Breve Análise do Smartphone Samsung Galaxy M21 - Simples, mas bom
Secondary Camera: 20 MPix f/2.2
Comparison Devices
Rating | Date | Model | Weight | Drive | Size | Resolution | Best Price |
---|---|---|---|---|---|---|---|
80 % | 09/2020 | Samsung Galaxy M21 Exynos 9611, Mali-G72 MP3 | 188 g | 64 GB UFS 2.1 Flash | 6.40" | 2340x1080 | |
75 % | 06/2020 | Sony Xperia L4 Helio P22 MT6762, PowerVR GE8320 | 178 g | 64 GB eMMC Flash | 6.20" | 1680x720 | |
77 % | 08/2020 | Oppo A72 SD 665, Adreno 610 | 192 g | 128 GB UFS 2.1 Flash | 6.50" | 2400x1080 | |
79 % | 06/2020 | Samsung Galaxy A41 Helio P65, Mali-G52 MP2 | 152 g | 64 GB eMMC Flash | 6.10" | 2400x1080 | |
81 % | 05/2020 | Xiaomi Redmi Note 9S SD 720G, Adreno 618 | 209 g | 128 GB UFS 2.0 Flash | 6.67" | 2400x1080 |
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Size Comparison
Networking | |
iperf3 Client (receive) TCP 1 m 4M x10 | |
Samsung Galaxy A41 | |
Oppo A72 | |
Samsung Galaxy M21 | |
Average of class Smartphone (5.9 - 1414, n=641) | |
Xiaomi Redmi Note 9S | |
Sony Xperia L4 | |
iperf3 Client (transmit) TCP 1 m 4M x10 | |
Samsung Galaxy A41 | |
Oppo A72 | |
Samsung Galaxy M21 | |
Average of class Smartphone (9.4 - 1599, n=641) | |
Xiaomi Redmi Note 9S | |
Sony Xperia L4 |
Image Comparison
Choose a scene and navigate within the first image. One click changes the position on touchscreens. One click on the zoomed-in image opens the original in a new window. The first image shows the scaled photograph of the test device.
Main camera: FlowersMain camera: CityscapeMain camera: Low-light photographyUltra wide-angle

|
iluminação: 95 %
iluminação com acumulador: 617 cd/m²
Contraste: ∞:1 (Preto: 0 cd/m²)
ΔE Color 2.11 | 0.6-29.43 Ø5.7
ΔE Greyscale 2.6 | 0.64-98 Ø5.9
141.3% sRGB (Calman 2D)
Gamma: 2.073
Samsung Galaxy M21 Super AMOLED, 2340x1080, 6.40 | Sony Xperia L4 IPS, 1680x720, 6.20 | Oppo A72 IPS LCD, 2400x1080, 6.50 | Samsung Galaxy A41 Super AMOLED, 2400x1080, 6.10 | Xiaomi Redmi Note 9S IPS, 2400x1080, 6.67 | |
---|---|---|---|---|---|
Screen | -103% | -100% | -18% | -46% | |
Brightness middle | 617 | 429 -30% | 505 -18% | 554 -10% | 622 1% |
Brightness | 614 | 404 -34% | 482 -21% | 559 -9% | 612 0% |
Brightness Distribution | 95 | 92 -3% | 93 -2% | 92 -3% | 94 -1% |
Black Level * | 0.26 | 0.55 | 0.56 | ||
Colorchecker DeltaE2000 * | 2.11 | 6.14 -191% | 6.3 -199% | 2 5% | 3.98 -89% |
Colorchecker DeltaE2000 max. * | 3.41 | 10.51 -208% | 10.1 -196% | 7.7 -126% | 7.33 -115% |
Greyscale DeltaE2000 * | 2.6 | 6.6 -154% | 6.8 -162% | 1.6 38% | 4.5 -73% |
Gamma | 2.073 106% | 2.23 99% | 2.29 96% | 2.11 104% | 2.206 100% |
CCT | 6921 94% | 8346 78% | 8161 80% | 6589 99% | 7361 88% |
Contrast | 1650 | 918 | 1111 | ||
Color Space (Percent of sRGB) | 114.9 |
* ... smaller is better
Screen Flickering / PWM (Pulse-Width Modulation)
Screen flickering / PWM detected | 215.5 Hz | ||
The display backlight flickers at 215.5 Hz (Likely utilizing PWM) . The frequency of 215.5 Hz is relatively low, so sensitive users will likely notice flickering and experience eyestrain at the stated brightness setting and below. In comparison: 51 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 9725 (minimum: 5 - maximum: 142900) Hz was measured. |
Display Response Times
↔ Response Time Black to White | ||
---|---|---|
8 ms ... rise ↗ and fall ↘ combined | ↗ 5 ms rise | |
↘ 3 ms fall | ||
The screen shows fast response rates in our tests and should be suited for gaming. In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 8 % of all devices are better. This means that the measured response time is better than the average of all tested devices (24.4 ms). | ||
