Xiaomi Redmi Note 4 (S625) review: Take Note!

Take Note!

GSMArena team, 27 March 2017.

Display

Xiaomi Redmi Note 4 has a 5.5" IPS LCD screen of 1080p resolution (401ppi) with no color shifting at an angle. The company promises 1000:1 contrast ratio and 72% coverage of NTSC color spectrum.

Xiaomi Redmi Note 4 Snapdragon review

The Snapdragon-powered unit of Redmi Note 4 exceeds the display scores of both Redmi Note 3 and Redmi Note 4 with Helio X20. It has improved black levels and higher maximum brightness of 484 nits. These new tweaks have led to an excellent contrast ratio of 1503:1.

There's an Increased contrast mode, but that only changes the dynamic contrast on a per-image basis. It makes the photos look punchier and doesn't affect color accuracy.

Automatic brightness is available, but it doesn't boost the screen - 484nits is the highest you get.

When you drag the brightness slider all the way down, the Redmi Note 4 screen drops to just 2 nits. This is great for using the phone comfortably in the dark, and you can enable the Reading mode to reduce the amount of blue light in the evening. This mode can be set to trigger automatically for select apps - say, Amazon Kindle or other apps that involve a lot of screen time.

Display test 100% brightness
Black, cd/m2 White, cd/m2 Contrast ratio
Xiaomi Redmi Note 0.52 536 1016
Xiaomi Redmi Note 2 0.492 467 953
Xiaomi Redmi Note 3 (MediaTek) 0.42 403 953
Xiaomi Redmi Note 4 (X20) 0.38 439 1158
Xiaomi Redmi Note 4 (S625) 0.322 484 1503
Xiaomi Redmi 4 Prime 0.475 528 1112
Xiaomi Redmi 3s Prime 0.43 518 1205
Lenovo Vibe K5 Plus 0.44 441 998
Lenovo Moto M 0.3 425 1417
Xiaomi Mi 5s 0.51 660 1294
Xiaomi Mi 5s Plus 0.44 637 1448
Meizu M5 Note 0.614 463 754
Meizu m3 note 0.52 425 816
Meizu m3 note (int) 0.52 459 883
Meizu m3 max 0.46 449 976
Meizu M5s 0.426 407 955

Sunlight legibility is okay on the Redmi Note 4 Snapdragon Edition, and surprisingly much better than the Helio X20 model. It suffers from washed-out colors in the sun, but other than that you will be able to see what's happening on the screen quite well.

