Realme U1 review

Display

The Realme U1 packs the same 6.3" IPS LCD notched screen we saw on the Realme 2 Pro. It has a trendy dewdrop-like cutout for the selfie camera and a 1080p (1,080 x 2,340) resolution resulting into decently sharp 409ppi density.

The Realme 2 Pro used the Oppo F9 screen - they are both BBK owned after all, so sharing assets is expected. And the U1 also comes with the same panel, which is great news.

The 6.3" display offers very deep blacks and high brightness at 520 nits, resulting in the excellent contrast ratio of 1800:1 - similar to Oppo F9's and Realme 2 Pro's.

The minimum brightness level of 3.3 nits is quite nice to have too, meaning you can comfortably use it in complete darkness.

The Realme U1 did average in our sunlight legibility test, which in real-world terms means the handset remains usable outdoors at the expense of contrast and washed out colors..

Sunlight contrast ratio

• Apple iPhone XS
  5.171
• Apple iPhone X
  5.013
• Huawei Mate 20 Pro
  4.965
• OnePlus 5T
  4.789
• Samsung Galaxy S8
  4.768
• Samsung Galaxy S8+
  4.658
• Samsung Galaxy S9
  4.63
• Samsung Galaxy S6 edge+
  4.615
• Samsung Galaxy S9+
  4.537
• Samsung Galaxy Note9
  4.531
• Apple iPhone XS Max
  4.516
• Sony Xperia XZ3
  4.502
• Motorola Moto Z2 Play
  4.459
• Oppo R11
  4.454
• Samsung Galaxy S7 edge
  4.439
• OnePlus 3
  4.424
• Samsung Galaxy S7
  4.376
• Google Pixel 3
  4.35
• OnePlus 6
  4.321
• HTC One A9
  4.274
• LG V40 ThinQ
  4.256
• Oppo R15 Pro
  4.251
• Samsung Galaxy Note7
  4.247
• Samsung Galaxy A3
  4.241
• Nokia 8
  4.239
• Google Pixel 2 XL (pre-update)
  4.234
• OnePlus 3T
  4.232
• Google Pixel XL
  4.164
• ZTE Axon 7
  4.154
• Samsung Galaxy Note8
  4.148
• Meizu Pro 7 Plus
  4.147
• OnePlus 6T
  4.138
• Samsung Galaxy S6 edge
  4.124
• Samsung Galaxy A7 (2017)
  4.124
• vivo V11
  4.113
• Huawei Mate 10 Pro (normal)
  4.096
• Samsung Galaxy Note5
  4.09
• Huawei P20 Pro
  4.087
• Xiaomi Mi 8
  4.086
• Meizu 15
  4.082
• Nokia 6 (2018)
  4.052
• Google Pixel 2 (pre-update)
  4.023
• LG V30
  4.022
• Huawei Nexus 6P
  4.019
• vivo NEX S
  4.012
• Samsung Galaxy J7 Pro
  3.998
• OnePlus X
  3.983
• Vivo Xplay5 Elite
  3.983
• LG G7 ThinQ (outdoor)
  3.978
• Oppo R7s
  3.964
• Apple iPhone 7
  3.964
• Apple iPhone 8 (True Tone)
  3.957
• Huawei P9 Plus
  3.956
• Oppo Find X
  3.954
• Meizu Pro 6 Plus
  3.935
• Lenovo Moto Z
  3.931
• Samsung Galaxy A7 (2016)
  3.918
• OnePlus 5
  3.914
• Samsung Galaxy C5
  3.911
• Xiaomi Mi 8 SE
  3.901
• Samsung Galaxy C7
  3.896
• Samsung Galaxy A5
  3.895
• Samsung Galaxy J7 outdoor
  3.879
• Samsung Galaxy J2 outdoor
  3.873
• Motorola Moto G6 Plus
  3.865
• Samsung Galaxy A8
  3.859
• Samsung Galaxy A8 (2018)
  3.842
• Apple iPhone 6
  3.838
• Microsoft Lumia 950XL
  3.837
• Samsung Galaxy A6+ (2018)
  3.834
• Sony Xperia XZs
  3.818
• Samsung Galaxy A9 (2016)
  3.817
• Motorola Moto X (2014)
  3.816
• Samsung Galaxy J7 (2017)
  3.812
• 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
• Xiaomi Mi 6
  3.767
• Sony Xperia XZ1
  3.765
• Samsung Galaxy J7 (2016)
  3.756
• Nokia 8 Sirocco
  3.745
• Sony Xperia XZ1 Compact
  3.729
• Apple iPhone 8 Plus (True Tone)
  3.725
• Oppo F1 Plus
  3.709
• Vivo X5Pro
  3.706
• Samsung Galaxy A3 (2017)
  3.688
• Huawei P20
  3.683
• Apple iPhone SE
  3.681
• Huawei Mate 9
  3.68
• Samsung Galaxy A7
  3.679
• Sony Xperia XZ2 Compact
  3.675
• Meizu PRO 6
  3.659
• BlackBerry Priv
  3.645
• Sony Xperia XA1 Ultra
  3.597
• Apple iPhone 7 Plus
  3.588
• Sony Xperia XZ2
  3.58
• LG G6
  3.556
• 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