↔ Response Time 50% Grey to 80% Grey | ||
10 ms ... rise ↗ and fall ↘ combined | ↗ 5 ms rise | |
↘ 5 ms fall | ||
The screen shows good response rates in our tests, but may be too slow for competitive gamers. In comparison, all tested devices range from 0.8 (minimum) to 636 (maximum) ms. » 9 % of all devices are better. This means that the measured response time is better than the average of all tested devices (38.7 ms). |
Geekbench 5.3 | |
OpenCL Score 5.3 (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Average Samsung Exynos 9611 (1565 - 1605, n=3) | |
Average of class Smartphone (255 - 5532, n=64) | |
Vulkan Score 5.3 (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Average Samsung Exynos 9611 (1208 - 1345, n=3) | |
Average of class Smartphone (72 - 4789, n=67) | |
64 Bit Multi-Core Score (sort by value) | |
Samsung Galaxy M21 | |
Sony Xperia L4 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (1207 - 1387, n=4) | |
Average of class Smartphone (421 - 4201, n=165) | |
64 Bit Single-Core Score (sort by value) | |
Samsung Galaxy M21 | |
Sony Xperia L4 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (345 - 349, n=4) | |
Average of class Smartphone (124 - 1604, n=165) |
PCMark for Android | |
Work 2.0 performance score (sort by value) | |
Samsung Galaxy M21 | |
Sony Xperia L4 | |
Oppo A72 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (5080 - 5925, n=7) | |
Average of class Smartphone (82 - 15299, n=564) | |
Work performance score (sort by value) | |
Samsung Galaxy M21 | |
Sony Xperia L4 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (5777 - 6697, n=7) | |
Average of class Smartphone (1077 - 19989, n=714) |
GFXBench (DX / GLBenchmark) 2.7 | |
1920x1080 T-Rex HD Offscreen C24Z16 (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (28 - 48, n=7) | |
Average of class Smartphone (0.5 - 322, n=834) | |
T-Rex HD Onscreen C24Z16 (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (25 - 44, n=7) | |
Average of class Smartphone (1 - 142, n=843) |
GFXBench 3.0 | |
off screen Manhattan Offscreen OGL (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (17 - 26, n=7) | |
Average of class Smartphone (0.8 - 180, n=739) | |
on screen Manhattan Onscreen OGL (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (15 - 24, n=7) | |
Average of class Smartphone (1.2 - 117, n=747) |
GFXBench 3.1 | |
off screen Manhattan ES 3.1 Offscreen (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (10 - 16, n=7) | |
Average of class Smartphone (0.87 - 117, n=602) | |
on screen Manhattan ES 3.1 Onscreen (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (8.9 - 14, n=7) | |
Average of class Smartphone (1.2 - 110, n=604) |
AnTuTu v8 - Total Score (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (152185 - 187087, n=7) | |
Average of class Smartphone (53335 - 624727, n=152) |
BaseMark OS II | |
Web (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (10 - 1202, n=7) | |
Average of class Smartphone (7 - 2169, n=764) | |
Graphics (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (2127 - 2168, n=7) | |
Average of class Smartphone (18 - 16996, n=764) | |
Memory (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (1291 - 2122, n=7) | |
Average of class Smartphone (21 - 8874, n=764) | |
System (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (2839 - 4978, n=7) | |
Average of class Smartphone (369 - 14189, n=764) | |
Overall (sort by value) | |
Samsung Galaxy M21 | |
