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Compare vivo S1 (China) 128GB vs vivo Y91 (Mediatek) 64GB

Created date: 2019-03-28 04:29:00, Updated date: 2021-10-20 14:25:07

vivo S1 (China) 128GBvivo Y91 (Mediatek) 64GB
vivo S1 (China) 128GBvivo Y91 (Mediatek) 64GB

How are the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB" different? We have tested and evaluated their differences. We also explain which one may be best for you.

vivo S1 (China) 128GBvivo Y91 (Mediatek) 64GB
vivo S1 (China) 128GB

vivo Y91 (Mediatek) 64GB

General rating:
Griprating-image2.6
76.0mm x 162.0mm x 8.5mm
rating-image2.9
75.1mm x 155.1mm x 8.3mm
Screen qualityrating-image4.0
IPS LCD, 6.53inch, 1080 x 2340
rating-image3.3
IPS LCD, 6.22inch, 720 x 1520
Performancerating-image4.8
Mediatek MT6771 Helio P70, 2.1GHz+2.0GHz×8(8.0-cores), 6.0GB
rating-image4.3
Mediatek MT6762 Helio P22, 2.0GHz×8(8.0-cores), 3.0GB
Storage sizerating-image4.5
128.0GB
rating-image4.2
64.0GB
Batteryrating-image5.0
3940.0mAh
rating-image5.0
4030.0mAh
Rear-camera resolutionrating-image3.5
12.0MP
rating-image3.6
13.0MP
Front-camera resolutionrating-image5.0
25.0MP
rating-image4.0
8.0MP

What is the difference between the "vivo S1 (China) 128GB" and the "vivo Y91 (Mediatek) 64GB"? See a detailed comparison of ease of use and performance

Comparison of weight and size of the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB"

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 vivo Y91 (Mediatek) 64GB

The "vivo Y91 (Mediatek) 64GB" is 155.1mm long, 75.1mm wide, and 8.3mm thick. It weighs 163.5g.

Which is the better design to use?

In comparison, the size difference is 6.9mm in length, 0.9mm in width, and 0.1mm in thickness. Both the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB" are equally easy to use with one hand. Hiragana flick input is basically just as easy to use with "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB". Both the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB" are basically equally portable and easy to handle.

The difference in weight is 26g. The "vivo Y91 (Mediatek) 64GB" is much lighter, putting less burden on the hand.

vivo S1 (China) 128GB

vivo Y91 (Mediatek) 64GB

Ease of holding it in one hand61/10064/100
How much it does not feel heavy to hold in one hand26/10043/100
Ease of carrying around58/10059/100

Compare the display of the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB"

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 vivo Y91 (Mediatek) 64GB

The "vivo Y91 (Mediatek) 64GB" uses a IPS LCD liquid crystal. The resolution is 720 x 1520, and the pixel density is 270ppi. The "vivo Y91 (Mediatek) 64GB" has a 6.22inch screen size.

Which has a better screen?

This makes a 0.31inch difference in the display sizes. 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 "vivo Y91 (Mediatek) 64GB" 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 "vivo Y91 (Mediatek) 64GB" can be easily used for this kind of purpose.

In terms of display, the "vivo S1 (China) 128GB" is a better choice for those looking to use their phone for browsing the web or for gaming. 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. The "vivo S1 (China) 128GB" also offers a crisp, cleaner display when using a VR headset than the "vivo Y91 (Mediatek) 64GB". The "vivo Y91 (Mediatek) 64GB" has the performance needed for this kind of purpose.

vivo S1 (China) 128GB

vivo Y91 (Mediatek) 64GB

How suited is the screen for usual usage?80/10077/100
How suited is the screen to play games on?84/10081/100

Compare the camera performances of the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB"

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 vivo Y91 (Mediatek) 64GB

The main camera of the "vivo Y91 (Mediatek) 64GB" has 13.0MP. The front camera has 8.0MP.

Which camera performance is better?

The back cameras thus have a 1MP difference in comparison. There is very little difference in the performance (or pixel count) of "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB" when shooting distant objects or Instagrammable landscapes. Also, when using the rear camera to snap close shots of photogenic sweets or meals, there is very little difference between the pixel counts of the two phones. Both the "vivo S1 (China) 128GB" and the "vivo Y91 (Mediatek) 64GB" can be easily used for this kind of purpose.

There is a 17MP difference in front camera pixel number. The "vivo S1 (China) 128GB"'s front camera also works terrifically well with selfie sticks and for capturing distant objects like the background scenery in your selfies. The "vivo S1 (China) 128GB" has the necessary specs for this kind of purpose. The "vivo S1 (China) 128GB"'s front camera has a more suitable megapixel count for shooting objects up close for selfies and such.

vivo S1 (China) 128GB

vivo Y91 (Mediatek) 64GB

Is is suited to taking far away objects with the rear camera?70/10072/100
Is it suited for taking close objects with the built-in camera?100/10080/100

Comparison of the processing capabilities of the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB"

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 vivo Y91 (Mediatek) 64GB

Performance is defined by the chipset, and the "vivo Y91 (Mediatek) 64GB" uses the Mediatek MT6762 Helio P22 SoC. The CPU performance is 2.0GHz×8(8.0-cores). The memory capacity is 3.0GB.

Which has the better processing capability?