• Nokia 7 plus
  3.479
• nubia Z11
  3.466
• Huawei P10 Plus
  3.456
• HTC U Ultra
  3.453
• Motorola Moto G6
  3.448
• Sony Xperia XA2 Ultra
  3.445
• Sony Xperia XA2 Plus
  3.445
• Samsung Galaxy J7
  3.422
• Motorola Moto G6 Play
  3.419
• Meizu MX5
  3.416
• LG V20
  3.402
• Samsung Galaxy A6 (2018)
  3.397
• Xiaomi Redmi Note 5 AI Dual Camera
  3.393
• LG G7 ThinQ
  3.39
• Huawei P10
  3.379
• Samsung Galaxy J5 (2016)
  3.378
• Oppo R9s
  3.352
• Honor Play
  3.349
• Honor 8 Pro
  3.341
• Oppo F7
  3.333
• Oppo R7
  3.32
• Lenovo P2
  3.316
• Archos Diamond Omega
  3.305
• Honor 9
  3.289
• Xiaomi Mi 5s
  3.276
• Nokia 5
  3.261
• Nokia 6 (Chinese version)
  3.244
• Xiaomi Mi 5
  3.24
• Nokia 6 (Global version)
  3.238
• Samsung Galaxy J2
  3.235
• Realme 2 Pro
  3.235
• Sony Xperia X Performance
  3.234
• Xiaomi Mi Note 2
  3.228
• Motorola Moto X Play
  3.222
• Oppo F3 Plus
  3.218
• BlackBerry KEY2
  3.212
• Huawei Mate 9 Pro
  3.206
• Huawei P9
  3.195
• Xiaomi Mi Mix 2
  3.19
• ZTE Nubia Z17
  3.159
• Oppo R11s
  3.153
• Lenovo Vibe Shot
  3.113
• Honor 8X
  3.113
• HTC U11 Life
  3.108
• Motorola Moto X Force
  3.105
• LG Nexus 5X
  3.092
• HTC U11
  3.089
• Xiaomi Mi A2 Lite
  3.087
• HTC U12+
  3.085
• Xiaomi Redmi S2 (Y2)
  3.077
• Huawei Mate S
  3.073
• Oppo F9
  3.069
• Microsoft Lumia 640 XL
  3.065
• Xiaomi Mi Max 3
  3.061
• Xiaomi Pocophone F1
  3.059
• Huawei Mate 20
  3.052
• Huawei Mate 20 Lite
  3.051
• Motorola One (P30 Play)
  3.026
• Apple iPhone 6 Plus
  3.023
• Asus Zenfone 4 ZE554KL
  3.019
• Sony Xperia XA1
  3.012
• Motorola Moto X4
  3.012
• Realme 2
  3.006
• Sony Xperia L1
  2.994
• Sony Xperia X
  2.989
• LG Q6
  2.987
• Huawei P10 Lite
  2.974
• Samsung Galaxy Note
  2.97
• Xiaomi Redmi Note 6 Pro
  2.966
• Huawei P20 Lite
  2.952
• Xiaomi Redmi 5
  2.951
• Sony Xperia Z1
  2.95
• Huawei Mate 8
  2.949
• Sony Xperia XA2
  2.938
• Realme 1
  2.932
• Razer Phone 2
  2.932
• Xiaomi Redmi 4
  2.92
• Xiaomi Redmi 3S
  2.913
• Xiaomi Redmi 5 Plus
  2.913
• Sony Xperia XA Ultra
  2.906
• LG G5
  2.905
• Huawei Honor View 10
  2.896
• Xiaomi Redmi 3s Prime
  2.893
• Xiaomi Mi 5s Plus
  2.884
• Sony Xperia XZ Premium (sRGB)
  2.877
• Sony Xperia XZ Premium
  2.877
• Sony Xperia Z5
  2.876
• Nokia 3
  2.871
• Sony Xperia XZ2 Premium
  2.867
• Xiaomi Mi 8 Lite
  2.862
• Microsoft Lumia 550
  2.851
• Nokia 3.1
  2.837
• Realme U1
  2.815
• Lenovo Moto M
  2.813
• Nokia 7.1
  2.804
• Xiaomi Redmi 3 Pro
  2.803
• Sony Xperia Z5 compact
  2.784
• Honor 10 (Vivid)
  2.757
• Nokia 2
  2.752
• Meizu MX6
  2.751
• LG V10
  2.744
• Huawei Mate 10 (normal)
  2.742
• Motorola Moto G5S Plus
  2.737
• Xiaomi Redmi 3
  2.735
• Huawei Honor 7X
  2.734
• Xiaomi Redmi Note 4 (S625)
  2.714
• Meizu M5
  2.71
• Xiaomi Mi A2
  2.696
• Sony Xperia M5
  2.69
• Xiaomi Mi A1
  2.689
• Huawei P9 Lite
  2.679
• Xiaomi Redmi 4 Prime
  2.679
• vivo V7+
  2.671
• 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
• Huawei P Smart
  2.563
• Xiaomi Mi Max 2
  2.561
• Sony Xperia Z5 Premium
  2.525
• Huawei Honor 7 Lite / Honor 5c
  2.506
• Sony Xperia M4 Aqua
  2.503
• BlackBerry Motion
  2.494
• 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
• Xiaomi Mi 4
  2.424
• Xiaomi Mi 5X (Auto)
  2.417
• Huawei nova plus
  2.329
• Razer Phone
  2.328
• HTC One E9+
  2.305
• Alcatel One Touch Hero
  2.272
• Apple iPhone 4S
  2.269
• Sony Xperia L2
  2.266
• Lenovo Vibe K4 Note
  2.254
• Sony Xperia C5 Ultra
  2.253
• HTC U11+ (EU)
  2.253
• 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
• Xiaomi Mi 4S
  2.095

