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Samsung Galaxy M31 Hands-on: Incremental Improvements on a Great Budget Smartphone

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Samsung has had great success with its online-exclusive Galaxy M series in India. The Galaxy M30 that launched all the way back in February had a fantastic run and gave tough competition to the likes of the Redmi Note 7 Pro and Asus ZenFone Max Pro M2 in the budget segment. Six months later, the company followed up with the Galaxy M30s that brought even more improvements. Now, Samsung is refreshing the lineup once again with a new device called the Galaxy M31.

Launched late last month in India, the Galaxy M31 is an iterative upgrade with exactly the same internals as the Galaxy M30s — it’s an even smaller upgrade than the M30 to M30s. Those who recently bought the Galaxy M30s might not be pleased with the timing, but they are not missing out on anything major here. In particular, the Galaxy M31 brings four key changes to the table, namely, new primary and front cameras, a dedicated lens for Macro photography, and extra RAM to the base variant. These upgrades allow the Galaxy M series to close the gap with the competitors and also buy Samsung some time to work on a true successor that will likely arrive later this year. 

I have used the device since last week and here is my quick hands-on first impressions of the Samsung Galaxy M31. 

Note: The Samsung Galaxy M31 review unit was loaned to us by Samsung India. 

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Samsung Galaxy M31: Specifications

Specification Samsung Galaxy M31
Dimensions and Weight 159.2 x 75.1 x 8.9mm; 191g
Display & Design
  • 6.4″ FHD+ (2280 x 1080) IPS LCD, 19:9
  • Waterdrop notch
  • Corning Gorilla Glass 3 (front)
SoC Exynos 9611:

  • 4x Performance cores @ 2.3GHz +
  • 4x Efficiency cores @ 1.8GHz

Mali-G72 MP3 GPU

RAM and Storage
  • 6GB+64GB
  • 6GB+128GB
  • UFS 2.1

Expandable through dedicated microSD card slot

Battery & Charging
  • 6,000mAh
  • USB Type C
  • USB 2.0
  • 15W fast charger (included inside the box)
Software  Android 10 with One UI Core 2.0
Camera
  • 64MP, f/1.8, primary camera; 0.8µm
  • 8MP f/2.2, 117-degree ultra-wide-angle; 1.12µm
  • 5MP f/2.4, 1.12µm depth sensor
  • 5MP Macro, f/2.2
  • 32MP f/2.0 front camera; 0.8µm
  • [email protected] (primary camera)
  • [email protected] HD Sl0w-mo (Primary camera)
Audio
  • Mono speaker
  • Dolby Atmos
  • FM Radio
Connectivity
  • Bluetooth 5.0
  • 3.5mm audio jack
  • Wi-Fi 802.11, 2.4GHz + 5GHz
  • GPS, A-GPS, GLONASS, Galileo
  • 4G FDD LTE band: 1/2/3/4/5/7/8/12/13/17/20/26/28/66;
    TDD LTE band: 38/40/41

In terms of design, the Galaxy M31 is pretty basic. To retain affordability, Samsung had to cut corners and that’s pretty self-evident from an all-plastic build. Unlike Redmi and Realme phones, the Galaxy M31 doesn’t give you a premium feel when you’re holding it. That doesn’t mean to say the device feels flimsy or cheap. It’s still a good-looking device, but just know you’re getting exactly what you are paying for – there’s no surprise factor that we have come to expect from the budget phones in recent years. 

Samsung Galaxy M31

On the positive side, the plastic build allowed Samsung to pack a gigantic battery without making the device feel bulky. It’s surprising how lightweight it feels in hand despite that 6,000 mAh battery inside. Moreover, the plastic should also keep the durability concerns at bay. The back has a glossy finish — translation: it’s a fingerprint magnet. And Samsung hasn’t made the situation any better by not offering a case inside the box. Considering that pretty much every OEM throws in a TPU case with their phones nowadays, this is a little disappointing. The back picks up smudges and fingerprint grease in a matter of seconds so investing in a case is a must. 

Samsung Galaxy M31 vs Galaxy M30sSamsung Galaxy M31 vs Galaxy M30s

Galaxy M30s on the bottom – Galaxy M31 on the top

The power button and volume keys are on the right while the other side holds the SIM tray. The volume keys are placed a bit too high and despite my large hands, I found them a little uncomfortable to reach. But they do provide a nice clicking sound and don’t feel finicky despite being plastic. The bottom houses the headphone jack, the speaker grill, USB C port, and the microphone. 

