Courte critique du smartphone LG K9
Appareil photo secondaire: 5 MPix
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Comparaison des tailles
Networking | |
iperf3 Client (receive) TCP 1 m 4M x10 | |
Average of class Smartphone (5.9 - 1414, n=640) | |
Nokia 2 | |
LG K8 2017 | |
Huawei Y6 2018 | |
Honor 7A | |
Nomu M6 | |
LG K9 | |
iperf3 Client (transmit) TCP 1 m 4M x10 | |
Average of class Smartphone (9.4 - 1599, n=640) | |
Nokia 2 | |
Huawei Y6 2018 | |
LG K8 2017 | |
LG K9 | |
Honor 7A | |
Nomu M6 |
|
Homogénéité de la luminosité: 93 %
Valeur mesurée au centre, sur batterie: 282 cd/m²
Contraste: 486:1 (Valeurs des noirs: 0.58 cd/m²)
ΔE Color 5.6 | 0.6-29.43 Ø5.7
ΔE Greyscale 4.6 | 0.64-98 Ø5.9
88.3% sRGB (Calman 2D)
Gamma: 2.29
LG K9 IPS, 1280x720, 5.00 | Nokia 2 IPS, 1280x720, 5.00 | Nomu M6 IPS, 1280x720, 5.00 | Honor 7A IPS, 1440x720, 5.70 | Huawei Y6 2018 IPS, 1440x720, 5.70 | LG K8 2017 IPS, 1280x720, 5.00 | |
---|---|---|---|---|---|---|
Screen | 26% | 60% | 62% | 35% | 2% | |
Brightness middle | 282 | 527 87% | 610 116% | 417 48% | 483 71% | 358 27% |
Brightness | 271 | 503 86% | 578 113% | 395 46% | 460 70% | 351 30% |
Brightness Distribution | 93 | 91 -2% | 90 -3% | 88 -5% | 88 -5% | 93 0% |
Black Level * | 0.58 | 0.68 -17% | 0.31 47% | 0.18 69% | 0.4 31% | 0.49 16% |
Contrast | 486 | 775 59% | 1968 305% | 2317 377% | 1208 149% | 731 50% |
Colorchecker DeltaE2000 * | 5.6 | 5.3 5% | 6.8 -21% | 6.46 -15% | 5.8 -4% | 7.1 -27% |
Colorchecker DeltaE2000 max. * | 10.5 | 9.2 12% | 13.4 -28% | 10.72 -2% | 12.6 -20% | 14.9 -42% |
Greyscale DeltaE2000 * | 4.6 | 5.8 -26% | 6.8 -48% | 5.8 -26% | 5 -9% | 6.5 -41% |
Gamma | 2.29 96% | 2.12 104% | 2.08 106% | 2.423 91% | 2.6 85% | 2.12 104% |
CCT | 7333 89% | 7894 82% | 8003 81% | 7839 83% | 7709 84% | 8166 80% |
Colorchecker DeltaE2000 calibrated * | 4.42 |
* ... Moindre est la valeur, meilleures sont les performances
Scintillement / MLI (Modulation de largeur d'impulsion)
Scintillement / MLI (Modulation de largeur d'impulsion) non décelé | |||
En comparaison, 51 % des appareils testés n'emploient pas MDI pour assombrir leur écran. Nous avons relevé une moyenne à 9725 (minimum : 5 - maximum : 142900) Hz dans le cas où une MDI était active. |
Temps de réponse de l'écran
↔ Temps de réponse noir à blanc | ||
---|---|---|
38.8 ms ... hausse ↗ et chute ↘ combinées | ↗ 26.8 ms hausse | |
↘ 12 ms chute | ||
L'écran souffre de latences très élevées, à éviter pour le jeu. En comparaison, tous les appareils testés affichent entre 0.8 (minimum) et 240 (maximum) ms. » 96 % des appareils testés affichent de meilleures performances. Cela signifie que les latences relevées sont moins bonnes que la moyenne (24.4 ms) de tous les appareils testés. | ||
↔ Temps de réponse gris 50% à gris 80% | ||
51.6 ms ... hausse ↗ et chute ↘ combinées | ↗ 26 ms hausse | |
↘ 25.6 ms chute | ||
L'écran souffre de latences très élevées, à éviter pour le jeu. En comparaison, tous les appareils testés affichent entre 0.8 (minimum) et 636 (maximum) ms. » 85 % des appareils testés affichent de meilleures performances. Cela signifie que les latences relevées sont moins bonnes que la moyenne (38.7 ms) de tous les appareils testés. |
