Samsung Galaxy M51 Review: Great 7000mAh Battery

Samsung Galaxy M51 Review: I have been reviewing many accessories like headphones, speakers, and smartwatches recently. Kinda desire smartphones are becoming boring lately. Anyway, for the past few months, alongside my primary phone which is that the iPhone 12 Pro Max immediately, I even have been using the Samsung Galaxy M51 as my secondary device and I’ll be discussing it during this long-term review.

Samsung Galaxy M51 Specifications:

Body 6.45 x 3.00 x 0.37 inches, 213 gm
Display 6.7-inches Super AMOLED Plus, 393PPI, Gorilla Glass 3+
Resolution: FHD+ (2400 x 1080 pixels), 20:9 aspect ratio
Chipset: Qualcomm Snapdragon 730G (8nm Mobile Platform)
CPU Octa-core (2×2.2 GHz Kryo 470 Gold & 6×1.8 GHz Kryo 470 Silver)
GPU: Adreno 618
Storage 128GB internal storage (expandable via a dedicated microSD slot)
Software & UI: One UI 2.1 on top of Android 10
Rear Camera Quad-camera;

  • 64MP primary lens with f/1.8 aperture & PDAF
  • 12MP ultra-wide-angle lens with f/2.2 aperture, 123º FOV
  • 5MP depth sensor with f/2.4 aperture
  • 5MP macro sensor with f/2.4 aperture
  • LED flash
Front Camera: 32MP, f/2.0 lens (punch-hole)
Security: Physical fingerprint sensor (side-mounted)
Audio: 3.5mm headphone jack, loudspeaker, Dolby Atmos
Connectivity Dual-SIM (Nano), WiFi 802.11 a/b/g/n/ac, Bluetooth 5.0, GPS / AGPS / Glonass / Galileo / BDS, USB Type-C, 4G LTE
Sensors Accelerometer, Gyro, Proximity, Geomagnetic, RGB Light sensor
Battery 7000mAh with 25W fast charging (USB-C to USB-C)
Colour options: Celestial Black, Electric Blue
Price in Nepal: Rs. 39,999 (6/128GB) | Rs. 43,999 (8/128GB)
Price in India:
  • 6GB + 128GB = 24,999INR
  • 8GB + 128GB = 26,999INR

Samsung Galaxy M51 Review:

Samsung Galaxy M51 is quite a special taste of a phone than what Samsung usually offers in its mid-range segment. I even have always liked Samsung mid-rangers when it involves camera optimization, battery life, and its vivid AMOLED display. However, it had been always lacking within the performance department due to Samsung’s audacity to incorporate its in-house Exynos 9611 chipset altogether most all of its midrange M and A-series of phones last year.

With the Samsung Galaxy M51, not only has the corporate included a way better SoC, but they need also improved the software optimization, which I’ll definitely get into full detail in only a moment. Anyway, allow me to elaborate long-term experience with the Samsung Galaxy M51 during this review.

Design & Build

  • Glass front, plastic back, plastic frame
  • A bit hefty because of a big battery

Let’s start with planning. Well, needless to mention, Samsung hasn’t done anything drastic during this aspect and that we have seen this design choice repeatedly before. Actually, it just seems like a beefed-up version of the Galaxy M31. the rear remains plastic with a shiny finish and with the plastic side frames, it does raise some concern about prolonged durability. Thankfully, throughout my usage, the foremost that’s happened maybe a few scratches on the rear.

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And it’s surprising how this rear panel is so susceptible to scratches. I mean, I used the phone without a canopy for just 3 days initially and it had already suffered tiny visible scratches at the rear. So, employing a good case is very recommended from my side.

Samsung Galaxy M51, Samsung Galaxy M51 Battery, Samsung Galaxy M51 Review, Samsung Galaxy M51 Volume Power Button, Samsung Galaxy M51 Design

While the design of the phone definitely is pretty basic, I wanted Samsung Galaxy M51 brought the gradient design of its A-series on the higher-end M-series models too. Overall, visual flair isn’t one among M51’s forte and if you’re someone who wants to flaunt a good-looking smartphone, then you’re happier with offerings from OPPO or Vivo.


