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Oppo Reno4 Pro vs Samsung Galaxy S21 Plus: Which to Pick?

author Luis Silva (February 2021 Updated: August 2021 - 6 min. reading time)

The Galaxy S21 Plus comes at a higher price, but it's the best of the two.

It comes with better performance (+72%), better glass protection, a better display, water-resistance, and better battery life.

Are there other things worth mentioning?

The Galaxy S21 Plus also has a higher refresh rate, larger (+0.2") display, wireless charging, and reverse wireless charging. But the Reno4 Pro brings a telephoto lens (+23 mm), a lightweight body (28 g./0.99 oz less), faster-charging speeds (65w vs. 25w), and Bluetooth 5.1.

How much more will those additional features cost me?

If you're considering a new and unlocked smartphone, you'll have to invest an additional amount close to $405.

Is it still worth buying the Reno4 Pro in 2021?

The Oppo Reno4 Pro isn't the most cutting-edge device in 2021, but it's still a powerful phone. Sure there are other devices like the Galaxy S10 Plus, but this one does hold a good battery life and fast charging.

Keep reading to learn more about what sets them apart, how they rival their competition, and how the industry is scoring their specs.

Check prices on Amazon Check prices on Amazon
Click here or scroll down to check prices on eBay, BestBuy, and Walmart.

I earn a small fee from qualifying purchases. It doesn't affect the price you pay nor my opinions.

Oppo Reno4 ProSamsung Galaxy S21 Plus

CONTENTS

Click on one of these
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Introduction

Samsung introduced its Galaxy S21 Plus model last January. Meanwhile, Oppo's Reno4 Pro started to sell in June 2020.

In this article, we see how the Reno4 Pro and the Galaxy S21 Plus compare to each other to help you decide and see which one of these is the right one for you.

The weight of each section

For additional information regarding our smartphone comparisons, check this FAQ.

to check who their rivals are.

Price*
vs.
Device Reno4 Pro Galaxy S21 Plus
Release Date 2020, June 2021, January 1y.
OS Updates 2 years 3 years 1y.
Security Updates 2 years 4 years 2y.

*Reference: 100: Samsung Galaxy Note 20 Ultra.

Which One Has The Best Performance?

As for performance, Geekbench 5 scores the Galaxy S21 Plus 72% ahead of its competitor in the multi-core ranking. Speed isn't everything, but in this case, it's a lot!

When it comes to performance, the Reno4 Pro is way under the average against similarly priced phones. It got a score of 1805, compared to the usual 2741, or close to that.

We can classify the Reno4 Pro as an upper mid-range and the Galaxy S21 Plus as high-end.

Performance*
vs.
Features Reno4 Pro Galaxy S21 Plus
SoC Snapdragon 765 Exynos 2100
Graphics Adreno 620 Mali-G78 MP14
Geekbench 5 Score 1805
3113
1308
OS Android 10 and ColorOS 7 Android 11 and OneUI
Tek-Score
5.0
7.2
2.2

*Reference: 100: Apple iPhone 12.

Which Phone Has The Best Display?

Oppo Reno4 Pro front transparent png Samsung Galaxy S21 Plus front transparent png

The Galaxy S21 Plus is the title-holder here, but this is pretty much a tie.

The Galaxy S21 Plus has one disadvantage over most competitors at its price range: Its display density is 97 DPI below the usual.

Bearing in mind the Reno4 Pro, 93% of its rivals can play HDR content, 97% have an AMOLED screen, and 90% have an Always-On display.

Concerning the Galaxy S21 Plus, I should say that 89% of its rivals can play HDR content. Plus, all have an AMOLED screen, and 93% have an Always-On display.