AnTuTu v6 - Total Score (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (19230 - 25825, n=6) | |
Average of class Smartphone (5600 - 293444, n=490) |
AnTuTu v7 - Total Score (Classer selon les valeurs) | |
LG K9 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 | |
Average of class Smartphone (17073 - 462516, n=297) |
PCMark for Android | |
Work 2.0 performance score (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (2152 - 2399, n=3) | |
Average of class Smartphone (82 - 15299, n=564) | |
Work performance score (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (2882 - 3741, n=6) | |
Average of class Smartphone (1077 - 19989, n=714) |
BaseMark OS II | |
Web (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (9 - 621, n=8) | |
Average of class Smartphone (7 - 2169, n=764) | |
Graphics (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (144 - 260, n=8) | |
Average of class Smartphone (18 - 16996, n=764) | |
Memory (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (233 - 685, n=8) | |
Average of class Smartphone (21 - 8874, n=764) | |
System (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (529 - 899, n=8) | |
Average of class Smartphone (369 - 14189, n=764) | |
Overall (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (1 - 477, n=8) | |
Average of class Smartphone (1 - 6402, n=764) |
Geekbench 4.1 - 4.4 | |
Compute RenderScript Score (Classer selon les valeurs) | |
LG K9 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 | |
Average of class Smartphone (663 - 21070, n=364) | |
64 Bit Multi-Core Score (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (944 - 1135, n=3) | |
Average of class Smartphone (883 - 13589, n=431) | |
64 Bit Single-Core Score (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (390 - 437, n=3) | |
Average of class Smartphone (390 - 4965, n=431) |
GFXBench (DX / GLBenchmark) 2.7 | |
1920x1080 T-Rex HD Offscreen C24Z16 (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (3 - 5.6, n=8) | |
Average of class Smartphone (0.5 - 322, n=834) | |
T-Rex HD Onscreen C24Z16 (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (5.24 - 21, n=8) | |
Average of class Smartphone (1 - 142, n=843) |
GFXBench 3.0 | |
off screen Manhattan Offscreen OGL (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (1 - 1.9, n=7) | |
Average of class Smartphone (0.8 - 180, n=739) | |
on screen Manhattan Onscreen OGL (Classer selon les valeurs) | |
LG K9 | |
Nokia 2 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average Qualcomm Snapdragon 210 MSM8909 (4 - 16, n=7) | |
Average of class Smartphone (1.2 - 117, n=747) |
GFXBench 3.1 | |
off screen Manhattan ES 3.1 Offscreen (Classer selon les valeurs) | |
LG K9 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average of class Smartphone (0.87 - 117, n=602) | |
on screen Manhattan ES 3.1 Onscreen (Classer selon les valeurs) | |
LG K9 | |
Nomu M6 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average of class Smartphone (1.2 - 110, n=604) |
GFXBench | |
off screen Car Chase Offscreen (Classer selon les valeurs) | |
