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Which one is better, the Oppo A31 (2020) 128GB or BLU J4 (2019) 32GB? We did a deep-dive comparison categorised by purpose of use!

Created date: 2020-02-27 13:26:12, Updated date: 2022-08-03 21:22:34

BLU J4 (2019) 32GBOppo A31 (2020) 128GB
BLU J4 (2019) 32GBOppo A31 (2020) 128GB

How are the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB" different? We have tested and evaluated their differences. We also explain which one may be best for you.

BLU J4 (2019) 32GBOppo A31 (2020) 128GB
BLU J4 (2019) 32GB

Oppo A31 (2020) 128GB

General rating:

47/100

(The 3913th of all smartphones)

63.2/100

(The 3634th of all smartphones)

Grip
59/100
53/100
Screen quality
63/100
68/100
Performance
28/100
89/100
Storage size
78/100
90/100
Battery
80/100
100/100
Rear-camera resolution
50/100
70/100
Front-camera resolution
80/100
80/100

What is the difference between the "BLU J4 (2019) 32GB" and the "Oppo A31 (2020) 128GB"? See a detailed comparison of ease of use and performance

Comparison of weight and size of the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB"

The design of BLU J4 (2019) 32GB

The "BLU J4 (2019) 32GB" is 151.0mm long, 72.3mm wide, and 10.0mm thick. It weighs 158.0g.

The design of Oppo A31 (2020) 128GB

The "Oppo A31 (2020) 128GB" is 163.9mm long, 75.5mm wide, and 8.3mm thick. It weighs 180.0g.

Which is the better design to use?

In comparison, the size difference is 12.9mm in length, 3.2mm in width, and 1.6mm in thickness. Both the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB" are equally easy to use with one hand. Hiragana flick input is basically just as easy to use with "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB". Both the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB" are basically equally portable and easy to handle.

The difference in weight is 22g. The "BLU J4 (2019) 32GB" is much lighter, putting less burden on the hand.

BLU J4 (2019) 32GB

Oppo A31 (2020) 128GB

Ease of holding it in one hand66/10063/100
How much it does not feel heavy to hold in one hand47/10032/100
Ease of carrying around60/10059/100

Compare the display of the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB"

Display of the BLU J4 (2019) 32GB

The "BLU J4 (2019) 32GB" uses a IPS LCD liquid crystal. The resolution is 720 x 1440, and the pixel density is 292ppi. The "BLU J4 (2019) 32GB" has a 5.5inch screen size.

Display of the Oppo A31 (2020) 128GB

The "Oppo A31 (2020) 128GB" uses a IPS LCD liquid crystal. The resolution is 720 x 1600, and the pixel density is 269ppi. The "Oppo A31 (2020) 128GB" has a 6.5inch screen size.

Which has a better screen?

This makes a 1inch difference in the display sizes. Lining up the displays side by side makes the difference in size clearly visible. "Oppo A31 (2020) 128GB" has a bigger display that is easier to use, especially for looking things up on the Internet and using social media. Both the "BLU J4 (2019) 32GB" and the "Oppo A31 (2020) 128GB" can be easily used for this kind of purpose. In the gaming end, the "Oppo A31 (2020) 128GB" offers a more suitable screen size. Both the "BLU J4 (2019) 32GB" and the "Oppo A31 (2020) 128GB" can be easily used for this kind of purpose.

The display of "BLU J4 (2019) 32GB" looks sleeker than that of "Oppo A31 (2020) 128GB", and is more suited for everyday use such looking things up on the Internet and playing mobile games. 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. Neither the "BLU J4 (2019) 32GB" nor the "Oppo A31 (2020) 128GB" have the necessary specs for this kind of purpose, so the experience will be unsatisfactory.

BLU J4 (2019) 32GB

Oppo A31 (2020) 128GB

How suited is the screen for usual usage?72/10080/100
How suited is the screen to play games on?73/10084/100

Compare the camera performances of the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB"

Camera performance of BLU J4 (2019) 32GB

The main camera of the "BLU J4 (2019) 32GB" has 8.0MP. The front camera has 8.0MP.

