Samsung Galaxy M30s review

GSMArena team, 25 Dec 2019.

Excellent Super AMOLED panel

We meet the same tall 6.4-inch Super AMOLED panel with 1080 x 2340px resolution and a small notch on the top. Samsung calls this design Infinity-U. We are expecting the same performance as the M30 screen.

Samsung Galaxy M30s review

The maximum brightness we recorded is 441 cd/m2 but when the adaptive brightness toggle is switched on, the controller can boost the panel up to 642 cd/m2. We find the Max Auto brightness comparable to that of modern flagships and it's enough to overcome the bright sunlight outside.

Display test 100% brightness
Black,cd/m2 White,cd/m2 Contrast ratio
Samsung Galaxy M30s 0 441
Samsung Galaxy M30s (Max Auto) 0 642
Samsung Galaxy M30 0 437
Samsung Galaxy M30 (Max Auto) 0 641
Samsung Galaxy A50 0 424
Samsung Galaxy A50 (Max Auto) 0 551
Xiaomi Mi 9T 0 449
Xiaomi Mi 9T (Max Auto) 0 646
Xiaomi Redmi Note 8 Pro 0.347 460 1326:1
Xiaomi Redmi Note 8 Pro (Max Auto) 0.486 640 1317:1
Realme 5 Pro 0.273 512 1875:1
Motorola Moto G8 Plus 0.317 477 1505:1
Motorola Moto G8 Plus (Max Auto) 0.395 581 1471:1

Color accuracy in the default Vivid mode, however, isn't stellar. The average dE2000 is 4.9 with the maximum deviation reaching 14.1. The usual suspects are to blame - white and gray looks blue-ish and reds and greens are way over the top.

Switching on the Natural mode fixes all of the issues mentioned above. The average dE2000 falls down to 1.5 and the maximum is 3.8 - excellent results. This is definitely the mode to use if you are looking for accurate sRGB reproduction but honestly, Vivid looks better for day-to-day use.

Battery life

Expectedly, battery life on this thing is amazing. The efficient 10nm Exynos 9611 SoC combined with the humongous 6,000 mAh battery will probably be enough to last you through at least two full days of normal use. And our tests prove that the handset's battery endurance is among the best we've tested in the office. We got excellent readings on the on-screen and off-screen tests.

Samsung Galaxy M30s review

Our battery tests were automated thanks to SmartViser, using its viSerDevice app. The endurance rating above denotes how long a single battery charge will last you if you use the Samsung Galaxy M30s for an hour each of telephony, web browsing, and video playback daily. We've established this usage pattern so that our battery results are comparable across devices in the most common day-to-day tasks. The battery testing procedure is described in detail in case you're interested in the nitty-gritty. You can check out our complete battery test table, where you can see how all of the smartphones we've tested will compare under your own typical use.

Unfortunately, though, we can't say the same for the charging speeds. The standard 15W charging brick provided in the box isn't nearly enough to provide juice for a decent amount of time. It took 30 minutes to fill up 0% to 21% of the battery. It's the unfortunate mix of slow charging and huge battery capacity that has resulted in this low number.

Audio quality

Moving on to evaluating the output from its 3.5mm audio jack, the Samsung Galaxy M30s put in a great performance when hooked to an active external amplifier. Its scores were excellent and the loudness was nicely high too.

The volume dropped to just above average with headphones, though and the output lost some of its accuracy. A bit of intermodulation distortion and a slight nervousness to the frequency response appeared along with an average-sized hike in stereo crosstalk. A decent showing for the class, but not one that will make you reach for your wallet on its own.

TestFrequency responseNoise levelDynamic rangeTHDIMD + NoiseStereo crosstalk
Samsung Galaxy M30s+0.03, -0.05-93.793.50.00080.0078-93.2
Samsung Galaxy M30s (headphones)+0.17, -0.26-
Samsung Galaxy M30+0.03, -0.05-90.590.40.00570.016-90.0
Samsung Galaxy M30 (headphones)+0.26, -0.20-92.992.40.0950.249-59.1
Redmi Note 8+0.02, -0.02-
Redmi Note 8 (headphones)+0.35, -0.26-91.390.90.0150.445-45.4
Motorola Moto G8 Plus+0.02, -0.01-
Motorola Moto G8 Plus (headphones)+0.02, -0.01-
Realme X2+0.03, -0.06-92.692.60.00200.0080-88.1
Realme X2 (headphones)+0.30, -0.37-

Samsung Galaxy M30s frequency response
Samsung Galaxy M30s frequency response

You can learn more about the tested parameters and the whole testing process here.

Reader comments

  • Verma

After update in my Samsung M30s mobile started freezing and restart Authorized service center said Mother board damage with in 15 months. Now phone dead

  • sharmina gazi

the fakest phone, the restart problem started within 1 year of buying the phone. samsung company should be banned.

  • Anonymous

I am also facing the restart issue after updating software