On the back, we notice the new 64MP primary and macro sensors sitting alongside the wide-angle sensor, depth sensor, and an LED flash inside a rectangular camera module. The addition of the Macro camera serves here as the only visual distinction between the M31 and the M30s. And even then it’s easy to mistake them for twins if you’re not paying close attention. 

Samsung Galaxy M31Samsung Galaxy M31

On the front, we find the 6.4-inch Super AMOLED panel with a FHD+ resolution and waterdrop notch. Being an AMOLED panel, the colors and contrast are far superior to the average LCD. However, the viewing angles are not as good and one can observe the loss in saturation when viewing the display from off-axis. The display offers 420nits of peak brightness and it’s capable of getting extra bright in the adaptive mode for better sunlight legibility. Comparing the Moto G8 Pro’s LCD panel side by side, we observed the Galaxy M31’s panel to be brighter and easier to read outdoors despite the former rated for having higher peaked brightness on paper. 

Samsung Galaxy M31Samsung Galaxy M31

The display offers eye-pleasing colors in the default “Vivid” mode but you can also opt for the “Natural” mode which targets sRGB color space. Further, you can adjust the color temperature to your liking and set it to cool, warm, or neutral. You also get the system-wide dark mode and blue light filter which makes it easier to use the phone at night.

Samsung Galaxy M31Samsung Galaxy M31

The Galaxy M31 is powered by Samsung’s in-house Exynos 9611 SoC, employing 4x ARM Cortex-A73 cores (2.31GHz) and 4x ARM Cortex-A53 cores (1.74GHz) in an octa-core setup. The same SoC can also be found inside the Galaxy M30s, Galaxy A50, and Galaxy A51.  But one big change here is that, unlike the Galaxy M30s, Samsung is now pairing the chipset with 6GB of RAM on the base variant, bringing it on par with the competing phones. Our review unit is the top variant with 6GB RAM and 128GB of storage. 

Although the device is reasonably fast in day-to-day use, we observed noticeable stutters and glitches from time to time when switching between apps and opening the multitasking window. The app opening animations are also a tad slower but this can easily be fixed by scaling up the animation speed to 0.5x from the developer settings. For the most part, the performance was quite usable but we do hope Samsung iron out the above-mentioned fluidity issues in a future update. 

The bottom line here is that the Galaxy M31 isn’t a gaming phone. If it were to compete against the Snapdragon 730G on the Poco X2 or MediaTek Helio G90T on the Redmi Note 8 Pro, it won’t hold a candle. But we have to understand that’s not the audience Samsung is targeting. If your usage mostly comprises of using social media apps, taking photos, browsing the internet, and casual gaming, the Galaxy M31 will probably won’t disappoint you. Just don’t expect it to run hours-long gaming sessions on max graphics. 

The camera department is where we see the biggest upgrade. The primary 48MP sensor has been swapped for a 64MP one and there’s now a dedicated 2MP lens for Macro photography, bringing the total number of cameras to four. Just like the 48MP sensor, the new 64MP camera also uses a Quad Bayer a sensor, combining 6 pixels into 1 to produce a final 16MP shot. In theory, this should mean the photos will retain more details, show better dynamic range and capture more light in low-light compared to the 48MP sensor. 

The camera UI is well thought out and easy to navigate. You can swipe between the camera, Live Focus and Video mode from the main screen while other camera modes such as the Night mode, Pro mode, Food mode, etc are grouped together under More section. You can even drag any of these modes from the More section to the bottom tray for easier access. 

In daylight, the Galaxy M31 produces crisp photos with plenty of details. The dynamic range is also good and in high contrast scenes, the improvements of the new sensor are quite visible. Take for example the shots below and notice how the Galaxy M31 has managed to preserve the blue sky while it’s totally overblown in the Galaxy M30s. 

At night-time, the performance does take a slight hit but as long as you are surrounded by the strong artificial lighting the photos do come out well with sufficient details. 

The 8MP wide-angle lens is also capable of capturing great shots under good light conditions but it fails to impress in low-light, producing soft images with very little detail, reduced dynamic range and dull colors. 