Camera performance of Oppo A31 (2020) 128GB

The main camera of the "Oppo A31 (2020) 128GB" has 12.0MP. The front camera has 8.0MP.

Which camera performance is better?

The back cameras thus have a 4MP difference in comparison. The "Oppo A31 (2020) 128GB" also functions better for long-shot photos for the perfect group photo or a picturesque shot of a beautiful location. The "Oppo A31 (2020) 128GB"'s rear camera triumphs as well, boasting a better megapixel count for close-up Instagram-worthy pictures of meals and desserts. The "Oppo A31 (2020) 128GB" has the necessary specs for this kind of purpose.

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. There is not much difference between the pixel counts of "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB" when it comes to taking close-up photographs such as selfies or profile pics with the front phone camera.

BLU J4 (2019) 32GB

Oppo A31 (2020) 128GB

Is is suited to taking far away objects with the rear camera?50/10070/100
Is it suited for taking close objects with the built-in camera?80/10080/100

Comparison of the processing capabilities of the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB"

The processing capability of the BLU J4 (2019) 32GB

The CPU performance is 1.3GHz×4(4.0-cores). The memory capacity is 1.0GB.

The processing capability of the Oppo A31 (2020) 128GB

Performance is defined by the chipset, and the "Oppo A31 (2020) 128GB" uses the Mediatek MT6765V/CB Helio P35 SoC. The CPU performance is 2.3GHz+1.8GHz×8(8.0-cores). The memory capacity is 4.0GB.

Which has the better processing capability?

As compared to the "BLU J4 (2019) 32GB", the "Oppo A31 (2020) 128GB" boasts boasts a better CPU and specs. This is a 3GB difference in memory capacity. The "Oppo A31 (2020) 128GB" has more memory storage, making the "Oppo A31 (2020) 128GB" work better for multitasking or running 3D games.

For those who only use their phone's basic features like emailing, instant messaging, or social media, the "Oppo A31 (2020) 128GB" is the better choice to buy over the "BLU J4 (2019) 32GB". Users looking for a phone to meet their web browsing and video playing needs, with the occasional game every now and then, should definitely go for the "Oppo A31 (2020) 128GB". The "Oppo A31 (2020) 128GB" has the necessary specs for this kind of purpose.

The "Oppo A31 (2020) 128GB" runs 2D games and simple 3D games much more smoothly, making it the better choice in this area. Complex, full-fledged 3D games definitely run better on the "Oppo A31 (2020) 128GB" than the "BLU J4 (2019) 32GB". The "Oppo A31 (2020) 128GB" has the necessary specs for this kind of purpose, but the "BLU J4 (2019) 32GB" shows only an unsatisfactory performance.

BLU J4 (2019) 32GB

Oppo A31 (2020) 128GB

Review on the CPU capbility and memory capacity when using Social Networks or the Internet47/10091/100
Review on the CPU speed and the memory capacity while playing 3D games12/10085/100

Comparison of the battery life of the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB"

Battery performance of BLU J4 (2019) 32GB

The "BLU J4 (2019) 32GB" has a battery capacity of 2200.0mAh.

Battery performance of Oppo A31 (2020) 128GB

The "Oppo A31 (2020) 128GB" has a battery capacity of 4230.0mAh.

Which battery perfomances is better?

This makes a difference in battery capacity of 2030mAh, 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.

The "Oppo A31 (2020) 128GB" is also a great choice for those who only use their phone for occasional phone calls or for checking the time. For people who tend to use their phone for looking up things on the internet, checking up on social media, or playing the occasional game, I recommend the "Oppo A31 (2020) 128GB" over the "BLU J4 (2019) 32GB". Both the "BLU J4 (2019) 32GB" and the "Oppo A31 (2020) 128GB" can be easily used for this kind of purpose.

The battery life of the "Oppo A31 (2020) 128GB" is well equipped to handle long hours of gaming, video playback, and other kinds of frequent daily use. The "Oppo A31 (2020) 128GB" has the necessary specs for this kind of purpose.

