Samsung Galaxy S9 (left) and the S9+ (right)
|Slogan||The Camera. Reimagined.|
|First released||16 March 2018|
|Availability by region|
|Predecessor||Samsung Galaxy S8/S8+|
|Successor||Samsung Galaxy S10 line|
|Related||Samsung Galaxy Note 9|
|Type||Smartphone (S9) |
147.7 mm × 68.7 mm × 8.5 mm (5.81 in × 2.70 in × 0.33 in)
158.1 mm × 73.8 mm × 8.5 mm (6.22 in × 2.91 in × 0.33 in)
|Operating system||Original: Samsung Experience 9.0 on top of Android 8.0 "Oreo" upgradeable to One UI 1.0 on top of Android 9.0 "Pie"|
|System on chip|
|Memory||S9: GB 4 LPDDR4X RAM|
S9+: GB LPDDR4X RAM 6
|Storage||64, 128 or 256 GBUFS 2.1|
|Removable storage||microSD, expandable up to 512 GB|
|Rear camera||S9: MP ( 12 μm, 1.4 f/1.5/2.4), OIS, 4K at 30 or 60 fps (limited to 5 min), QHD at 30 fps, 1080p at 30 or 60 fps, 720p at 30 and super slow motion at 960 fps (for 0.2 seconds).|
S9+: Dual MP ( 12 μm, 1.4 f/1.5/2.4) + 12 MP ((μm), 1.0 f/2.4), Dual OIS, 4K at 30 or 60 fps (limited to 5 min), QHD at 30 fps, 1080p at 30 or 60 fps, 720p at 30 fps and super slow motion at 960 fps (for 0.2 seconds).
|Front camera||MP ( 8 μm, f/1.7), autofocus 1.22|
|Sound||Stereo speakers tuned by AKG, Dolby Atmos surround sound|
|Connectivity||Wi-Fi 802.11 a/b/g/n/ac (2.4/5GHz), VHT80, MU-MIMO, 1024-QAM 2G, 3G, LTE, LTE-A|
The Samsung Galaxy S9 and Samsung Galaxy S9+ (shortened to S9 and S9+, respectively) are Android smartphones produced by Samsung Electronics as part of the Samsung Galaxy S series. The devices were revealed at the Mobile World Congress in Barcelona on 25 February 2018, as the successors to the Samsung Galaxy S8 and S8+.
The Galaxy S9 and S9+ have nearly identical features to the S8 batch, with the same display size and aspect ratio, just like their predecessor. One highly regarded change to distinguish between the models is the location of the fingerprint sensor. While the S8's is found beside the camera, the S9's is directly underneath it. Most notably, however, the S9 line is equipped with several camera improvements over the S8.
The phone has received generally favorable reviews, with critics mostly noting the enhanced camera and better positioned fingerprint scanner. Critics, however, still criticize the lack of improvement to other features compared to its predecessor.
On the front, the Galaxy S9 and S9+ look identical to the S8 and S8+. They both feature 1440p Super AMOLED displays, with an 18.5:9 aspect ratio. The S9 has a 5.8-inch panel, while the S9+ uses a larger 6.2-inch panel.
In most countries, the S9 and S9+ both come with a Samsung Exynos 9810 SoC. Versions sold in the United States, Canada, China, Hong Kong, Japan, and Latin America come with the Qualcomm Snapdragon 845 SoC instead.
The S9 comes with 4 GB of RAM; the S9+ comes with 6 GB of RAM. Both devices come with storage options of 64, 128 and 256 GB, and feature the ability to use a microSD card to expand the storage to a maximum of 400 GB.
The battery capacities are the same as their predecessors: 3000 mAh for the S9, and 3500 mAh for the S9+. Just like its predecessor, the S9 supports AirFuel Inductive (formerly PMA) and Wireless Power Consortium's Qi wireless charging standards.
The S9 and S9+ now have stereo speakers tuned by AKG and the phones also have Dolby Atmos surround sound support; furthermore, the S9 and S9+ are two of the few smartphones that still retain the 3.5mm headphone jack.
Where the S9 and S9+ have the most noticeable change from the S8 line is on the back of the phone. The fingerprint sensor has been moved from the right of the camera to a more centralized location just below the camera like on the Galaxy A8 and A8+ for convenience. A more secure unlocking method has been added, where face recognition and iris scanning have been merged into one and called Intelligent Scan.