LG K9 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average of class Smartphone (0.6 - 75, n=527) | |
on screen Car Chase Onscreen (Classer selon les valeurs) | |
LG K9 | |
Honor 7A | |
Huawei Y6 2018 | |
LG K8 2017 | |
Average of class Smartphone (1.1 - 60, n=531) |
JetStream 1.1 - Total Score | |
Average of class Smartphone (10 - 375, n=659) | |
Nomu M6 (Chrome 65) | |
Huawei Y6 2018 (Chrome 66) | |
Honor 7A (Chrome 67) | |
LG K8 2017 (Chrome 57) | |
Average Qualcomm Snapdragon 210 MSM8909 (10 - 13, n=6) | |
Nokia 2 (Chrome 65) | |
LG K9 (Chrome 67) |
Octane V2 - Total Score | |
Average of class Smartphone (894 - 58632, n=829) | |
Honor 7A (Chrome 67) | |
Nomu M6 (Chrome 65) | |
LG K8 2017 (Chrome 57) | |
Huawei Y6 2018 (Chrome 66) | |
LG K9 (Chrome 67) | |
Nokia 2 (Chrome 65) | |
Average Qualcomm Snapdragon 210 MSM8909 (1506 - 2170, n=8) |
Mozilla Kraken 1.1 - Total Score | |
Average Qualcomm Snapdragon 210 MSM8909 (16784 - 33491, n=8) | |
Nokia 2 (Chrome 65) | |
LG K9 (Chrome 67) | |
Huawei Y6 2018 (Chrome 66) | |
Honor 7A (Chrome 67) | |
Nomu M6 | |
LG K8 2017 (Chrome 57) | |
Average of class Smartphone (460 - 59466, n=855) |
WebXPRT 2015 - Overall Score | |
Average of class Smartphone (165 - 362, n=347) | |
Huawei Y6 2018 (Chrome 66) | |
Average Qualcomm Snapdragon 210 MSM8909 (34 - 45, n=3) |
* ... Moindre est la valeur, meilleures sont les performances
LG K9 | Nokia 2 | Nomu M6 | Honor 7A | Huawei Y6 2018 | LG K8 2017 | Average 16 GB eMMC Flash | Average of class Smartphone | |
---|---|---|---|---|---|---|---|---|
AndroBench 3-5 | 6% | 4% | 63% | 59% | 73% | 4% | 188% | |
Sequential Write 256KB SDCard | 59.36 (Toshiba Exceria Pro M501) | 61.18 (Toshiba Exceria Pro M501) 3% | 18.72 (Toshiba Exceria Pro M501) -68% | 65.4 (Toshiba Exceria Pro M501) 10% | 64 (Toshiba Exceria Pro M501) 8% | 52.23 (Toshiba Exceria Pro M401) -12% | 40 (6.38 - 65.8, n=136) -33% | 51.6 (1.7 - 87.1, n=563) -13% |
Sequential Read 256KB SDCard | 79.33 (Toshiba Exceria Pro M501) | 81.93 (Toshiba Exceria Pro M501) 3% | 28.69 (Toshiba Exceria Pro M501) -64% | 84.9 (Toshiba Exceria Pro M501) 7% | 84.9 (Toshiba Exceria Pro M501) 7% | 78.55 (Toshiba Exceria Pro M401) -1% | 59.2 (8.1 - 87.7, n=136) -25% | 69.5 (8.1 - 96.5, n=563) -12% |
Random Write 4KB | 7.47 | 8.1 8% | 11.38 52% | 9.4 26% | 9 20% | 12.5 67% | 8.09 (0.49 - 44.9, n=255) 8% | 40.3 (0.14 - 319, n=934) 439% |
Random Read 4KB | 11.38 | 17.44 53% | 12.78 12% | 39.2 244% | 38.8 241% | 41.6 266% | 21.7 (2.49 - 62.1, n=255) 91% | 63.1 (1.59 - 325, n=934) 454% |
Sequential Write 256KB | 75.19 | 50.77 -32% | 91 21% | 72.5 -4% | 65.6 -13% | 84.6 13% | 43.1 (8.74 - 106, n=255) -43% | 139 (2.99 - 1321, n=934) 85% |
Sequential Read 256KB | 131.94 | 131.15 -1% | 223 69% | 254.8 93% | 254.3 93% | 270.8 105% | 165 (9.66 - 294, n=255) 25% | 363 (12.1 - 2037, n=934) 175% |
(+) The maximum temperature on the upper side is 37 °C / 99 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 36.4 °C / 98 F, compared to the average of 33.8 °C / 93 F
(+) In idle usage, the average temperature for the upper side is 30.9 °C / 88 F, compared to the device average of 32.9 °C / 91 F.
