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Which is better, LG Q9 (2019) 64GB or vivo Y51 (2015) 16GB? We compared their features and specs in detail

Created date: 2019-03-19 04:16:14, Updated date: 2020-04-16 17:33:15

LG Q9 (2019) 64GBvivo Y51 (2015) 16GB
LG Q9 (2019) 64GBvivo Y51 (2015) 16GB

Are you having trouble comparing the differences in features and performance of the "LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", or unsure about their differences in ease-of-use, and wondering which to buy? We did a deep-dive comparison of the features, specs, and capabilities of these two smartphone, and provided our rating of which one was a better buy.

LG Q9 (2019) 64GBvivo Y51 (2015) 16GB
LG Q9 (2019) 64GB

vivo Y51 (2015) 16GB

General rating:

69.1/100

(The 3477th of all smartphones)

46/100

(The 1609th of all smartphones)

Holding comfort
68/100
69/100
Weight
66/100
67/100
Screen size
90/100
74/100
Display quality
89/100
36/100
Battery life
65/100
55/100
Processing power
57/100
33/100
Memory capacity
70/100
50/100
Storage capacity
67/100
50/100
Rear camera performance
68/100
50/100
Front camera performance
58/100
50/100

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", performance comparison

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB" size comparison. Which to choose?

The size of the body has a big influence on the ease of carrying and one-handed operation. The narrower the width, the easier it is to firmly grasp and hold, but you also have to take into account the device's thickness. Also, if the width and height are smaller, its easier to operate one-handed since its easier to extend your fingers. On the contrary, if the width and height are large, it's difficult to fit in your pocket and is bulky even when put in a bag, and portability is impaired.

The "LG Q9 (2019) 64GB" has a width of 71.9mm, a length of 153.2mm, and a thickness of 7.9mm. Also, the "vivo Y51 (2015) 16GB" has a width of 71.7mm, a length of 143.8mm, and a thickness of 7.5mm.

Comparing the width and thickness of the body, there isn't much difference between the "LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB" in terms of size. For that reason, the ease of gripping and carrying the devices in one hand is about the same for both. Therefore it's better to compare them in terms of performance and functionality.

Comparing the width and thickness of the body, there isn't a large difference in size between the "LG Q9 (2019) 64GB" and the "vivo Y51 (2015) 16GB". For that reason their one-handed operability, portability, and bulkiness when carried is about the same. That's why I think it's better to compare them in terms of other aspects of performance and functionality.

Comparing the overall size of the two devices, there isn't a big difference in size between the "LG Q9 (2019) 64GB" and the "vivo Y51 (2015) 16GB". For that reason the ease of carrying and use with one hand is about the same for both. That's why it is better to compare the two in terms of other aspects of performance and functionality.

ScoreDimensions (width x height x thickness)
LG Q9 (2019) 64GB68/10071.9mm x 153.2mm x 7.9mm
vivo Y51 (2015) 16GB69/10071.7mm x 143.8mm x 7.5mm

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", which is more comfortable to hold? Weight comparison

The weight of the device affects hand fatigue and the burden placed upon the wrist. The lighter it is, the longer you'll be able to operate the device without tiring. Also, if the burden placed on the wrist is lower, you'll be able to use the device more comfortably. However if the weight isn't right for you, it could place more of a burden on your body, causing you to feel stress.

The weight of the "LG Q9 (2019) 64GB" is about 159.0g, and the weight of the "vivo Y51 (2015) 16GB" is about 157.0g. Comparing the weight of the two devices, there isn't much difference in weight between the "LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB". That's why the likelihood of fatigue in the fingers and wrists after extended use is about the same for both. That's why it is better to compare the two in terms of other aspects of performance and functionality.

ScoreWeight
LG Q9 (2019) 64GB66/100159.0g
vivo Y51 (2015) 16GB67/100157.0g

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", whose display is easier to use?

The size of the screen affects usability and screen visibility. A larger screen means larger letters and buttons on apps, so the user is less likely to tap adjacent buttons by mistake. In addition, the user can enjoy a more intense experience when playing games and watching videos.

The "LG Q9 (2019) 64GB" has a 6.1inch display. Also, the "vivo Y51 (2015) 16GB" has a 5.0inch display. Comparing the screen size, the "LG Q9 (2019) 64GB" has a considerably larger screen than the "vivo Y51 (2015) 16GB", with a difference of approximately 1inch. The "LG Q9 (2019) 64GB" is superior to the "vivo Y51 (2015) 16GB" in terms of its larger buttons and the intensity of the user's experience when playing games and watching videos. In addition, the larger screen on the "LG Q9 (2019) 64GB" has the benefit of being easier on the user's eyes. If you are looking for a smartphone that you are less likely to mistap, offers a more intense viewing and gaming experience, and decreases eyestrain, then we recommend the "LG Q9 (2019) 64GB" over the "vivo Y51 (2015) 16GB".