As compared to the "vivo Y91 (Mediatek) 64GB", the "vivo S1 (China) 128GB" boasts boasts a better CPU and specs. This is a 3GB difference in memory capacity. The "vivo S1 (China) 128GB" has more memory storage, making the "vivo S1 (China) 128GB" work better for multitasking or running 3D games.

For using fundamental features such as calls, emails, messages and using SNS, I am more inclined to recommend the "vivo S1 (China) 128GB". 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 "vivo Y91 (Mediatek) 64GB" equally. Both the "vivo S1 (China) 128GB" and the "vivo Y91 (Mediatek) 64GB" can be easily used for this kind of purpose.

For playing 2D and simpler 3D games, "vivo S1 (China) 128GB" is more suitable as the games are less likely to stall. Complex, full-fledged 3D games definitely run better on the "vivo S1 (China) 128GB" than the "vivo Y91 (Mediatek) 64GB". Both the "vivo S1 (China) 128GB" and the "vivo Y91 (Mediatek) 64GB" can be easily used for this kind of purpose.

vivo S1 (China) 128GB

vivo Y91 (Mediatek) 64GB

Review on the CPU capbility and memory capacity when using Social Networks or the Internet98/10092/100
Review on the CPU speed and the memory capacity while playing 3D games94/10076/100

Comparison of the battery life of the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB"

Battery performance of vivo S1 (China) 128GB

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

Battery performance of vivo Y91 (Mediatek) 64GB

The "vivo Y91 (Mediatek) 64GB" has a battery capacity of 4030.0mAh.

Which battery perfomances is better?

This makes a difference in battery capacity of 90mAh, 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 "vivo Y91 (Mediatek) 64GB". Both the "vivo S1 (China) 128GB" and the "vivo Y91 (Mediatek) 64GB" 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 "vivo Y91 (Mediatek) 64GB" can be easily used for this kind of purpose.

vivo S1 (China) 128GB

vivo Y91 (Mediatek) 64GB

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 "vivo Y91 (Mediatek) 64GB"

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 vivo Y91 (Mediatek) 64GB

The "vivo Y91 (Mediatek) 64GB" has 64.0GB 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?

The difference in internal memory is about 64GB. "vivo S1 (China) 128GB" is recommended if you are using your phone mainly for downloading games and using apps such as social media. Avid gamers should look to the "vivo S1 (China) 128GB" for fulfilling their storage needs, as the "vivo Y91 (Mediatek) 64GB" unfortunately falls behind here. Both the "vivo S1 (China) 128GB" and the "vivo Y91 (Mediatek) 64GB" can be easily used for this kind of purpose.

When the storage added with a SD card is included, then the difference is about 64GB. 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 "vivo Y91 (Mediatek) 64GB". Both the "vivo S1 (China) 128GB" and the "vivo Y91 (Mediatek) 64GB" can be easily used for this kind of purpose.

vivo S1 (China) 128GB

vivo Y91 (Mediatek) 64GB

Review on the storage capacity when playing many games90/10084/100
Review on when you store many pictures and videos92/10091/100

Which to buy, the "vivo S1 (China) 128GB" or "vivo Y91 (Mediatek) 64GB"

At the end of the day which is better, the "vivo S1 (China) 128GB" or "vivo Y91 (Mediatek) 64GB"?

"vivo Y91 (Mediatek) 64GB" is easier for the user to hold and is more compact, and so it is recommended. Its perfect screen size of 6.53inch makes the "vivo S1 (China) 128GB" a lot easier to use. The "vivo S1 (China) 128GB" also hands down has the superior specs. When comparing "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB" overall, "vivo S1 (China) 128GB" is a more balanced model and is recommended.

vivo S1 (China) 128GB

vivo Y91 (Mediatek) 64GB

Handling51/10057/100
Display80/10066/100
CPU specs96/10085/100
General rating83/10077/100

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 vivo Y91 (Mediatek) 64GB, compared with other smartphones?

Compared to other smartphones, the "vivo Y91 (Mediatek) 64GB" 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 Y91 (Mediatek) 64GB" is a middle-range to high-end smart phone.

What are the spec differences between the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB" ?

A summary of the technical specifications of the "vivo S1 (China) 128GB" and "vivo Y91 (Mediatek) 64GB". Functions and performance variations on the same model will be highlighted in red.

vivo S1 (China) 128GBvivo Y91 (Mediatek) 64GB
vivo S1 (China) 128GBvivo Y91 (Mediatek) 64GB
ColorBlue/Pink/Ice blackStarry Black/Ocean Blue
OSAndroidAndroid
Dimensions (width x height x thickness)76.0mm x 162.0mm x 8.5mm75.1mm x 155.1mm x 8.3mm
Weight189.5g163.5g
Display size6.53inch6.22inch
Display typeIPS LCDIPS LCD
Screen resolution (width x height)1080 x 2340720 x 1520
Pixel density394ppi270ppi
Battery capacity3940.0mAh4030.0mAh
ChipsetMediatek MT6771 Helio P70Mediatek MT6762 Helio P22
CPU specs2.1GHz+2.0GHz×8(8.0-cores)2.0GHz×8(8.0-cores)
RAM size6.0GB3.0GB
Storage size128.0GB64.0GB
Rear-camera resolution12.0MP13.0MP
Front-camera resolution25.0MP8.0MP

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