Oppo A72 | |
Samsung Galaxy A41 | |
Xiaomi Redmi Note 9S | |
Average Samsung Exynos 9611 (634 - 2191, n=7) | |
Average of class Smartphone (1 - 6402, n=764) |
Jetstream 2 - Total Score | |
Xiaomi Redmi Note 9S (Chrome 81) | |
Average of class Smartphone (9.13 - 161, n=226) | |
Samsung Galaxy A41 (Chrome 83.0.4103.101) | |
Samsung Galaxy M21 (Chrome 85) | |
Average Samsung Exynos 9611 (27.5 - 30.6, n=7) | |
Oppo A72 (Chrome 83) |
JetStream 1.1 - Total Score | |
Xiaomi Redmi Note 9S (Chrome 81) | |
Samsung Galaxy A41 (Chrome 83.0.4103.101) | |
Average Samsung Exynos 9611 (47.5 - 51.9, n=7) | |
Average of class Smartphone (10 - 375, n=659) | |
Samsung Galaxy M21 (Chrome 85) |
Speedometer 2.0 - Result | |
Average of class Smartphone (6.42 - 196, n=205) | |
Xiaomi Redmi Note 9S (Chome 81) | |
Average Samsung Exynos 9611 (26.6 - 30.5, n=7) | |
Oppo A72 (Chrome 83) | |
Samsung Galaxy A41 (Chrome 83.0.4103.101) | |
Samsung Galaxy M21 (Chome 85) |
WebXPRT 3 - --- | |
Average of class Smartphone (19 - 194, n=297) | |
Xiaomi Redmi Note 9S (Chrome 81) | |
Samsung Galaxy M21 (Chrome 85) | |
Average Samsung Exynos 9611 (46 - 57, n=7) | |
Samsung Galaxy A41 (Chrome 83.0.4103.101) | |
Oppo A72 (Chrome 83) |
Octane V2 - Total Score | |
Xiaomi Redmi Note 9S (Chrome 81) | |
Samsung Galaxy A41 (Chrome 83.0.4103.101) | |
Samsung Galaxy M21 (Chrome 85) | |
Average Samsung Exynos 9611 (7442 - 10687, n=7) | |
Oppo A72 (Chrome 83) | |
Average of class Smartphone (894 - 58632, n=829) |
Mozilla Kraken 1.1 - Total Score | |
Average of class Smartphone (460 - 59466, n=855) | |
Average Samsung Exynos 9611 (4332 - 6212, n=7) | |
Samsung Galaxy M21 (Chrome 85) | |
Oppo A72 (Chrome 83) | |
Samsung Galaxy A41 (Chrome 83.0.4103.101) | |
Xiaomi Redmi Note 9S (Chrome 81) |
* ... smaller is better
Samsung Galaxy M21 | Sony Xperia L4 | Oppo A72 | Samsung Galaxy A41 | Xiaomi Redmi Note 9S | Average 64 GB UFS 2.1 Flash | Average of class Smartphone | |
---|---|---|---|---|---|---|---|
AndroBench 3-5 | -30% | -8% | -15% | 1% | -4% | -33% | |
Sequential Write 256KB SDCard | 62.2 (Toshiba Exceria Pro M501) | 62.5 (Toshiba Exceria Pro M501) 0% | 31.2 (Toshiba Exceria Pro M501) -50% | 67 (Toshiba Exceria Pro M501) 8% | 54.9 (Toshiba Exceria Pro M501) -12% | 51.8 (17.1 - 71.9, n=32) -17% | 51.6 (1.7 - 87.1, n=564) -17% |
Sequential Read 256KB SDCard | 77.9 (Toshiba Exceria Pro M501) | 83.5 (Toshiba Exceria Pro M501) 7% | 37.76 (Toshiba Exceria Pro M501) -52% | 83.01 (Toshiba Exceria Pro M501) 7% | 74.5 (Toshiba Exceria Pro M501) -4% | 68.1 (18 - 87.1, n=32) -13% | 69.5 (8.1 - 96.5, n=564) -11% |
Random Write 4KB | 124.2 | 22.5 -82% | 152.9 23% | 72.53 -42% | 123.6 0% | 68.8 (8.77 - 165, n=43) -45% | 40.3 (0.14 - 319, n=934) -68% |
Random Read 4KB | 126 | 61.2 -51% | 135.91 8% | 84 -33% | 137 9% | 133 (78.2 - 173, n=43) 6% | 63.1 (1.59 - 325, n=934) -50% |
Sequential Write 256KB | 192.7 | 165 -14% | 234.61 22% | 211.05 10% | 214.8 11% | 199 (133 - 388, n=43) 3% | 139 (2.99 - 1321, n=934) -28% |
Sequential Read 256KB | 487.8 | 293.4 -40% | 504.32 3% | 299.89 -39% | 496.6 2% | 703 (476 - 895, n=43) 44% | 363 (12.1 - 2037, n=934) -26% |
(±) The maximum temperature on the upper side is 42.5 °C / 109 F, compared to the average of 35.2 °C / 95 F, ranging from 22.4 to 51.7 °C for the class Smartphone.
(+) The bottom heats up to a maximum of 39.2 °C / 103 F, compared to the average of 33.8 °C / 93 F
(+) In idle usage, the average temperature for the upper side is 27.8 °C / 82 F, compared to the device average of 32.9 °C / 91 F.
