The old iPhone has improved battery life after upgrading to iOS 12.3.1
iOS 12.3.1 Improves Battery Life of Older iPhones
facetime draining battery when not in use… - Apple Community
![iOS 12.3.1 - Battery Draining Fast After Update iPhone [Fixed] - YouTube](https://i.ytimg.com/vi/5fg7X5nP79w/maxresdefault.jpg "iOS 12.3.1 - Battery Draining Fast After Update iPhone [Fixed] - YouTube")
iOS 12.3.1 - Battery Draining Fast After Update iPhone [Fixed] - YouTube
iOS 12 - 12.4.1 Battery Draining Fast? How to Fix iOS 12.4.1 Battery Life Problems
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iOS 12.3.1 Improves Battery Life of Older iPhones
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iOS 12.3.1 Improves Battery Life of Older iPhones
How to Fix Bad iOS 12 Battery Life
iOS 12 - 12.4.1 Battery Draining Fast? How to Fix iOS 12.4.1 Battery Life Problems
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How to Fix Bad iOS 12 Battery Life