ScoreDisplay size
LG Q9 (2019) 64GB90/1006.1inch
vivo Y51 (2015) 16GB74/1005.0inch

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", which has a clearer display?

Pixel density affects picture quality, and the higher the pixel density, the better the picture quality, which means the user can gain more enjoyment from games and videos. In addition, higher picture quality decreases eyestrain, which means that the user will experience less eye fatigue after prolonged use.

The resolution on the "LG Q9 (2019) 64GB" is 1440 x 3120, and pixel density is 563ppi. Also, the resolution on the "vivo Y51 (2015) 16GB" is 540 x 960, and pixel density is 220ppi. Comparing the pixel count, the "LG Q9 (2019) 64GB" has much higher pixel density than the "vivo Y51 (2015) 16GB", with a difference of roughly 343ppi. In terms of having better picture quality and exerting less strain on the eyes, the "LG Q9 (2019) 64GB" is superior to the "vivo Y51 (2015) 16GB". If you are looking for a smartphone that is easy on the eyes, displaying texts and pictures clearly without any blurring, we recommend the "LG Q9 (2019) 64GB" over the "vivo Y51 (2015) 16GB".

ScorePixel density
LG Q9 (2019) 64GB89/100563ppi
vivo Y51 (2015) 16GB36/100220ppi

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", a summary of the differences in battery life

Battery performance greatly affects battery life, but greater battery capacity does not necessarily mean greater battery life, since battery efficiency should also be considered. Bigger screens and higher CPU performance will mean the batteries are depleted more quickly.

The "LG Q9 (2019) 64GB" is 3000.0mAh, and the "vivo Y51 (2015) 16GB" is 2350.0mAh. Regarding battery capacity, the "LG Q9 (2019) 64GB" has greater battery capacity than the "vivo Y51 (2015) 16GB", with a 650mAh difference. If battery is a priority, then the "LG Q9 (2019) 64GB" is recommended over the "vivo Y51 (2015) 16GB".

ScoreBattery capacity
LG Q9 (2019) 64GB65/1003000.0mAh
vivo Y51 (2015) 16GB55/1002350.0mAh

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", which has better CPU?

CPU performance affects the ability to process programs, and the ability to process programs is determined by the product of the number of cores in the CPU and the CPU frequency. The higher this performance is, the more smoothly apps and games will run, and with low performance apps and games become heavy and stress is experienced.

The "LG Q9 (2019) 64GB"'s CPU is a Qualcomm MSM8996 Snapdragon 821, with performance measured at 2.15GHz+1.6GHz×4(4.0-cores). Also, the "vivo Y51 (2015) 16GB"'s CPU is a Qualcomm MSM8916 Snapdragon 410, with performance measured at 1.2GHz×4(4.0-cores). Comparing CPU performance, the "LG Q9 (2019) 64GB" has considerably higher specs than the "vivo Y51 (2015) 16GB". In terms of being able to comfortably play games and run apps smoothly, the "LG Q9 (2019) 64GB" is superior to the "vivo Y51 (2015) 16GB". If you're going for a high spec smart phone that runs smoothly and comfortably handles games, we recommend purchasing the "LG Q9 (2019) 64GB" over the "vivo Y51 (2015) 16GB".

ScoreCPU specs
LG Q9 (2019) 64GB57/1002.15GHz+1.6GHz×4(4.0-cores)
vivo Y51 (2015) 16GB33/1001.2GHz×4(4.0-cores)

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", what's the difference in memory capacity?

RAM affects multitasking ability and the stability of apps. The larger the amount of RAM is, the more stability there will be even in situations where multiple apps are running simultaneously, allowing for comfortable use. In addition, animation will be more smooth, and apps will be less likely to freeze or crash. Also, without sufficient RAM, there are games you won't be able to run, so it is necessary to be careful.

The weight of the "LG Q9 (2019) 64GB" is 4.0GB and the weight of the "vivo Y51 (2015) 16GB" is 2.0GB. Comparing the devices in terms of RAM, the "LG Q9 (2019) 64GB" has a significantly larger amount of RAM than the "vivo Y51 (2015) 16GB", with a difference of about 2GB. In terms of the unlikeliness of crashing and the ease of multitasking, 3D games and VR, the "LG Q9 (2019) 64GB" is superior to the "vivo Y51 (2015) 16GB". If you're looking for a smart phone that can run multiple apps simultaneously with stability and also allows you to comfortably enjoy 3D games and VR, then we recommend purchasing the "LG Q9 (2019) 64GB" over the "vivo Y51 (2015) 16GB".