Display Density (DPIs)*
vs.
Features Reno4 Pro Galaxy S21 Plus
Size 6.5
6.7
0.2
Screen Type AMOLED AMOLED
Resolution (px) 1080x2400
1080x2400
0
Refresh Rate 60hz 120hz 60
Dots per Inch 404.89
392.81
-12.09
Always-On-Display Yes Yes
Notch Hole Hole
Peak Brightness 845 nits
883 nits
38
HDR - HDR10+
Sub Tek-Score
8.4
9.0
0.6
Protection Corning Gorilla Glass 5 Corning Gorilla Glass Victus
Tek-Score
6.6
9.6
3.1

*Reference: 100: Sony Xperia 1 II.

Which Phone Has The Best Cameras?

Oppo Reno4 Pro back transparent png Samsung Galaxy S21 Plus back transparent png

If you value quality photos, you should know that the Galaxy S21 Plus is about 32% above its adversaries from its price range. And it should be your option today.

About the Reno4 Pro: This camera came out of DXOMARK's labs with a score of 109. If you add the telephoto and wide-angle lenses, you'll end up with a score of 120. For a thorough review, click here.

Last (but not least), you should know that all of its rivals can record videos in 4K or more and have an ultra-wide-angle lens, and 93% feature Optical Image Stabilization. Although only 21% of them feature a macro lens.

About the Galaxy S21 Plus: DXOMARK evaluated this camera, and here's the score: 123. By adding its wide-angle lens, that score goes up to 137. You can click here to check it out.

Last (but not least), just like the other device, all of its rivals can record videos in 4 or 8K and have an ultra-wide-angle lens, and 93% feature Optical Image Stabilization. Moreover, only 15% of them feature a macro lens.

We can classify the Reno4 Pro as an upper mid-range and the Galaxy S21 Plus in the high-end ballpark.

Picture Quality*
vs.
Primary Camera Reno4 Pro Galaxy S21 Plus
Megapixels 48
12
-36
Aperture 1.7
1.8
0.1
Lens 26mm
26mm
0
Lens Type Wide-Angle Wide-Angle
Flash 1 1 0
HDR Yes Yes
OIS Yes Yes
Video 2160 4320 2160
Score 120
137
17

*Reference: 100: Xiaomi Mi 11 Ultra.

Extra Camera(s) Reno4 Pro Galaxy S21 Plus vs.
Megapixels 13
64
51
Aperture 2.4
2.0
-0.4
Lens 52mm (2x zoom)
29mm -23
Lens Type Telephoto lens Regular
Megapixels 12 12 0
Aperture 2.2 2.2 0.0
Lens 16mm 13mm -3
Lens Type Wide-Angle Ultra-wide-Angle
Score 11 14 3
Selfie Camera Reno4 Pro Galaxy S21 Plus vs.
Megapixels 32
10
-22
Aperture 2.4
2.2
-0.2
Lens 26mm 26mm 0
Reno4 Pro Galaxy S21 Plus vs.
Tek-Score
7.1
8.1
1.0

Who has the best frame?

I'd go for the Galaxy S21 Plus for its water resistance.

The Galaxy S21 Plus is 28 g. (1.10 oz) heavier than the other, weighing about 172 g. (6.07 oz). But because this is a bit relative, the Reno4 Pro has a "weight to screen size" score of 7.2, which suggests a pretty nice weight for a 6.5 inches display. Having said that, the Galaxy S21 Plus has 4.6, so nothing to state here.

The Galaxy S21 Plus truly is water-resistant. It can be submerged 1 to 3 meters deep. That shouldn't last over half an hour, on standby, and freshwater only.

Looks*
vs.
Body Reno4 Pro Galaxy S21 Plus
Size 159 x 72 x 7 mm
(5.61 x 2.54 x 0.25 in)
161 x 75 x 7 mm
(5.68 x 2.65 x 0.25 in)
4389
Weight 172 g. (6.07 oz)
200 g. (7.05 oz)
28
Build Front and back glass Front and back glass
Colors Galactic Blue, White, Space Black, Pink, and Green Phantom Black, Phantom Violet, Phantom Silver, Phantom Red, Phantom Gold, and Phantom Pink
Screen To Body Ratio 89.10%
89.75%
0.65
Disp.Size To Weight Score 7.2 4.6 -2.6
Looks 10.0/10
10.0/10
0.0
Waterproof - IP68
Biometrics Under Display Fingerprint Under Display Fingerprint
Tek-Score
3.2
7.2
4.0

*100% = 4+ colors + front and back glass + S2BR: 86+%.