In line with the competition, the Galaxy M31 also has a 5MP macro lens for super close up shots. It’s a fixed focus sensor so keeping the subject under perfect focus is a struggle as you can’t control exactly where the camera should focus by tapping on the screen and this often leads to out of focus shots. But when everything aligns, you can capture some really amazing shots of the tiny matters. 

On the front, we now get a 32MP sensor that produces well-detailed selfies with accurate skin tone rendering. Compared to the Galaxy M30s 16MP selfie shooter, the Galaxy M31 photos preserve far more details and have much better contrast and dynamic range as you can see in the shots below. 

The Galaxy M31 runs Android 10 with One UI Core 2.0 on top. The One UI Core is a stripped-down version of the full One UI experience that Samsung ships on its premium mid-range and flagship phones. As such it lacks features like the built-in screen recorder, Samsung Pay, Secure Folder and some other small bits. But rest assured that you’ll not be missing anything major. All important features are still there including the standard Android 10 features such as system-wide dark mode, new navigation gestures, improved Digital Wellbeing tools with Parental controls as well as the One UI 2.0 specific improvements like the new One-Handed mode, redesigned camera app and much more. 

Just like MIUI and ColorOS, One UI also comes with its fair share of bloatware, ranging from Microsoft Office suite to the usual likes of Amazon, Facebook, Snapchat and a bunch of regional apps. If you aren’t careful and don’t specifically opt-out of Samsung’s recommendations at the time of first setting up the device, hastily keep on tapping Next and Continue when setting up the phone, you’ll end with even more apps and services. 

But for the most part, the One UI is a pleasure to use and offers a perfect balance between customizability and ease of use. For a more detailed treatment of One UI 2.0 and the overall software experience check out our Galaxy S10 Lite review

Powering all things up is the showstopper 6,000 mAh battery, still the largest in the segment. The charger that comes inside the box is only 15W but with the battery this massive that’s a trade-off I will accept any day over a smaller size battery. In terms of charging speed, it takes the device well over 2 and a half hours to fully charge. 

The mono speaker at the bottom is plenty loud and doesn’t show much distortion at peak volumes. For improved sound quality, the device also offers Dolby Atmos enhancements when you’re listening to music over Bluetooth or wired headsets. The rear-mounted fingerprint scanner unlocks the phone in a jiffy while the face unlocks is also reliably quick and works even under really dark lighting albeit a little slower than usual. 

Concluding Note

The Galaxy M31 can be best described as a Pro variant of the Galaxy M30s. There aren’t many major improvements if at all. However, it’s only when we view the Galaxy M31 in contrast to the M30s do we feel disappointed. On its own, the Galaxy M31 makes the perfect case for an ideal budget smartphone for anyone who’s not a serious gamer. Not only is the Galaxy M31 one of the only few devices offering an AMOLED panel at this price, but it’s also the only one offering the largest battery in the segment. 

Speaking of the competition, the Galaxy M31 will go head to head against the recently released Realme 6, which provides far better design, a 90Hz display, and a similar camera package. The Redmi Note 8 Pro is another great option if you can look past the comparatively smaller battery and LCD panel as it has the same SoC and rear camera setup as the Realme 6. 

The Galaxy M31 may not provide the absolute bang for your buck but it still manages to hold its own. If you can look past the plastic build and average performance, the Galaxy M31 has plenty to offer, ranging from exceptional battery life and immersive display to the decent cameras and rich software experience.

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Nothing Ear And Nothing Ear (a) Earbuds Are 1st With ChatGPT Integration – Forbes

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London-based Nothing Tech has just launched new earbuds, two pairs, in fact. The Nothing Ear and more affordable Nothing Ear (a) have just gone on sale—you can read Forbes contributor Mark Sparrow’s review of both pairs here. And now, the company has announced a cool new feature: and industry-first integration with ChatGPT. It comes with strings, though.

The new earbuds have just been announced and are available to pre-order from nothing.tech now and go on sale from Monday, April 22. If you’re in London, and you want to be among the very first to get the earbuds, you can snap them up in the Nothing Store Soho a little bit sooner, from Saturday, April 20 (click-and-collect is available).

From launch, the company said, “it will enhance its overall user experience with industry-first ChatGPT integrations in its audio and smartphone products.”

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Nothing goes on that it wants “to advance consumer tech products’ transition to AI, as well as simplify and enhance the user experience.”