The color rendering is average at best - the screen offers a reasonably accurate color reproduction and we measured an average DeltaE of 6.9 in the sRGB color space. The representation of the whites and the grays is way colder than it should be (around DeltaE of 12).

If you opt for the Warm screen color temperature from Settings, the blue tinge is suppressed and the average DeltaE drops to 4.5 - an excellent result for the class.

Battery life

The Realme U1 is powered by a 3,500 mAh battery - the same capacity as the one within the Realme 2 Pro. It supports regular 5V/2A charging, which restores about 30% of a depleted battery in 30 minutes. Not exactly fast, but as fast as you can expect in this price segment.

The Realme U1 scored an excellent result in our battery test with a 93-hour Endurance rating. It did a great job in all tested scenarios - video playback, calls, web browsing and even stand-by performance.

Our battery tests were automated thanks to SmartViser, using its viSer App. The endurance rating above denotes how long a single battery charge will last you if you use the Realme U1 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.

Speaker

The Realme U1 has a single bottom-firing speaker at its disposal, just like all other Realme phones. And it can put on a good show, even in the budget segment. The speaker is tuned to focus on the mid-tones, but no matter the music genre you are playing, it sounds good and is nicely loud at that.

Audio quality

The Realme U1 has great loudness when connected to an active external amplifier and it stayed just above average when we hooked up our standard testing headset. Both great achievements for a smartphone at that price point.

The clarity of its output was great in the first testing case, but sadly the headphnones caused quite a lot of damage. An above average hike in stereo crosstalk, some intermodulation distortion, and a somewhat shakier frequency response add up to decidedly mediocre showing as far as accuracy is concerned.

Realme U1 frequency response

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