Which has the best battery?

The Reno4 Pro does have a battery capacity of 4000 mAh versus the 4800 mAh of the Galaxy S21 Plus. And as claimed by GSMArena, the latter is the one that stands out.

For the record, the Galaxy S21 Plus also does overcome pretty much every phone out there. Just check out our best-of listing.

Fast charging on the Reno4 Pro does stand out. Other devices from this price range rarely exceed 30 watts.

Battery*
vs.
Features Reno4 Pro Galaxy S21 Plus
Capacity (mAh) 4000 4800 800
1h Talk + 1h Web + 1h Video 82% left
84% left
2
1h Talk + 3h Web + 1h Video 64% left
70% left
6
1h Talk + 1h Web + 3h Video 71% left
74% left
3
Bat. To Phone Size Score 4.9 4.1 -0.7
Sub Tek-Score
7.2
7.6
0.4
Fast Charging 65w
25w
-40
Wireless Charging No 15w
15
Reverse Charging No 4.5w
4.5
Tek-Score
6.9
7.3
0.4

*Reference: 90: Samsung Galaxy A31.

Which has more storage?

None of them has.

Storage*
vs.
Features Reno4 Pro Galaxy S21 Plus
RAM (GB) 8GB
8GB
0
Internal (GB) 128GB
128GB
0
Micro SD No No
Tek-Score
6.0
6.0
0.0

*Internal Storage + 256GB Memory Card (Max: 512GB).

Which is the most connectivity-friendly?

You can only get Bluetooth 5.1 with the Reno4 Pro.

If you love good-old wired headphones, you're out of luck because none of them included a 3.5mm headphone jack. You can buy an adapter, but the wireless buds are your only option. You can have it anyway if you don't care that much about them. The Sony Xperia 1 II can help you with that.

You can find the Reno4 Pro in the LTE or (LTE and) 5G variants. You can get a headphone jack, a plastic back, a MicroSD slot, a macro lens, a Snapdragon 720G, and a GeekBench 5 score of 1781 on the 4G variant of the Reno4 Pro.

Connectivity
vs.
Features Reno4 Pro Galaxy S21 Plus
Network 5G (also available in LTE) 5G
Bluetooth 5.1
5.0
NFC Yes Yes
3.5mm jack No No
Tek-Score
5.1
4.6
-0.5

Which is more affordable?

Here are the best prices that we've found:

Oppo Reno4 Pro

Reference: $594

Oppo Reno4 Pro

Samsung Galaxy S21 Plus

Reference: $999

Samsung Galaxy S21 Plus

I earn a small fee from qualifying purchases. It doesn't affect the price you pay nor my opinions, but it will mean a lot if you click on one of these buttons before purchasing your next phone (or whatever else you end up buying). You'll be helping to take this to the next level.

Prices on eBay are in $US but Europe-based. You can click to check the prices in your country.

Prices marked with ! are from renewed/refurbished/carrier-locked phones (except eBay prices that, as a last resort, can be from bids or used devices).

How much of a "phone" can your money buy?
That's how much "score" you can get with $100 based on the global score that you'll see in the next section (higher is better).

Have you found better prices elsewhere? The formula is simple: score/price*100.

Value for money Reno4 Pro Galaxy S21 Plus VS
Amazon - 1.00 -
eBay 1.02 1.25 0.22
Best Buy - 0.93 -
Walmart - - -

Also, don't forget to check the latest deals from these four stores, and the state of the art on mobile technology, if you don't want to overpay on your next smartphone.


