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Vivo S1 (China) 128GB vs Oppo A9 (2019) 128GB: Full Comparison!

Created date: 2019-07-11 04:56:14, Updated date: 2020-04-16 21:19:17

vivo S1 (China) 128GBOppo A9 (2019) 128GB
vivo S1 (China) 128GBOppo A9 (2019) 128GB

Which do we recommend after comparing the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB"? We evaluated the differences between the two models. This article is recommended for those who are trying to choose between the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB".

vivo S1 (China) 128GBOppo A9 (2019) 128GB
vivo S1 (China) 128GB

Oppo A9 (2019) 128GB

General rating:

70.9/100

(The 4618th of all smartphones)

70.6/100

(The 3438th of all smartphones)

Grip
51/100
51/100
Screen quality
80/100
80/100
Performance
96/100
98/100
Storage size
90/100
90/100
Battery
100/100
100/100
Rear-camera resolution
70/100
80/100
Front-camera resolution
100/100
100/100

What is the difference between the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB"? See a detailed comparison of ease of use and performance

Comparison of weight and size of the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB"

The design of vivo S1 (China) 128GB

The "vivo S1 (China) 128GB" is 162.0mm long, 76.0mm wide, and 8.5mm thick. It weighs 189.5g.

The design of Oppo A9 (2019) 128GB

The "Oppo A9 (2019) 128GB" is 162.0mm long, 76.1mm wide, and 8.3mm thick. It weighs 190.0g.

Which is the better design to use?

Both the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB" are equally easy to use with one hand. Hiragana flick input is basically just as easy to use with "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB". Both the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB" are basically equally portable and easy to handle.

The difference in weight is 0.5g. There is very little difference in weight between the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB", meaning that the burden on the hands even when used for a long time is pretty much the same.

vivo S1 (China) 128GB

Oppo A9 (2019) 128GB

Ease of holding it in one hand61/10062/100
How much it does not feel heavy to hold in one hand26/10026/100
Ease of carrying around58/10058/100

Compare the display of the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB"

Display of the vivo S1 (China) 128GB

The "vivo S1 (China) 128GB" uses a IPS LCD liquid crystal. The resolution is 1080 x 2340, and the pixel density is 394ppi. The "vivo S1 (China) 128GB" has a 6.53inch screen size.

Display of the Oppo A9 (2019) 128GB

The "Oppo A9 (2019) 128GB" uses a LTPS IPS LCD liquid crystal. The resolution is 1080 x 2340, and the pixel density is 394ppi. The "Oppo A9 (2019) 128GB" has a 6.53inch screen size.

Which has a better screen?

When actually viewing the two phones' onscreen displays, it is obvious that they are roughly the same size. For doing internet research using systems such as SNS, there is not much difference between the two phones. Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose. The gaming screens of these two phones are roughly the same size. Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose.

There is very little difference in the clarity of the displays of "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB" when used for research, gaming, or other similar purposes. When using the smartphone as a VR, the screen is generally held much closer to the face than when using the smartphone for other purposes, and so the clarity of the screen becomes a rather important factor. When you compare how easy it is to see the VR on the two phones, it is pretty much the same.

vivo S1 (China) 128GB

Oppo A9 (2019) 128GB

How suited is the screen for usual usage?80/10080/100
How suited is the screen to play games on?84/10084/100

Compare the camera performances of the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB"

Camera performance of vivo S1 (China) 128GB

The main camera of the "vivo S1 (China) 128GB" has 12.0MP. The front camera has 25.0MP.

Camera performance of Oppo A9 (2019) 128GB

The main camera of the "Oppo A9 (2019) 128GB" has 16.0MP. The front camera has 16.0MP.

Which camera performance is better?

The back cameras thus have a 4MP difference in comparison. The "Oppo A9 (2019) 128GB" also functions better for long-shot photos for the perfect group photo or a picturesque shot of a beautiful location. The "Oppo A9 (2019) 128GB"'s rear camera triumphs as well, boasting a better megapixel count for close-up Instagram-worthy pictures of meals and desserts. Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose.