BLU J4 (2019) 32GB

Oppo A31 (2020) 128GB

Review on the battery life of a phone mainly using Social Networks and the Internet80/100100/100
Review on the battery life of a phone mainly using mainly games and videos62/100100/100

Compare the storage capacity of the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB"

The storage capacity of the BLU J4 (2019) 32GB

The "BLU J4 (2019) 32GB" has 32.0GB 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.

The storage capacity of the Oppo A31 (2020) 128GB

The "Oppo A31 (2020) 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.

Which has the easier storage to use?

The difference in internal memory is about 96GB. The "Oppo A31 (2020) 128GB" offers plenty of storage for those looking to use a few social media apps and games. Avid gamers should look to the "Oppo A31 (2020) 128GB" for fulfilling their storage needs, as the "BLU J4 (2019) 32GB" unfortunately falls behind here. The "Oppo A31 (2020) 128GB" has the necessary specs 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.

BLU J4 (2019) 32GB

Oppo A31 (2020) 128GB

Review on the storage capacity when playing many games78/10090/100
Review on when you store many pictures and videos - -

Which to buy, the "BLU J4 (2019) 32GB" or "Oppo A31 (2020) 128GB"

At the end of the day which is better, the "BLU J4 (2019) 32GB" or "Oppo A31 (2020) 128GB"?

"BLU J4 (2019) 32GB" is easier for the user to hold and is more compact, and so it is recommended. If you want a larger screen, "Oppo A31 (2020) 128GB" is recommended as it has a 6.5inch screen. The "Oppo A31 (2020) 128GB" also hands down has the superior specs. Between the "Oppo A31 (2020) 128GB" and the "BLU J4 (2019) 32GB", the "Oppo A31 (2020) 128GB" is overall the clear winner.

BLU J4 (2019) 32GB

Oppo A31 (2020) 128GB

Handling59/10053/100
Display63/10068/100
CPU specs28/10089/100
General rating56/10075/100

Is it recommended to buy the BLU J4 (2019) 32GB, compared with other smartphones?

Compared to other smartphones, the "BLU J4 (2019) 32GB" 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 comparable to that of standard smartphones, so it is suited for doing internet searches and browsing or for simple SNS messaging. Also, its specs show that its processing abilities are a bit lower than the average smartphone. This may be okay for people who don't often use their phone, but it's a good idea for people who intend to use it as their main device to choose a smartphone with higher performance capabilities. Judging from the overall specs, the "BLU J4 (2019) 32GB" is a mid-range smartphone.

Is it recommended to buy the Oppo A31 (2020) 128GB, compared with other smartphones?

Compared to other smartphones, the "Oppo A31 (2020) 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 A31 (2020) 128GB" is a middle-range to high-end smart phone.

What are the spec differences between the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB" ?

A summary of the technical specifications of the "BLU J4 (2019) 32GB" and "Oppo A31 (2020) 128GB". Functions and performance variations on the same model will be highlighted in red.

BLU J4 (2019) 32GBOppo A31 (2020) 128GB
BLU J4 (2019) 32GBOppo A31 (2020) 128GB
ColorBlue/Black/BrownFantasy White/Mystery Black
OSAndroidAndroid
Dimensions (width x height x thickness)72.3mm x 151.0mm x 10.0mm75.5mm x 163.9mm x 8.3mm
Weight158.0g180.0g
Display size5.5inch6.5inch
Display typeIPS LCDIPS LCD
Screen resolution (width x height)720 x 1440720 x 1600
Pixel density292ppi269ppi
Battery capacity2200.0mAh4230.0mAh
ChipsetMediatek MT6765V/CB Helio P35
CPU specs1.3GHz×4(4.0-cores)2.3GHz+1.8GHz×8(8.0-cores)
RAM size1.0GB4.0GB
Storage size32.0GB128.0GB
Rear-camera resolution8.0MP12.0MP
Front-camera resolution8.0MP8.0MP

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