the best user experience and information security.