There is a 9MP difference in front camera pixel number. When shooting objects or people with the front phone camera from a short distance, such as taking a selfie with a selfie-stick, there is very little difference between the pixel counts of the two phones, even when it comes to the scenery in the background of such photographs. Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose. There is not much difference between the pixel counts of "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB" when it comes to taking close-up photographs such as selfies or profile pics with the front phone camera.

vivo S1 (China) 128GB

Oppo A9 (2019) 128GB

Is is suited to taking far away objects with the rear camera?70/10080/100
Is it suited for taking close objects with the built-in camera?100/100100/100

Comparison of the processing capabilities of the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB"

The processing capability of the vivo S1 (China) 128GB

Performance is defined by the chipset, and the "vivo S1 (China) 128GB" uses the Mediatek MT6771 Helio P70 SoC. The CPU performance is 2.1GHz+2.0GHz×8(8.0-cores). The memory capacity is 6.0GB.

The processing capability of the Oppo A9 (2019) 128GB

Performance is defined by the chipset, and the "Oppo A9 (2019) 128GB" uses the Mediatek MT6771V Helio P70 SoC. The CPU performance is 2.1GHz+2.0GHz×8(8.0-cores). The memory capacity is 8.0GB.

Which has the better processing capability?

The CPU specs are the same for both phones. This is a 2GB difference in memory capacity. The memory of "Oppo A9 (2019) 128GB" is slightly larger, so "Oppo A9 (2019) 128GB" is recommended over "vivo S1 (China) 128GB" for multitasking.

For phone calls, emails, messaging, using SNS or most fundamental features, the differences between the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" are not large at all. For people who mainly use their phones to look things up online, watch videos and play games occasionally I can recommend the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" equally. Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose.

There is basically no difference between "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB" when playing 2D games or basic 3D games. Functionality is about the same for full-scale 3D games, no matter which phone model is used. Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose.

vivo S1 (China) 128GB

Oppo A9 (2019) 128GB

Review on the CPU capbility and memory capacity when using Social Networks or the Internet98/100100/100
Review on the CPU speed and the memory capacity while playing 3D games94/10097/100

Comparison of the battery life of the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB"

Battery performance of vivo S1 (China) 128GB

The "vivo S1 (China) 128GB" has a battery capacity of 3940.0mAh.

Battery performance of Oppo A9 (2019) 128GB

The "Oppo A9 (2019) 128GB" has a battery capacity of 4020.0mAh.

Which battery perfomances is better?

This makes a difference in battery capacity of 80mAh, but it is not enough to only compare the capacity. With a high-performance CPU, the battery drains faster, and a larger screen also uses more battery.

If you only use it to make phone calls or checking the time there is no large difference between them. For looking things up online, checking SNS, playing games occasionally or for most frequent use, it doesn't feel like there is much difference between the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB". Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose.

If you're using it frequently, for example playing games for a long time or using it to watch movies, you may feel no difference between the two devices. Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose.

vivo S1 (China) 128GB

Oppo A9 (2019) 128GB

Review on the battery life of a phone mainly using Social Networks and the Internet100/100100/100
Review on the battery life of a phone mainly using mainly games and videos100/100100/100

Compare the storage capacity of the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB"

The storage capacity of the vivo S1 (China) 128GB

The "vivo S1 (China) 128GB" has 128.0GB of internal memory. It is also compatible with SD cards, so when there is insufficient storage space, then a SD card can be used to add more storage. A SD with a maximum of 256.0GB can be used.

The storage capacity of the Oppo A9 (2019) 128GB

The "Oppo A9 (2019) 128GB" has 128.0GB of internal memory. It is also compatible with SD cards, so when there is insufficient storage space, then a SD card can be used to add more storage. A SD with a maximum of 256.0GB can be used.

Which has the easier storage to use?