It means users will be able to pinch the earbud to directly speak to ChatGPT to ask questions and hear responses in the earbuds. Nothing is also introducing new elements to Nothing phones, such as widgets which make it easy to talk to ChatGPT on the handsets. Other features include being able to send screenshots directly to ChatGPT and a clipboard shortcut for sending text.

So, what are the catches?

Although the Bluetooth new earbuds will work with any iPhone or Android phone, and there are dedicated Nothing apps for each platform, the ChatGPT integration is more limited for now.

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The earbuds must be paired with a Nothing handset. From today, the feature works with the premium model, the Nothing Phone (2), providing it’s running the latest software. The earlier Nothing Phone (1) and more recent, more affordable model, Nothing Phone (2a) will need to wait for a software update, which Nothing says is “coming soon”.

Also coming in the future is compatibility with earlier Nothing earbuds, that is the Ear (1), Ear (2) and Ear (Stick).

The new earbuds are very keenly priced. Ear costs $149 (£129 in the U.K.), while Ear (a) is $99 (£99 in the U.K.). Both pairs have active noise-cancelling, which is not commonplace at this price point. The more expensive Ear has a wireless charging case and a feature to create a personal sound profile. Both pairs come in black and white finishes, with Nothing’s trademark transparent design in the earbuds and charging case. But the Nothing Ear (a) has an eye-catching extra: a tremendous yellow-finish option.

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U of T Engineering PhD student is working to improve the sustainable treatment of Ontario's drinking water – U of T Engineering News – U of T Engineering News

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Growing up in a small neighbourhood in Cameroon, Maeva Che (CivMin PhD student) was aware of challenges of accessing clean drinking water. 

“Experiencing that exposure to water issues and challenges with sustainable access to safe drinking water ignited my interest in water treatment,” Che says.  

Che’s drive to improve water quality around the globe brought her to the Drinking Water Research Group (DWRG) at University of Toronto’s Faculty of Applied Science & Engineering, where she is researching innovative solutions to address local water issues.  

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Che is working under the supervision of Professor Ron Hofmann (CivMin), who is a member of the DWRG. Her research focuses on removing unpleasant taste and odour compounds in Ontario’s drinking water by promoting the biodegradation of these compounds through granular activated carbon (GAC) filtration. 

The project is supported by a five-year Natural Sciences and Engineering Research Council of Canada (NSERC) Alliance grant called Advanced and Emerging Issues in Drinking Water Treatment. 

GAC filtration is a water treatment process that uses granular activated carbon, which is made from organic materials that are high in carbon, such as wood, coal or coconut shells. These materials are heated in the absence of oxygen through a process known as pyrolysis and prompted chemically or physically to produce the activated carbon. The activation enhances the material’s adsorption properties, making it productive to remove contaminants from water.  

While GAC filtration is an effective treatment process, its adsorptive capacity is limited. The adsorptive capacity of GAC is expected to become exhausted after about three years in service and drinking water treatment utilities must replace the GAC. Aside from the inconvenience, replacing GAC is costly.  

Che is working on alternative ways to remove contaminants using GAC filtration, specifically through biodegradation. When the filtration has been in service for a while, there is the growth of micro-organisms on the GAC, which can be useful for removing contaminants.   

PhD student Maeva Che works with filtration systems research at the Drinking Water Lab in the Department of Civil & Mineral Engineering. (photo by Galina Nikitina)

“Think of biodegradation as the useful bacteria on the GAC feeding on the contaminants in the water, thereby removing them,” says Che. 

“If the GAC has enough good bacteria that is biodegrading the compounds, the GAC may not need to be replaced when its adsorptive capacity becomes exhausted. This can extend the filter’s lifetime, resulting in cost benefits for treatment utilities.” 

In other words, biodegradation can potentially enhance the performance of GAC filters. 

Che and the DWRG will collaborate with water treatment plants to determine methods that can enhance the biodegradation of taste and odour compounds within their GAC filters.  

Currently in its initial phase, the project is taking place alongside the Peterborough Utilities Group’s drinking water treatment plant, where Che is conducting pilot-scale filtration studies with support from the Peterborough Utilities Commission. They plan to extend this research to other partner treatment plants in the future. 

Working with various water treatment plants across Ontario, Che will also assess the effectiveness of GAC filters in removing non-traditional taste and odour compounds, which are not commonly monitored. 