ScoreRAM size
LG Q9 (2019) 64GB70/1004.0GB
vivo Y51 (2015) 16GB50/1002.0GB

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", which has more data storage?

Storage capacity affects the amount of data that is capable of being stored. The larger the storage capacity, the more pictures you can take and the more applications you can install. In addition, if your smartphone accepts SD cards, then you can increase its storage capacity. However, there are performance related drawbacks, including a slower data transfer rate than the primary memory, and you cannot transfer all your data on the card, so be warned.

The data storage capacity of the "LG Q9 (2019) 64GB" is 64.0GB. Also the "vivo Y51 (2015) 16GB" is 16.0GB. Regarding storage capacity, the "LG Q9 (2019) 64GB" has a much larger data storage capacity compared to the "vivo Y51 (2015) 16GB", with a roughly 48GB difference. In terms of the number of pictures you can save and the applications that you can install, the "LG Q9 (2019) 64GB" is superior to the "vivo Y51 (2015) 16GB". If you are looking for a smartphone that can save more data, we recommend the "LG Q9 (2019) 64GB" over the "vivo Y51 (2015) 16GB".

ScoreStorage size
LG Q9 (2019) 64GB67/10064.0GB
vivo Y51 (2015) 16GB50/10016.0GB

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB" rear camera performance comparison. Which has a higher resolution?

One factor that determines the performance of the exterior camera located on the back of the device (the rear/back camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

"LG Q9 (2019) 64GB" has a 16.0MP main camera. Also, "vivo Y51 (2015) 16GB" has a 8.0MP main camera. Comparing rear camera performance, the "LG Q9 (2019) 64GB" has a much higher pixel count compared to the "vivo Y51 (2015) 16GB", with a roughly 8MP difference. In terms of taking or shooting high resolution pictures or videos that will look clean when printed, the "LG Q9 (2019) 64GB" is superior to the "vivo Y51 (2015) 16GB". If you are looking for a smartphone that is suited for shooting videos and taking pictures, we recommend the "LG Q9 (2019) 64GB" over the "vivo Y51 (2015) 16GB".

ScoreRear-camera resolution
LG Q9 (2019) 64GB68/10016.0MP
vivo Y51 (2015) 16GB50/1008.0MP

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", whose front camera has a better picture quality?

One factor that determines the performance of the exterior camera located on the front of the device (the in/front camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

"LG Q9 (2019) 64GB" has an 8.0MP front camera and "vivo Y51 (2015) 16GB" has an 5.0MP front camera. Comparing rear camera performance, the front camera of the "LG Q9 (2019) 64GB" has a higher pixel count than the "vivo Y51 (2015) 16GB", with a roughly 3MP difference. As a result, the "LG Q9 (2019) 64GB" is better able to take high quality selfies than the "vivo Y51 (2015) 16GB", and the pictures will look cleaner when printed. Therefore, we recommend the "LG Q9 (2019) 64GB".

ScoreFront-camera resolution
LG Q9 (2019) 64GB58/1008.0MP
vivo Y51 (2015) 16GB50/1005.0MP

"LG Q9 (2019) 64GB" and "vivo Y51 (2015) 16GB", performance comparison by specification sheet

LG Q9 (2019) 64GBvivo Y51 (2015) 16GB
ImageLG Q9 (2019) 64GBvivo Y51 (2015) 16GB
MakerLGvivo
Release date2019-072015-12
ColorCarmine Red/New Aurora Black/New Moroccan BlueWhite
OSAndroidAndroid
Dimensions (width x height x thickness)71.9mm x 153.2mm x 7.9mm71.7mm x 143.8mm x 7.5mm
Weight159.0g157.0g
Display size6.1inch5.0inch
Display typeIPS LCDIPS LCD
Screen resolution (width x height)1440 x 3120540 x 960
Pixel density563ppi220ppi
Battery capacity3000.0mAh2350.0mAh
ChipsetQualcomm MSM8996 Snapdragon 821Qualcomm MSM8916 Snapdragon 410
CPU specs2.15GHz+1.6GHz×4(4.0-cores)1.2GHz×4(4.0-cores)
RAM size4.0GB2.0GB
Storage size64.0GB16.0GB
Rear-camera resolution16.0MP8.0MP
Front-camera resolution8.0MP5.0MP

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