  • 6.7-inches FHD+ Super AMOLED Plus screen
  • 60Hz refresh rate, 86.7% screen-to-body ratio

That being said, Samsung has always had an honest reputation for providing great displays which tradition continues on the Samsung Galaxy M51. You get an enormous 6.7-inch Super AMOLED screen with a centred non-obtrusive punch-hole cutout. It’s a quite pleasing display to seem at also. So, throughout my usage for the long-term review of Samsung Galaxy M51, I’ve had an excellent time viewing different sorts of content on this display.

Samsung Galaxy M51, Samsung Galaxy M51 Battery, Samsung Galaxy M51 Review, Samsung Galaxy M51 Volume Power Button, Samsung Galaxy M51 Design, Samsung Galaxy M51 Display

However, even with its AMOLED heritage, you don’t get an in-display fingerprint sensor here. Maybe that’s a neighbourhood of the cost-cutting process! But I certainly am not complaining about it though because Samsung’s implementation of under-display fingerprint readers has never been the fastest. This side-mounted one, on the opposite hand, is fast and gets an accurate reading most of the time.

Initially, there have been instances where I might struggle to locate the sensor because it is placed a touch above I’m familiar with, but slowly I got won’t to it, and it’s all fine now! Back to the display, it’s fairly bright so I’ve had no problems reading or using social media while basking during this winter sun.

Standard 60Hz refresh rate

The one tiny complaint I even have, which I assume many of you are doing too, is that this screen refreshes at just 60Hz. Maybe, Samsung could have included a 90Hz panel, given its direct competition just like the OnePlus Nord has one. Yet, the worth of OnePlus Nord here in Nepal is quite $100 above that of the M51, so that’s an incomparable issue. But, in markets like India, both these phones are priced very similarly, thus giving the OnePlus Nord a foothold.

But, aside from the lower refresh rate, trust me there’s hardly anything to not like about this display. it’s the excellent contrast and therefore the touch sensitivity is top-notch too. and that I need to say that no other Android manufacturer does dark mode better than Samsung, so I quite like what we get on the display side of things.


  • 7000mAh battery with 25W fast charging

And to not forget the undisputed, amazing battery life you get on this phone. During everything of the review period, the 7,000 mAh battery within the Samsung Galaxy M51 gave me no but a 2-day endurance on my use meaning that I only had to charge it once in two days.

Samsung Galaxy M51 25W Charger

That was with my regular usage pattern wherein I might make and pick calls every now then, write some emails, watch a couple of videos, play a game or two alongside using being active on my social media throughout the day.

Yet, I’m not getting to lie, despite the terrific battery endurance, I do wish the charging speed could have used a touch bump though. Yes, 25-watt Power Delivery charging is pretty fast, but this huge brick of A battery takes 1 hour and 55 minutes to urge juiced up, so if you forget to charge it overnight, be prepared to attend for two hours within the morning.


  • Octa-core Qualcomm Snapdragon 730G SoC (8nm)
  • 6/8GB LPDDR4x RAM with 128GB storage (expandable)

Now let’s get to the performance. Like I discussed earlier, contrary to the Exynos 9611 in most Samsung mid-range phones, the Samsung Galaxy M51 features Snapdragon 730G, which is one of the favoured choices within the mid-range category.

With this, I can finally say that the performance of a mid-range Samsung phone is really good. Plus, the corporate has optimized its One UI here pretty much. As a result, you’ll get an honest user experience on this device. From normal tasks to even multitasking with heavy apps, things are quite fluid. The Samsung Galaxy M51 that shipped with an identical Snapdragon 730 chipset isn’t smooth because of the Samsung Galaxy M51, so it’s great to ascertain Samsung work on memory and CPU management to supply a far better experience.

Gaming experience

Gaming too may be a fun ride here. PUBG Mobile runs quite nice in Smooth graphics and Ultra fame rates all the while being ever slightly jittery in High frame rates and HD graphics setting. Still, the cheaper Redmi Note 9 Pro Max and therefore the Poco X3 has slightly better performance in PUBG under an equivalent HD graphics and high frame rates. But again, the difference may be a very thin line, so I assume it doesn’t matter such a lot I assume.

Samsung Galaxy M51 UI

Likewise, COD runs silky smooth even within the maximum of graphics and frame rate settings. and therefore the better part is that even when you’re game continuously for quite while the phone remains ready to maintain low temperatures and amazing battery endurance. as an example, one hour of continuous PUBG and COD gaming only took away 9% of its juice which is awesome!