Samsung Galaxy M21 audio analysis
(+) | speakers can play relatively loud (83.8 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 29.5% lower than median
(±) | linearity of bass is average (12% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 7.9% higher than median
(+) | mids are linear (6.7% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.9% higher than median
(±) | linearity of highs is average (7.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (28% difference to median)
Compared to same class
» 76% of all tested devices in this class were better, 8% similar, 16% worse
» The best had a delta of 13%, average was 24%, worst was 65%
Compared to all devices tested
» 85% of all tested devices were better, 4% similar, 11% worse
» The best had a delta of 3%, average was 21%, worst was 65%
Samsung Galaxy A41 audio analysis
(+) | speakers can play relatively loud (85.5 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 27.8% lower than median
(±) | linearity of bass is average (14.4% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.9% higher than median
(+) | mids are linear (5.8% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 9.7% higher than median
(±) | linearity of highs is average (7.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (27.3% difference to median)
Compared to same class
» 74% of all tested devices in this class were better, 8% similar, 18% worse
» The best had a delta of 13%, average was 24%, worst was 65%
Compared to all devices tested
» 83% of all tested devices were better, 5% similar, 13% worse
» The best had a delta of 3%, average was 21%, worst was 65%
desligado | ![]() ![]() |
Ocioso | ![]() ![]() ![]() |
Carga |
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Key:
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Samsung Galaxy M21 6000 mAh | Oppo A72 5000 mAh | Samsung Galaxy A41 3500 mAh | Xiaomi Redmi Note 9S 5020 mAh | Average Samsung Exynos 9611 | Average of class Smartphone | |
---|---|---|---|---|---|---|
Power Consumption | 20% | 29% | -8% | -11% | 17% | |
Idle Minimum * | 1.2 | 0.7 42% | 0.96 20% | 1.5 -25% | 1.173 (0.9 - 1.6, n=7) 2% | 0.89 (0.2 - 3.4, n=926) 26% |
Idle Average * | 1.8 | 1.97 -9% | 1.57 13% | 2.1 -17% | 2.28 (1.7 - 4.24, n=7) -27% | 1.758 (0.6 - 6.2, n=925) 2% |
Idle Maximum * | 2.1 | 1.98 6% | 1.61 23% | 2.5 -19% | 2.86 (1.8 - 4.34, n=7) -36% | 2.04 (0.74 - 6.6, n=926) 3% |
Load Average * | 6.2 | 3.83 38% | 2.93 53% | 5.2 16% | 5.97 (5 - 6.99, n=7) 4% | 4.12 (0.8 - 10.8, n=920) 34% |
Load Maximum * | 7.9 | 6.2 22% | 4.97 37% | 7.5 5% | 7.83 (6.3 - 9.4, n=7) 1% | 6.13 (1.2 - 14.2, n=920) 22% |
* ... smaller is better
Samsung Galaxy M21 6000 mAh | Sony Xperia L4 3580 mAh | Oppo A72 5000 mAh | Samsung Galaxy A41 3500 mAh | Xiaomi Redmi Note 9S 5020 mAh | |
---|---|---|---|---|---|
Battery Runtime | -40% | -22% | -26% | -5% | |
Reader / Idle | 2297 | 1843 -20% | 2263 -1% | ||
H.264 | 1352 | 998 -26% | 1269 -6% | ||
WiFi v1.3 | 1298 | 783 -40% | 1018 -22% | 650 -50% | 1187 -9% |
Load | 289 | 268 -7% | 279 -3% |
Pro
Contra
Veredicto – Para quem procura algo sólido
O Samsung Galaxy M21 oferece um sistema de câmera medíocre e um nível de desempenho medíocre. Outros fabricantes estão perseguindo especificações e colocando ênfase no desempenho da câmera. A Samsung constrói apenas smartphones sólidos, que não têm fraquezas e oferecem alguns recursos especiais além.
O Galaxy M21 está no lugar exato, que smartphones muito mais expressivos com bateria muito boa e telas OLED brilhantes costumavam ocupar.
O Samsung Galaxy M21 é um smartphone sólido como uma rocha, de gama média inferior, com uma tela excelente e bateria com boa duração.
O Samsung Galaxy M21 é um smartphone sólido como uma rocha, de gama média inferior, com uma tela excelente e bateria com boa duração. Não é tão eficiente em termos de energia ou poderoso quanto os SoCs da concorrência, mas ainda oferece um nível de desempenho bastante decente.
No dia-a-dia, o Galaxy M21 é bom, e traz para a mesa tudo que um smartphone dessa faixa de preço deveria oferecer.
Samsung Galaxy M21 - 09/24/2020 v7
Florian Schmitt