Every autumn, Apple introduces new iPhones. And every autumn, many iPhone users wonder, “Should I upgrade?”.

This year was, in Apple speak, an “S year,” which means that one of the new iPhones, the iPhone XS, was an upgrade rather than a total overhaul.

Which begs the question, if you have an iPhone X – which is only a year old – do you need to upgrade to the XS?

Or, if you are looking for a new device, should you go for the cheaper option and buy last year’s phone over the new XS?

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The differences between the two phones are minor, but there are still a few things that set the new phone apart.

Here is how the iPhone X compares to the iPhone XS.

1. The iPhone XS comes in more colours

The iPhone X came in just two colours: silver/white and space grey/black.

The iPhone XS retains those two shades, but adds a third colour option: gold.

2 . The iPhone XS has a brand-new, super-fast chip

The iPhone XS has Apple’s new A12 Bionic chip, which the company says includes a “next-generation neural engine”.

Regardless, it should improve the phone’s speed and performance compared with the iPhone X.

That being said, the iPhone X is still a high-performance phone, despite having a year-old chip.

 3. The iPhone XS is more water-resistant

The iPhone XS is water-resistant to a depth of 6.5 feet for up to 30 minutes – that is double the iPhone X.

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4. The iPhone XS comes with more starting storage than the iPhone X

The iPhone XS comes in three storage options: 64GB, 256GB, and 512GB.

The iPhone X, on the other hand, only comes in two options: 64GB and 256GB.

5. The iPhone XS is just a tiny bit heavier than the iPhone X

The iPhone X and the iPhone XS have the exact same dimensions.

But the iPhone XS is just slightly heavier than the iPhone X – the iPhone X weighs 174 grams, while the iPhone XS weighs 177 grams.

 6. The iPhone XS has a slightly more advanced camera

Both the iPhone X and the iPhone XS have impressive cameras, but the iPhone XS has a few upgrades that make it more advanced than last year’s model.

The new phone comes standard with a more advanced portrait mode, which features the ability to control the amount of background blur, or bokeh, in an image.

Bokeh should be better looking on the new device as well.

Portrait mode selfies have been improved on the iPhone XS.

Low-light images should look better.

Action shots on the iPhone XS should be better than they were on past phones thanks to faster sensors, Smart HDR, and zero shutter lag.

The iPhone XS also has a feature called Smart HDR to enhance high-dynamic-range imaging, which automatically blends together the best parts of separate exposures into one photo.

When it comes to video, Apple has added stereo recording, and extended dynamic range for video up to 30 frames per second.

7. The iPhone XS gets better battery life than the iPhone X

Apple has not specifically said how much battery life you will get from the iPhone XS, only that it is 30 minutes longer than the iPhone X.

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By contrast, Apple says the iPhone X lasts two hours longer than the iPhone 7.

Regardless, you should get great battery life with either device.

8. Otherwise, the phones are identical

The iPhone X and the iPhone XS share a lot of identical qualities: wireless charging, a beautiful OLED display, Face ID, a premium look and feel, and the ability to download the latest iPhone software, iOS 12.

They even had the same starting price: US$999.

Apple discontinued the iPhone X when it introduced the iPhone XS, which means you cannot buy a new iPhone X through Apple any more.

However, you can still find the iPhone X at carrier stores for US$100 less, although your mileage may vary as the older phone gets phased out.

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This article originally appeared on  Business Insider .