Which iPhone has the longest Battery Life?

The battery is one of the biggest concerns for iPhone users. How long will it last? Will it make it through the whole day? Which model can I use without worrying about running out of battery in the afternoon? In today’s article, we’ll detail which iPhone has the most extended battery life so you can decide which one to go for. Let’s go!

What makes an iPhone Battery Last Longer?

When determining which iPhone has the most extended battery life, several factors must be considered to reach a conclusion. These are the key factors that influence an iPhone's battery life:

  1. Size of the iPhone: The larger the iPhone, the bigger its battery capacity. Therefore, larger iPhone models tend to have a longer battery life.
  2. Processor Generation: The processor plays a crucial role in managing the battery and its consumption. A newer processor is more power-efficient, allowing your battery to last longer.
  3. Personal Usage: Battery life also depends on how you use your iPhone. Factors such as screen brightness, the apps you use, and your area’s network coverage all have an impact.

These are the three main aspects to consider when determining which iPhone has the most extended battery life. Don’t worry! At iSTYLE UAE, we’ve done our calculations to tell you the approximate battery life for each iPhone model.

The Results: iPhone with the Longest Battery Life

We’ve analyzed the battery life of the latest iPhone models. All phones started at 100% battery charge and were disconnected at the same time. Additionally, they were all set to the same screen brightness level.

The test consisted of playing videos until the battery was completely drained. Video playback simulates typical iPhone usage, like browsing the internet, messaging, using social media, and more.

In the image below, you can see the results of the test. The number corresponds to how many hours the iPhone lasted while powered on.

iPhone Battery

As you can see, the most recent iPhone models, especially the larger ones, have the most extended battery life. The iPhone 16 Pro Max lasts up to 33 hours of video playback. The iPhone 16 Pro and iPhone 16 Plus last 27 hours, while the iPhone 16 lasts 22 hours. Close behind is the iPhone 15, with a battery life of 20 hours.

In this article, we analyzed battery life. Want to know more about the differences between iPhone models? 

Check out our iPhone comparison tool to see how they differ point by point.

Need some advice on maximizing your iPhone's battery? Here's an article where we dive into how to improve the iPhone’s battery life