The cameras on both phones received improvements. The S9+ has a dual-lens camera setup on the back, like on the Galaxy Note 8, while the S9 only has a single camera on the back. Both phones have a Dual Aperture rear camera which can switch between f/1.5 and f/2.4, depending on lighting conditions. The phones can shoot 4K at 60 frames per second (limited to 5 min), 1080p at 240 frames per second and 960 frames per second "Super Slo-Motion " video at 720p for 0.2 seconds. AR Emoji, similar to Apple's Animoji feature on the iPhone X, is a new feature that lets the user make emojis based on themselves. Third party app support is provided for this feature.
There are also several construction improvements compared to S8 and S8+ models, mostly to increase physical durability, such as thicker glass, thicker metal rim and different (less prone to deformation) metal alloy used for the frame.
The S9 and S9+ ship with Android 8.0 "Oreo" with the Samsung Experience user interface and software suite. It is mainly unchanged over the versions found on the S8 and Note 8, but adds additional features such as new customization options, live language translation in the camera app, and landscape orientation support for the Samsung home screen.
In January 2019, Samsung began to release Android 9.0 "Pie" for the S9. This update introduces a major revamp of Samsung's Android user experience known as One UI. A main design element of One UI is intentional repositioning of key user interface elements in stock apps to improve usability on large screens: many apps include large headers that push the beginning of content towards the center of the display, while navigation controls and other prompts are often displayed near the bottom of the display instead.
John McCann from Techradar complimented the improved camera and the new location of the fingerprint sensor, but criticized that it was too similar to its predecessor (Galaxy S8) and had limited AR Emoji functionality.
Computer World gave the phone a positive review and said it was "measurably better than its predecessor", but did note there wasn't a new feature that was particularly "exciting". PC Magazine also gave the Galaxy S9 and S9+ positive reviews.
Samuel Gibbs from The Guardian gave the S9+ 5/5 stars, with the headline it was "the best big-screen smartphone by miles". Screen and camera were praised, but the review noted battery life could be better. He also appreciated the inclusion of a headphone jack, despite many other phones not having one.
The larger S9+'s camera received a score of 99 from DxOMark, which, at the time was the highest score awarded by them to a mobile device camera. It was soon surpassed by the Huawei P20 and P20 Pro, which scored 102 and 109 respectively.
Dan Seifert of The Verge gave the S9 a score of 8.5, stating that its performance, camera and design were satisfactory. However, he was not amused by the average battery life and the addition of Bixby, also saying that Samsung has a poor history of updating their smartphones.
Samsung has described the sales of the Galaxy S9 as "slow" in their Q2 2018 earning report. Analysts predicted that the phone would be the worst selling Galaxy S flagship since the Samsung Galaxy S3. According to 더벨 - 국내 최고 자본시장(Capital Markets) 미디어 about 31 million of the Samsung Galaxy S9 were shipped from those 10 million units were sold worldwide. 
About a week after the release of the devices, users started experiencing an issue in the touchscreen, where it would fail to register input in any particular area of the screen, even after a factory reset. This was termed as "dead zones" by the users. Samsung has responded by issuing a statement that they were "looking into a limited number of reports of Galaxy S9/S9+ touchscreen responsiveness issues".
Some users of the Galaxy S9 have reported the so-called "Black Crush" issues, where the display has issues displaying different shades of dark colors. Samsung has responded with a statement that they are aware of "a limited number of reports of Galaxy S9/S9+ displaying dark colors differently than intended in certain instances" but has not provided an official fix for it yet.
Many users with the Exynos variant of the phone experienced subpar battery life. Analysts discovered that the four Samsung-designed cores had been poorly tuned, resulting in decreased battery life. This issue, however, has been addressed in part with the release of the August 2018 update.
In previous Galaxy S phones, the Exynos processor performed similar to the Snapdragon version. In the S9, the Exynos 9810 performed relatively slowly for a flagship and compared to the Snapdragon 845. This was not very evident in synthetic benchmarks, but more so in benchmarks that simulated real world performance, such as pcmark.
Samsung Galaxy S8
| Samsung Galaxy S9
Samsung Galaxy S10
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