Related articles:


Best smartphone deals


The Best Unbiased Smartphones For All Budgets


Smartphone Specs Statistics: The State Of The Art (Q1 2021)

So, what about that global score? We'll get there. But first, let's see where its rivals are. They're usually close to 7.0 for both of them.

Verdict: What Makes the Samsung Galaxy S21 Plus Stand Out?

What can the Oppo Reno4 Pro give you that the Samsung Galaxy S21 Plus can't:

- More affordable

- A telephoto lens (+23 mm)

- Lighter (28 g./0.99 oz less)

- Faster charging speeds (65w vs. 25w)

- Bluetooth 5.1

What can the Samsung Galaxy S21 Plus give you that the Oppo Reno4 Pro can't:

- Better performance (+93%)

- Higher refresh rates

- Better glass protection

- Better display

- A larger display (+0.2")

- Better cameras

- Water-resistant

- Better battery life

- More OS updates (2 additional years)

- Wireless charging

- Reverse wireless charging

Pros Reno4 Pro Galaxy S21 Plus
#1 AMOLED Performance
#2 Always-On-Display AMOLED
#3 Cameras Always-On-Display
#4 Fast Charging Cameras
#5 Battery Life
#6 Fast Charging
#7 Wireless Charging
#8 Glass Protection
Cons Reno4 Pro Galaxy S21 Plus
#1 Wireless Charging MicroSD Slot
#2 MicroSD Slot Weight
#3 3.5mm Jack 3.5mm Jack
#4 Price Price
Relative Score*
vs.
Global Score Reno4 Pro Galaxy S21 Plus
Gaming Score
5.5
7.6
2.1
Tek-Score
6.08
7.47
1.39
Your Score

Scroll the sliders down below to get your own personalized score. Let's suppose you value performance and battery life, and you don't really care about anything else. Then, just set the "Performance" and the "Battery" sliders up to 5 (5+5=10), and then the other sliders down to 0. You'll know what's the best phone for you.

Performance 1.9
Display 1.7
Cameras 1.4
Frame 0.9
Battery 1.9
Storage 2.0
Connectivity 0.4
Total Should be 10 or as close as possible: 9.6

*Reference: 100: Samsung Galaxy Note 20 Ultra.

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About me

Hello!

My name is Luis Silva, and I have a degree in computer management. Ever since I was a teenager, I've loved everything to do with tech. Music, pictures, video editing, I've done it all! This site is a place for me to share some of the knowledge I have, as well as keep up-to-date with current trends. This is a wonderful place for tech-geeks and everyone else that just want to learn more about tech and smartphones in general.


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Oppo Reno4 Pro Related Comparisons


Samsung Galaxy S21 Plus Related Comparisons

×

"Display size to phone weight" ratio explained

This indeed is a "display size to phone weight" ratio, but because every phone ended up somewhere between 0.0272 and 0.0421, I've amplified (adapted) those values so they would fit in a 0-10 scale. As of now, the best smartphone is the Samsung Galaxy A40, with 140g. (4.94 oz) for a 5.9 inch display. It got a score of 9.92. While the worse device is the iPhone 8 Plus, which weighs 202 g. (7.13 oz) and has a 5.5-inch display. It ended up with a score of 0.75.

Please, be aware that this score is subject to change if and when a new smartphone comes along that ends up being outside of this scale.

×

"Battery to device size" ratio explained

This score should give you an idea about the energy footprint of the devices you're considering. It reflects not only the hardware and the energy that it requires but also the amount of energy that the battery can deliver.

The major spenders on any device should be the display and the SoC. But everything from a notification led to its modems need to be optimized, or else, the OEM should simply include a bigger battery as a compensation. Unfortunately, it isn't always possible due to size limitations. But in the end, if a particular OEM can do a good job and give you excellent battery life on a small device, so should everyone else. That's why I've added a "battery to device size" ratio. But since the real scale went from 119 (for the Galaxy S10e, Snapdragon variant) and up to 164 (for the iPhone 7 Plus), I've decided to convert them so they would fit in a 0-10 scale, being 0 the worst device, (the iPhone 7 Plus) and 10 the one every OEM should look up to.