Software & UI

In terms of software, the Samsung Galaxy M51 runs on One UI Core version 2.5 on top of Android 10 and is predicted to receive One UI 3.0 supported Android 11 in April of 2021. Disappointingly, I haven’t received the December security patch yet. this is often definitely one area where Samsung has got to work on more considering the recognition of its non-flagship phones. While it’s already unrolled One UI 3 and December security patch on the premium S and Note series of smartphones, Samsung’s mid-range phone owners still gotta wait a short time.


Apart from that, I’m not an enormous fan of the only firing speaker here too. Its output, in my opinion, is strictly average in terms of loudness and overall quality. It doesn’t distort when maxing out the volumes, but it does lack depth. Why am I complaining about this is often because, it’s such an excellent display and battery life, so, if it had been paired with better speakers, it might are an excellent multimedia device too.


  • Quad-cameras at the back
  • (64MP primary, 12MP ultra-wide, 5MP depth, 5MP macro)
  • 32MP selfie camera inside the punch-hole cutout

Samsung Galaxy M51 Rear Cameras

Okay, enough of the complaints now. Let’s get to at least one of the simplest things about this phone, which is that the cameras. Samsung Galaxy M51 features a total of 5 cameras, four at the rear and one at the front. the rear houses the 64MP primary, 12MP ultra-wide, 5MP depth, and macro sensors while there’s a 32MP snapper on the front.

Samsung Galaxy M51 Front Cameras

Normal Images

The primary images, a bit like how it’s with all Samsung phones, has that punchy undertone that grabs attention initially sight.

Plus, its HDR function works quite fine so you won’t get dark images whatsoever because it handles shadows and lightweight pretty much. Furthermore, the small print is on point too, so I’m quite happy about how the pictures end up.

Wideangle Images

Likewise, the ultra-wide shots too have great colours and dynamic range. in comparison to the Vivo V20, you’ll notice that Samsung’s ultra-wide shots are wider. But in terms of colours, dynamic range, and details, both look neck-and-neck.

And not just with the ultra-wide shots, primary images from the V20 compete with the M51 rather well.

The difference lies within the colour tone where the V20 is more yellowish while the M51 features a reddish tint. But aside from that, I even have not been ready to firmly decide which one’s better.

Portrait Images

Even portraits look equally good from both phones.

It’s just that Samsung manages to bring out a rather better bokeh effect than Vivo. Otherwise, subjects and background look good on both.

Selfie Images

Also, I’ve not been ready to choose a transparent winner in terms of selfies. Both devices manage to shine in their own ways.

V20 features a slightly yellowish tone while Samsung’s selfies look a-bit pinkish. Besides this, the small print and colours are once more, neck-and-neck.

It all boils right down to personal preference to work out the subjective winner among these phone’s selfie camera.

Nighttime Images

Moving on, the nighttime shots have similar attributes a bit like the daytime ones too.

Only the colour reproduction side of things look slightly different, but other things are almost an equivalent.

Having said that, Samsung crops the night mode images comparatively more.


Getting to the videos, it’s quite weird how both these phones cannot shoot 60fps videos at any resolution. Here, the 30fps footages under both 1080p and 4k resolutions are well stabilized, because of Gyro EIS. But what I can say is that Vivo V20 does a far better job at maintaining the exposure compared to the Samsung Galaxy M51

Overall, the Samsung Galaxy M51 may be a reliable midrange camera phone a bit like the Vivo V20. and that I am really happy to ascertain midrange smartphones doing so well during this category. With Xiaomi bringing a 108MP camera sensor in its latest Mi 10i, things are getting to get even more competitive in 2021’s mid-range market.

Alright, other things like the decision quality and network reception haven’t disappointed me in any way. It’s been around two months that I even have been using this phone and that I haven’t received one complaint from anyone on the receiving end, so that’s great.


Summing it up, I feel the Samsung Galaxy M51 may be a great midrange phone. With Samsung finally offering a competitive chipset and a well-optimized UI; the longer-term looks promising for the M-series unless there are more Exynos 9611-powered entries. Samsung Galaxy M51

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Samsung Galaxy M51 Long-Term Review: Pros & Cons


  • A necessary change of pace in Samsung mid-rangers
  • Excellent battery life—lasts almost two full days
  • Great Super AMOLED display with rich colours
  • Decent performance: both normal and gaming
  • Reliable cameras in terms of photos and videos


  • Average design, scratch-prone rear panel
  • No 90/120Hz smooth refresh rate display
  • Charging speed could’ve been a little faster

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