LG K9 audio analysis
(+) | speakers can play relatively loud (86 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 45.3% lower than median
(+) | bass is linear (5.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 13.2% lower than median
(±) | linearity of mids is average (13% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.7% higher than median
(+) | highs are linear (3.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(-) | overall sound is not linear (36.7% difference to median)
Compared to same class
» 97% of all tested devices in this class were better, 1% similar, 2% worse
» The best had a delta of 13%, average was 24%, worst was 65%
Compared to all devices tested
» 97% of all tested devices were better, 1% similar, 2% worse
» The best had a delta of 3%, average was 21%, worst was 65%
Nokia 2 audio analysis
(+) | speakers can play relatively loud (84.9 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 35.6% lower than median
(±) | linearity of bass is average (8.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 8.9% higher than median
(±) | linearity of mids is average (9% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 8% higher than median
(±) | linearity of highs is average (7.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(-) | overall sound is not linear (30.9% difference to median)
Compared to same class
» 87% of all tested devices in this class were better, 5% similar, 7% worse
» The best had a delta of 13%, average was 24%, worst was 65%
Compared to all devices tested
» 91% of all tested devices were better, 3% similar, 6% worse
» The best had a delta of 3%, average was 21%, worst was 65%
Éteint/en veille | ![]() ![]() |
Au repos | ![]() ![]() ![]() |
Fortement sollicité |
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Légende:
min: ![]() ![]() ![]() |
LG K9 2500 mAh | Nokia 2 4100 mAh | Nomu M6 3000 mAh | Honor 7A 3000 mAh | Huawei Y6 2018 3000 mAh | LG K8 2017 2500 mAh | Average Qualcomm Snapdragon 210 MSM8909 | Average of class Smartphone | |
---|---|---|---|---|---|---|---|---|
Power Consumption | 23% | 18% | -28% | -61% | 19% | 4% | -7% | |
Idle Minimum * | 0.54 | 0.55 -2% | 0.74 -37% | 1.3 -141% | 1.7 -215% | 0.65 -20% | 0.765 (0.4 - 1.58, n=8) -42% | 0.89 (0.2 - 3.4, n=925) -65% |
Idle Average * | 2.09 | 1.02 51% | 1.49 29% | 1.6 23% | 2.5 -20% | 1.6 23% | 1.904 (0.9 - 2.69, n=8) 9% | 1.758 (0.6 - 6.2, n=924) 16% |
Idle Maximum * | 2.2 | 1.09 50% | 1.51 31% | 2.9 -32% | 3.2 -45% | 1.62 26% | 2.05 (1.25 - 2.93, n=8) 7% | 2.04 (0.74 - 6.6, n=925) 7% |
Load Average * | 4.93 | 4.48 9% | 2.89 41% | 3.7 25% | 5.2 -5% | 2.97 40% | 3.69 (2.2 - 5.22, n=8) 25% | 4.13 (0.8 - 10.8, n=919) 16% |
Load Maximum * | 5.68 | 5.32 6% | 4.33 24% | 6.4 -13% | 6.8 -20% | 4.34 24% | 4.4 (2.36 - 5.68, n=8) 23% | 6.13 (1.2 - 14.2, n=919) -8% |
* ... Moindre est la valeur, meilleures sont les performances
LG K9 2500 mAh | Nokia 2 4100 mAh | Nomu M6 3000 mAh | Honor 7A 3000 mAh | Huawei Y6 2018 3000 mAh | LG K8 2017 2500 mAh | |
---|---|---|---|---|---|---|
Autonomie de la batterie | ||||||
WiFi v1.3 | 351 | 840 139% | 623 77% | 657 87% | 643 83% | 594 69% |
Points positifs
Points négatifs
Dans nos tests, le LG K9 ne montre presque aucun progrès par rapport à son prédécesseur, le LG K8 (2017), et il est très souvent surpassé par ses concurrents. Les avantages du K9 reposent sur sa batterie amovible et sa conception simple et robuste. Ces caractéristiques en font un bon appareil pour des activités qui poussent à laisser notre appareil plus cher à la maison.
Le LG K9 est un bon appareil secondaire, peu cher et pour les tâches simples, pour ceux qui n’ont pas besoin d’un système performant.
Malgré ses faibles performances, le K9 peut être utilisé pour les tâches les plus élémentaires. Des applis comme WhatsApp tournent sans souci, et l’appareil est suffisant pour des photos occasionnelles dans de bonnes conditions d’éclairage. Les clients intéressés qui veulent un appareil bon marché et qui ne sont pas exigeants sur les performances peuvent jeter un œil au LG K9.
L’intégralité de cette critique est disponible en anglais en suivant ce lien.
LG K9 - 08/04/2018 v6(old)
Mike Wobker