If you are only downloading a few games and apps (such as SNS) to use on your phone, it really doesn't matter if you choose "vivo S1 (China) 128GB" or "Oppo A9 (2019) 128GB". If you are hoping to install many different games on their phone, the amount of storage is the same no matter which of these two devices you choose to buy. Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose.

Because the speed of loading from or saving to the SD card is slow, it is suited for saving pictures or videos. If you want to save long videos or save lots of photos, it does not make much difference whether you choose "vivo S1 (China) 128GB" or "Oppo A9 (2019) 128GB". Both the "vivo S1 (China) 128GB" and the "Oppo A9 (2019) 128GB" can be easily used for this kind of purpose.

vivo S1 (China) 128GB

Oppo A9 (2019) 128GB

Review on the storage capacity when playing many games90/10090/100
Review on when you store many pictures and videos92/10092/100

Which to buy, the "vivo S1 (China) 128GB" or "Oppo A9 (2019) 128GB"

At the end of the day which is better, the "vivo S1 (China) 128GB" or "Oppo A9 (2019) 128GB"?

When it comes to being easy to handle and carry around, there is hardly any difference between "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB". If choosing based on screen size, there is hardly any difference between "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB". There isn't much difference between "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB" in terms of performance or specifications. Because both have advantages and disadvantages, I think that it is best to stick to the most important points that you want to emphasize.

vivo S1 (China) 128GB

Oppo A9 (2019) 128GB

Handling51/10051/100
Display80/10080/100
CPU specs96/10098/100
General rating83/10084/100

Is it recommended to buy the vivo S1 (China) 128GB, compared with other smartphones?

Compared to other smartphones, the "vivo S1 (China) 128GB" is averagely easy to hold. Although it can be a little difficult, it is the right size to be able to operate with one hand. The screen size is larger than that of standard smartphones. It is suited for typing long texts and so can be used to read or edit office texts. In addition, its processing capability is quite excellent compared to the average smart phone. It is suitable for almost all uses, including games and VR. It may be a bit extravagant for normal use. Looking at the overall specifications, the "vivo S1 (China) 128GB" is a high-end smart phone.

Is it recommended to buy the Oppo A9 (2019) 128GB, compared with other smartphones?

Compared to other smartphones, the "Oppo A9 (2019) 128GB" is averagely easy to hold. Although it can be a little difficult, it is the right size to be able to operate with one hand. The screen size is larger than that of standard smartphones. It is suited for typing long texts and so can be used to read or edit office texts. In addition, its processing capability is quite excellent compared to the average smart phone. It is suitable for almost all uses, including games and VR. It may be a bit extravagant for normal use. Looking at the overall specifications, the "Oppo A9 (2019) 128GB" is a high-end smart phone.

What are the spec differences between the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB" ?

A summary of the technical specifications of the "vivo S1 (China) 128GB" and "Oppo A9 (2019) 128GB". Functions and performance variations on the same model will be highlighted in red.

vivo S1 (China) 128GBOppo A9 (2019) 128GB
vivo S1 (China) 128GBOppo A9 (2019) 128GB
ColorBlue/Pink/Ice blackMica Green/Ice Jade White/Fluorite Purple
OSAndroidAndroid
Dimensions (width x height x thickness)76.0mm x 162.0mm x 8.5mm76.1mm x 162.0mm x 8.3mm
Weight189.5g190.0g
Display size6.53inch6.53inch
Display typeIPS LCDLTPS IPS LCD
Screen resolution (width x height)1080 x 23401080 x 2340
Pixel density394ppi394ppi
Battery capacity3940.0mAh4020.0mAh
ChipsetMediatek MT6771 Helio P70Mediatek MT6771V Helio P70
CPU specs2.1GHz+2.0GHz×8(8.0-cores)2.1GHz+2.0GHz×8(8.0-cores)
RAM size6.0GB8.0GB
Storage size128.0GB128.0GB
Rear-camera resolution12.0MP16.0MP
Front-camera resolution25.0MP16.0MP

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