iOS 7.1.1 version is compatible with iPhone, iPad, and iPod Touch. The changes include better Touch ID fingerprint recognition, fixes for keyboard responsiveness, and addressing issues when using Bluetooth keyboards and VoiceOver simultaneously.
However, Apple has also made internal software optimizations. Therefore, experts have observed that iPhone 5 running iOS 7.1.1 has significantly improved battery life.
Kingsley – Hughes, from ZDNet, monitored iPhone 5 battery life since iOS 6. He noted that with iOS 6, the iPhone 5 battery dropped from 100% to 74% after 6 hours of use. While iOS 7 had a minor negative impact on battery life, it was quickly addressed. iOS 7.1 caused the most battery drain, with the battery dropping from 100% to 48% after 6 hours of use.
However, with iOS 7.1.1, Kingsley – Hughes reported that his battery still had 76% remaining after 6 hours of use. It even performed better than when using iOS 6.
Great news for iPhone users! The latest iOS 7.1.1 update brings extended battery life. Get the details here: iOS 7.1.1 Update