To achieve this, she’ll evaluate filter performance for two common taste and odour compounds — 2-methylisoborneal and geosmin — and eight additional non-traditional compounds that can cause taste and odour events. This involves collecting GAC and water samples from the plants and conducting lab-scale filtration tests, called minicolumn tests. This test, developed by the DWRG, allows to differentiate between adsorption and biodegradation in GAC filters. 

Minicolumn tests provide crucial insights into the performance of the GAC filters in terms of the adsorption and biodegradation of contaminants. To distinguish between these mechanisms, researchers use parallel minicolumns. One minicolumn operates under conditions where the biological activity of micro-organisms is suppressed, which isolates the adsorption process. The second minicolumn operates without biological suppression, allowing both adsorption and biodegradation to occur. 

“Many plants are unaware of their filters’ performance for other compounds, aside from the two common ones, that also contribute to taste and odour events in water. Our project, therefore, plays a crucial role in expanding the understanding of this,” Che says. 

Project partners include the Ajax Water Supply Plant and the Barrie Surface Water Treatment Plant.  

The DWRG is made of approximately 30 graduate students, post-doctoral fellows, research managers and associates who collaborate with local, national and international industry and government organizations to address a wide range of projects related to municipal drinking water. 

Che credits her experience as a master’s student with the research group as a major factor in her decision to pursue a PhD at the University of Toronto.  

“During my master’s degree with the DWRG, I worked on projects that improved drinking water quality, gaining hands-on experience at treatment plants. Seeing the results of my research reinforced my decision to pursue my PhD here,” Che says. 

Ultimately, Che hopes to make a significant impact in the field — and the DWRG provides opportunities to achieve this, with a supportive community of researchers and supervisors.  

“My goal is to continue researching and developing sustainable solutions for drinking water treatment that benefit communities in need,” she says. 

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Huawei's latest flagship smartphone contains no world-shaking silicon surprises – The Register

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When Huawei debuted its Mate 60 smartphone in mid-2023, it turned heads around the world after teardown artists found it contained a system-on-chip manufactured by Chinese chipmaker Semiconductor Manufacturing International Corporation (SMIC) using a 7nm process.

SMIC was thought not to be able to build that sort of thing. So while the Mate 60 didn’t differ markedly from every other modern smartphone, its very existence called into question the effectiveness of US-led efforts to prevent advanced chipmaking tech reach the Middle Kingdom.

Much speculation has therefore concerned what Huawei would deliver next, and this week the world got its answer – in the form of the Pura 70.

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Chinese media report that early users of the device have posted details of its innards, naming the SoC as Kirin 9010 with four efficient cores running at 1.55GHz, half a dozen performance cores at 2.18GHz, and a couple of high-performance cores zipping along at 2.30GHz. All cores are Arm v8. A third-party spec sheet suggests it’s a 7nm chip – meaning Chinese chipmakers appear not to have made another unexpected advance.

Early tests suggest it outperforms the Kirin 9000 found in the Mate 60, but independent assessments are yet to emerge. The crowdsourced evaluations currently available are sometimes dubious.

What we can say with confidence is that the Pura 70 has a 6.6-inch OLED display with 120Hz refresh rate and resolution of 2,760 x 1,256. It has 12GB RAM aboard, and buyers can choose from 256GB, 512GB, or 1TB of storage.

The three rear-facing cameras on the base models can capture 50, 12, and 13 megapixels apiece.

The Pura range derives from Huawei’s P-Series handsets that stretched from the midrange to the low-end of premium, but are now focussed – pardon the pun – on photography enthusiasts. The device comes on four variants, each priced to match the four editions of Apple’s iPhone 15.

The screen on the high-end “Ultra” model grows to 6.8 inches and 2,844 × 1,260 pixels, with two rear cameras that shoot at 50 megapixels and one at 40. One of the 50MP snappers is retractable, to enhance its zooming powers.

Importantly, all models of the Pura 70 run HarmonyOS 4.2 – Huawei’s not-Android operating system.

China is all-in on HarmonyOS as the nation pursues indigenous alternatives to Western tech. In recent weeks Chinese media and government agencies have noted the growing proliferation of native HarmonyOS apps, trumpeting that developer enthusiasm for the platform means local buyers now have a more patriotic alternative.

That alternative appears to be welcome: after the debut of the Mate 60, analyst firm IDC saw Huawei’s smartphone market share improve by 36.2 percent. ®

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