Sunlight contrast ratio

  • Samsung Galaxy S6 edge+
    4.615
  • Samsung Galaxy S7 edge
    4.439
  • OnePlus 3
    4.424
  • Samsung Galaxy S7
    4.376
  • HTC One A9
    4.274
  • Samsung Galaxy Note7
    4.247
  • Samsung Galaxy A3
    4.241
  • OnePlus 3T
    4.232
  • Google Pixel XL
    4.164
  • ZTE Axon 7
    4.154
  • Samsung Galaxy A7 (2017)
    4.124
  • Samsung Galaxy S6 edge
    4.124
  • Samsung Galaxy Note5
    4.09
  • Huawei Nexus 6P
    4.019
  • OnePlus X
    3.983
  • Vivo Xplay5 Elite
    3.983
  • Oppo R7s
    3.964
  • Apple iPhone 7
    3.964
  • Huawei P9 Plus
    3.956
  • Meizu Pro 6 Plus
    3.935
  • Lenovo Moto Z
    3.931
  • Samsung Galaxy A7 (2016)
    3.918
  • Samsung Galaxy C5
    3.911
  • Samsung Galaxy C7
    3.896
  • Samsung Galaxy A5
    3.895
  • Samsung Galaxy J7 outdoor
    3.879
  • Samsung Galaxy J2 outdoor
    3.873
  • Samsung Galaxy A8
    3.859
  • Samsung Galaxy A9 (2016)
    3.817
  • Motorola Moto X (2014)
    3.816
  • Samsung Galaxy A5 (2017)
    3.804
  • Samsung Galaxy J7 (2016) outdoor mode
    3.802
  • Xiaomi Redmi Pro
    3.798
  • LG V20 Max auto
    3.798
  • Sony Xperia XZ
    3.795
  • Samsung Galaxy A5 (2016)
    3.789
  • Apple iPhone 6s
    3.783
  • Meizu Pro 5
    3.781
  • Microsoft Lumia 650
    3.772
  • Samsung Galaxy J7 (2016)
    3.756
  • Oppo F1 Plus
    3.709
  • Vivo X5Pro
    3.706
  • Sony Xperia X Compact
    3.694
  • Samsung Galaxy A3 (2017)
    3.688
  • Apple iPhone SE
    3.681
  • Huawei Mate 9
    3.68
  • Samsung Galaxy A7
    3.679
  • Meizu PRO 6
    3.659
  • BlackBerry Priv
    3.645
  • Apple iPhone 7 Plus
    3.588
  • Apple iPhone 6s Plus
    3.53
  • Motorola Moto Z Play
    3.526
  • Samsung Galaxy J3 (2016)
    3.523
  • Samsung Galaxy J3 (2016) outdoor mode
    3.523
  • Acer Jade Primo
    3.521
  • Microsoft Lumia 950
    3.512
  • Oppo R7 Plus
    3.499
  • nubia Z11
    3.466
  • HTC U Ultra
    3.453
  • Samsung Galaxy J7
    3.422
  • Meizu MX5
    3.416
  • LG V20
    3.402
  • Huawei P10
    3.379
  • Oppo R9s
    3.352
  • Oppo R7
    3.32
  • Lenovo P2
    3.316
  • Xiaomi Mi 5s
    3.276
  • Samsung Galaxy J2
    3.235
  • Sony Xperia X Performance
    3.234
  • Xiaomi Mi Note 2
    3.228
  • Motorola Moto X Play
    3.222
  • Huawei Mate 9 Pro
    3.206
  • Huawei P9
    3.195
  • Lenovo Vibe Shot
    3.113
  • Motorola Moto X Force
    3.105
  • LG Nexus 5X
    3.092
  • Huawei Mate S
    3.073
  • Microsoft Lumia 640 XL
    3.065
  • Sony Xperia X
    2.989
  • Huawei Mate 8
    2.949
  • Xiaomi Redmi 3S
    2.913
  • Sony Xperia XA Ultra
    2.906
  • LG G5
    2.905
  • HTC One S
    2.901
  • Xiaomi Redmi 3s Prime
    2.893
  • Xiaomi Mi 5s Plus
    2.884
  • Sony Xperia Z5
    2.876
  • Microsoft Lumia 550
    2.851
  • Lenovo Moto M
    2.813
  • Xiaomi Redmi 3 Pro
    2.803
  • Sony Xperia Z5 compact
    2.784
  • Meizu MX6
    2.751
  • LG V10
    2.744
  • Xiaomi Redmi 3
    2.735
  • Xiaomi Redmi Note 4 (S625)
    2.714
  • Meizu M5
    2.71
  • Sony Xperia M5
    2.69
  • Huawei P9 Lite
    2.679
  • Xiaomi Redmi 4 Prime
    2.679
  • Vivo V3Max
    2.659
  • Xiaomi Mi Mix
    2.658
  • Xiaomi Mi 4i
    2.641
  • Sony Xperia XA
    2.609
  • Motorola Moto G4 Plus
    2.582
  • Motorola Moto G4 Plus (max auto)
    2.582
  • Meizu M5s
    2.58
  • Xiaomi Mi 4c
    2.574
  • LeEco Le Max 2
    2.567
  • Microsoft Lumia 640
    2.563
  • Asus Zenfone 3 ZE552KL
    2.563
  • Lenovo Moto G4
    2.544
  • Lenovo K6 Note
    2.544
  • Oppo F1
    2.528
  • Sony Xperia Z5 Premium
    2.525
  • Huawei Honor 7 Lite / Honor 5c
    2.506
  • Sony Xperia M4 Aqua
    2.503
  • Oppo F1s
    2.481
  • Motorola Moto G
    2.477
  • Lenovo Vibe K5 Plus
    2.473
  • Huawei G8
    2.471
  • Huawei nova
    2.467
  • Sony Xperia Z
    2.462
  • Lenovo Vibe K5
    2.459
  • Meizu m3 max
    2.447
  • HTC 10 evo
    2.407
  • Huawei Honor 7
    2.406
  • Sony Xperia E5
    2.386
  • ZUK Z1 by Lenovo
    2.382
  • Samsung Galaxy J5 (2016)
    2.378
  • HTC 10
    2.378
  • vivo V5 Plus
    2.371
  • Meizu m1 note
    2.362
  • Huawei nova plus
    2.329
  • HTC One E9+
    2.305
  • Alcatel One Touch Hero
    2.272
  • Lenovo Vibe K4 Note
    2.254
  • Sony Xperia C5 Ultra
    2.253
  • Xiaomi Redmi Note 3 (MediaTek)
    2.249
  • Sony Xperia C4 Dual
    2.235
  • Xiaomi Mi Note
    2.234
  • Motorola Moto G (2014)
    2.233
  • Huawei P8
    2.196
  • Meizu M5 Note
    2.189
  • Huawei Honor 6
    2.169
  • Xiaomi Redmi Note 2
    2.166
  • OnePlus Two
    2.165
  • HTC One X
    2.158
  • LG Aka
    2.145
  • Xiaomi Redmi Note 4 (X20)
    2.145
  • Archos 50 Diamond
    2.134
  • Xiaomi Redmi Note
    2.119
  • Acer Liquid X2
    2.084
  • Huawei P8lite
    2.078
  • vivo V5
    2.059
  • Moto G 3rd gen max manual
    2.026
  • Xiaomi Mi Max
    1.996
  • Sony Xperia E4g
    1.972
  • OnePlus One
    1.961
  • Meizu m3 note
    1.923
  • BlackBerry Leap
    1.892
  • Meizu m2 note
    1.892
  • ZTE Nubia Z9 mini
    1.759
  • Sony Xperia U
    1.758
  • Asus Zenfone Selfie
    1.68
  • Motorola Moto E (2nd Gen)
    1.675
  • ZTE Nubia Z9
    1.659
  • Jolla Jolla
    1.605
  • Motorola Moto E
    1.545
  • Sony Xperia M
    1.473
  • Sony Xperia L
    1.351
  • HTC Desire C
    1.3
  • Sony Xperia C
    1.283
  • Meizu MX
    1.221
  • Sony Xperia E
    1.215