As an example, Apple did an excellent job on the iPhone 7. It has a score of 8. Despite having a small capacity, the hardware is well optimized, and it still gives you decent battery life considering its size. The iPhone 7 Plus, on the other hand, with those bezels shrinking its display size, clearly could've been the #1 in our top 10 list of best battery devices if Apple simply filled all that empty space with a bigger battery.

As a side note: I haven't included the dept of the devices in this formula because even if a device ended up being 1mm/0.03 inches thicker, it wouldn't matter that much to those who really value battery life.

Please, be aware that this score is subject to change if and when a new smartphone comes along that ends up being outside of this scale.

×

Rivals

As of now, these are the rivals that were considered for each of them. They may change every time its prices are updated.

These are the lowest prices found on Amazon, eBay, BestBuy, and Walmart.


 Oppo Reno4 Pro 
  • ApplerivaliPhone 12
    $689
  • SonyrivalXperia 1
    $688
  • SonyrivalXperia 5
    $649
  • SamsungrivalGalaxy Note 10+
    $565
  • ApplerivaliPhone X
    $579
  • ApplerivaliPhone 11
    $575
  • SamsungrivalGalaxy Note 9
    $598
  • ApplerivaliPhone 11 Pro
    $684
  • ApplerivaliPhone XS Max
    $650
  • SamsungrivalGalaxy S10
    $499
  • SamsungrivalGalaxy S10 Plus
    $689
  • SamsungrivalGalaxy S10e SD
    $499
  • SamsungrivalGalaxy S10+ EX
    $689
  • SamsungrivalGalaxy S20 EX
    $697
  • SamsungrivalGalaxy S20 SD
    $535
  • SamsungrivalGalaxy S20+ SD
    $535
  • SamsungrivalGalaxy S10 SD
    $499
  • OnePlusrival7T Pro
    $503
  • HuaweirivalP30 Pro
    $599
  • SamsungrivalGalaxy S20
    $697
  • SamsungrivalGalaxy S20 Plus
    $600
  • HuaweirivalP40
    $666
  • OnePlusrival8
    $480
  • XiaomirivalMi 10 Pro
    $600
  • GooglerivalPixel 5
    $580
  • SamsungrivalGalaxy S21 Plus
    $600
  • XiaomirivalMi 10T Pro
    $480
  • OnePlusrival8T
    $549
  • XiaomirivalMi 10
    $529
  • SonyrivalXperia 1 II
    $650
  • XiaomirivalMi 11
    $698
  • OnePlusrival9
    $551
  • OpporivalFind X3 Lite
    $554

 Samsung Galaxy S21 Plus 
  • ApplerivaliPhone 12
    $689
  • SonyrivalXperia 1
    $688
  • SonyrivalXperia 5
    $649
  • SamsungrivalGalaxy Note 10+
    $565
  • ApplerivaliPhone X
    $579
  • ApplerivaliPhone 11
    $575
  • SamsungrivalGalaxy Note 9
    $598
  • ApplerivaliPhone 11 Pro
    $684
  • ApplerivaliPhone XS Max
    $650
  • SamsungrivalGalaxy S10
    $499
  • SamsungrivalGalaxy S10 Plus
    $689
  • SamsungrivalGalaxy S10e SD
    $499
  • SamsungrivalGalaxy S10+ EX
    $689
  • SamsungrivalGalaxy S20 EX
    $697
  • SamsungrivalGalaxy S20 SD
    $535
  • SamsungrivalGalaxy S20+ SD
    $535
  • SamsungrivalGalaxy S10 SD
    $499
  • OnePlusrival7T Pro
    $503
  • HuaweirivalP30 Pro
    $599
  • SamsungrivalGalaxy S20
    $697
  • SamsungrivalGalaxy S20 Plus
    $600
  • HuaweirivalP40
    $666
  • XiaomirivalMi 10 Pro
    $600
  • GooglerivalPixel 5
    $580
  • OnePlusrival8T
    $549
  • XiaomirivalMi 10
    $529
  • OpporivalReno4 Pro
    $594
  • SonyrivalXperia 1 II
    $650
  • XiaomirivalMi 11
    $698
  • OnePlusrival9
    $551
  • OpporivalFind X3 Lite
    $554
×

