The Samsung Galaxy S9 has finally been launched, with sights set firmly on Apple's ultra-high-end iPhone X.
Apple touts its flagship handset as the "future of smartphones", but both sport 10nm CPUs - the Apple, the company's own A11 Bionic system on a chip, while the Samsung Galaxy S9 is powered by Samsung's home-grown Exynos 64-bit octa-core CPU running at up to 2.7GHz.
So how do the two flagships compare? We've put them both head-to-head in order to find out.
iPhone X: 143.6x70.9x7.7mm, 179g
Galaxy S9: 147.7x68.7x8.5 mm, 163g
While the Samsung Galaxy S9 doesn't look too different from the S8, it is a touch thicker and heavier than its predecessor. Compared to the iPhone X, though, it remains lighter, long and thinner.
Both phones feature a premium all-glass design surrounded by a metal frame, and both are dominated by their respective bezel-less displays.
Irritating some people, of course, is the small 'notch' at the top of the iPhone X display, where you'll find the front-facing camera and sensors. Samsung has mercifully avoided this design flourish.
The iPhone X was heavier than the Galaxy S8 at 179g compared to 155g, and that remains the case even though the S9 has put on some weight - it's now 163g.
All-in-all, though, there isn't much between the two in terms of dimensions - certainly, nothing deal-breaking if you're considering parting with your hard-earned for the best smartphone money can buy.
Both the iPhone X and Galaxy S9 should be pretty rugged too, with Apple claiming the iPhone X is water and dust-resistant to a 'microscopic' level, and Samsung's claiming that its flagship is IP68 water and dust-resistant, just like its predecessor.
iPhone X: 5.8in Super Retina (2436x1125, 458ppi) OLED edge-to-edge display
Galaxy S9/S9+: 5.8 inch/6.2in QHD+ Super AMOLED curved display (570ppi/531ppi)
The Galaxy S9 and S9+ will offer a choice between a 5.8in or 6.2in QHD+ Super AMOLED curved display with 570ppi or 529ppi, respectively. If it's anything like the S8, Samsung's screen will likely best the iPhone X, at least in terms of raw specs.
Although not curved like that rumoured to be on the S9, the iPhone X's 5.8in OLED panel stretched to fill the front of the phone, albeit for its odd-looking 'notch'. What's more, the 'Super Retina' display on the iPhone X, at 2436x1125 and 458ppi, is the highest-resolution screen to feature on an iPhone yet, and the first to make use of OLED and Apple's True Tone tech, which adjusts the white balance to suit your environment.
Hardware and storage
iPhone X: A11 Bionic CPU, 3GB RAM, 64GB or 256GB storage
Galaxy S9/S9+: Exynos 9810 Octa - EMEA; Qualcomm MSM8998 Snapdragon 845 - USA & China. 4GB/6GB RAM, 64GB/128GB storage (base models), with microSD offering up to 256GB extra
The iPhone X, along with the iPhone 8 and 8 Plus, is the first to debut Apple's new A11 Bionic CPU, which comes paired with an Apple-built GPU. This six-core CPU is divided into two low-performance cores and four high-performance cores, with the regular cores being 25 per cent faster than the previous A10 chip, and the high-performance cores being up to 75 per cent faster than the A10 SoC.
Across EMEA, the Galaxy S9 will ship with Samsung's home-grown Exynos 9810 processor, an eight-core CPU featuring four performance processor cores, now reaching speeds up to 2.9GHz, and four efficiency cores for extending battery life when less power is required.
Built using Samsung's second-generation 10nm process technology, the Exynos 9810 promises to be more energy-efficient, with Samsung claiming a doubling of single-core performance and a 40-percent improvement in multi-core scenarios. So expect much better battery life from the S9, and for it to soundly beat Apple in that respect.
Elsewhere, the iPhone X packs 3GB RAM, compared to the S9's 4GB and the S9+'s 6GB. There'll also be a choice of 64GB or 256GB of expensively built-in storage. Although it was rumoured that the Galaxy S9 would only offer 128GB on board, Samsung has played it safe by offering customers a choice of 64GB, 128GB or 256GB, and the ability to expand that by a further 256GB via its onboard microSD slot.
iPhone X: iOS 11
Galaxy S9: Android 8.0 Oreo
It's always difficult pitting iOS against Android, because almost everyone knows which operating system they'd rather use.
The iPhone X, naturally, ships running iOS 11. This brings with it some features that will only be available on the pricey flagship, including Face ID, animated emoji (or 'Animoji'), new gestures for navigating home and mult-tasking, and portrait lighting and selfie modes.
The Galaxy S9 is expected to run Android 8.0 Oreo and, as usual, Samsung's skin, which is getting better with every iteration of a flagship phone, and will equip the device with a handful of custom features (aka bloatware), including Galaxy Apps, Samsung's own Gallery app and a tool for pairing your Samsung-branded wearable.
iPhone X: Dual 12MP (f/1.8 and f/2.4) with OIS, 7MP front-facing
Galaxy S9: 12MP with OIS, (F1.7), autofocus; 8MP front-facing
The iPhone X sports a dual camera setup similar to that which debuted on the iPhone 7 Plus. However, the two 12MP sensors have been upgraded, and can now shoot 4K video at up to 60fps and 1080p slo-mo video at 240fps.
The Galaxy S9 retains its single-lens 12MP Dual Pixel camera with OIS, while the Galaxy S9+ packs a dual 12MP set-up on its rear, comprising of wide angle and telephoto lenses.
The cameras on both the S9 and S9+, as expected, come with a dual aperture of f/1.5 and f/2.4. Samsung claims its flagship smartphones are the first to offer such a feature, and adds that it will deliver "the brightest lens of any smartphone camera on the market".
iPhone X: From £999
Galaxy S9: £739 (S9) and £869 (S9+)
While pre-release rumours had suggested that the Galaxy S9 would be £100 more expensive than last year's S8, Samsung has set the price just a bit lower - £739 is still a fair amount of money, but about £50 less than expected. Pricing of the S9+, meanwhile, has come in more or less as expected at £869. All prices SIM-free.
That's still quite a bit cheaper than the iPhone X, Apple's most expensive-ever smartphone, with prices starting at £999 for the 64GB model. This eye-watering opening price-point, if reports are to be believed, has led to a sharp dip in iPhone X sales following the usual early rush for a new Apple product.
There are a lot of similarities between the iPhone X and the Galaxy S9. Both sport high-end glass and metal designs, bezel-less displays and much more power with their hexa-core and octa-core processors, respectively.
There's also a lot of differences, too. The iPhone X comes out on top with its dual camera setup, and the Galaxy S9 trumps the iPhone X with its expandable storage option.
We'll wait until we pit the smartphones head to head in the flesh in a full-on head-to-head review before we decide which one is better - our hands-on review of the Samsung Galaxy S9 will be going live on Monday morning.
And, after launching the Galaxy S9 on the first day of MWC, buyers will be getting their own hands on the devices from 9 March - if they pre-order before Wednesday 7 March, that is. That doesn't leave too much time to save up.
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