The colors themselves are fairly accurate by default with an average deltaE of 5.2 and a maximum of 9.8. The whites and grays have a bluish tint, but other than that, the default Auto mode offers a good color presentation.

We tried setting the white balance slider and found that the Standard screen mode is the most accurate. The average deltaE drops to a very good 3.6 and the maximum to 6.8. This mode introduces a slight yellow tint, though, and shifts the white point towards warmer tones.

Battery life

The Xiaomi Redmi Note 4 has a 4,100mAh battery, the same as the Helio model, but the energy efficient Snapdragon 625 should help it achieve a better battery endurance. The Note 4 supports regular 5V/2A charging, which restores 25% of the battery in 30 minutes of charging, 95% in 2 hours, and 100% in 3h.

Indeed, the Snapdragon 625 chip lived up to our expectations. Combined with the large battery, the Redmi Note 4 easily scored one of the best results in our battery test with a 119-hour Endurance rating. It did a fabulous job in all tested scenarios - video, calls, web browsing and even stand-by performance.

The rating of 119 hours means you can rely on the Redmi Note 4 to last that long if you do an hour of 3G calls, web browsing, and video playback each day.

Xiaomi Redmi Note 4 Snapdragon review

Our endurance rating denotes how long a single battery charge will last you if you use the Redmi Note 4 for an hour each of telephony, web browsing, and video playback daily. We've established this usage pattern so 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-gritties. You can also 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.

Connectivity

The Xiaomi Redmi Note 4 can be a dual-SIM phone if you'd like it to be - it really depends on whether you need extra storage.

If you do have two SIMs, a toggle in the settings selects which card will provide data over LTE. VoLTE is supported, soon it will replace 2G voice in busy city centers as it supports many more calls per cell.

Locally, you get fast Wi-Fi a/b/g/n/ac on 2.4GHz and 5GHz. Wi-Fi screen sharing is available too, also Bluetooth 4.1, but no NFC.

The IR blaster gives the Redmi Note 4 control over your equipment at home - including things like cameras (some DSLRs have IR remotes), fans (Xiaomi makes a smart fan, believe it or not) and others.

Finally, the Redmi Note 4 comes with FM radio, but it lacks RDS support.

Reader comments

  • kumokai

brought march 2017 batt still good and everything still running good for 4 years one of my longest phone. youtube all the way still last me 4 hours ++. Just that the power button and volumn button have become not so sensitive. other than tht fxxcing...

  • inday

this phone is very nice and affordable

There is a reson for not having fast charging. Any battery suffer from a fast charge over time.