Formula deviation

Since the guys at DxoMark don't review every camera out there, I've come up with a formula based on the ones that they do rate, so I could get an equivalent score for the ones they don't review. After testing it against these cameras, I got the deviation between that and their DxO score.

Device: DxOScore Deviation
Samsung Galaxy A50: 88 -1
Apple iPhone XR: 104 1
Xiaomi Mi 9T Pro: 108 -7
Xiaomi Redmi Note 8 Pro: 87 1
Sony Xperia 1: 99 -1
Sony Xperia 5: 101 1
Samsung Galaxy Note 8: 100 0
Samsung Galaxy Note 10 Plus: 126 2
Apple iPhone 8 Plus: 96 -3
Xiaomi Pocophone F1: 92 -1
Apple iPhone 7 Plus: 90 -1
Apple iPhone X: 101 3
Apple iPhone 11: 112 -1
Samsung Galaxy Note 8: 100 0
Samsung Galaxy Note 9: 107 1
Apple iPhone XS Max: 110 -2
Apple iPhone 11 Pro Max: 124 1
Samsung Galaxy S10: 124 2
Apple iPhone XS: 110 -1
Samsung Galaxy S10 Plus: 120 -2
OnePlus 7 Pro: 122 0
OnePlus 7T Pro: 122 0
Huawei P30 Pro: 125 -1
Google Pixel 4: 117 0
Google Pixel 3: 103 0
Google Pixel 2: 100 0
Samsung Galaxy S20 Plus: 127 -2
Samsung Galaxy S20 Ultra: 132 2
OnePlus 6: 100 0
OnePlus 6T: 101 1
Samsung Galaxy S9 Plus: 105 -1
Huawei Mate 20 Pro: 120 0
Xiaomi Mi 9: 115 0
Huawei Mate 30 Pro: 132 0
Huawei P40 Pro: 140 -1
Apple iPhone SE 2: 101 0
OnePlus 8 Pro: 126 0
Xiaomi Mi 8: 105 1
Samsung Galaxy A71: 89 1
Xiaomi Mi 10 Pro: 134 0

As you can see, most cameras sit between 1 and -1, while a few of them go up to 2 or -2. That means it's reasonable to assume other similar cameras that they don't review to, in the worst-case scenario, be anywhere from -2 to 2 points from the score that the formula gets.

For example: Given that the Pixel 4 got 117 points and that the Pixel 4 XL share the same year and camera specs, it's reasonable to expect a score of 117 too. But in reality, if they do review that camera, it may end up anywhere between 115 and 119.

Be aware that at DxO, they give a score based on their opinion, not based on any formula. That's why I think there's an odd difference of 6 points between the iPhone 8 Plus and the iPhone X. In theory, they should have the same camera.

I'm guessing that the Mi 9T Pro got a deviation of 7 points because they tested its Chinese variant (the K20 Pro).

Update: They just changed their protocol to include preview image evaluation and trustability. I'm keeping the old table (for now) for reference purposes, and I'll be adding a new one as soon as they review at least a couple of new mclass-range cameras.

You can expect the same (or a bit bigger) deviation for high-end cameras, but anything with a score below 100-110 should be taken with a grain of salt.

This is valid for all cameras tested with the previous protocol. For those that they dclassn't test, the deviation may be up to twice as much.

×

About GeekBench 5

This is just a quick note to let you know that, if, by any chance, the smartphone you're looking for isn't on the GeekBench site yet, you can check on GsmArena.com, as they also usually test smartphones with that benchmark tool.



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