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Compare Lava Z4 (2021) 64GB vs Lava Z91 (2018) 32GB

Created date: 2021-01-11 18:43:10

Lava Z4 (2021) 64GBLava Z91 (2018) 32GB
Lava Z4 (2021) 64GBLava Z91 (2018) 32GB

Are you having trouble comparing the differences in features and performance of the "Lava Z4 (2021) 64GB" and "Lava Z91 (2018) 32GB", 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.

Lava Z4 (2021) 64GBLava Z91 (2018) 32GB
Lava Z4 (2021) 64GB

Lava Z91 (2018) 32GB

General rating:

63.1/100

(The 4778th of all smartphones)

56.2/100

(The 1371th of all smartphones)

Portability
59/100
66/100
Weight
54/100
71/100
Size of screen
90/100
85/100
Screen clarity
54/100
57/100
Battery duration
- /100
65/100
Processing capability
88/100
50/100
Memory capacity
70/100
60/100
Storage capacity
67/100
55/100
Rear camera function
61/100
61/100
Front camera function
75/100
58/100

Compare Performance and Usability

Size comparison of "Lava Z4 (2021) 64GB" and "Lava Z91 (2018) 32GB". Which one would you choose?

Your device's size has a huge influence on how easy it is to hold or to operate with one hand. The smaller your device's width, the easier it will be to hold, but you'll also need to take device thickness into account. And when the length and width are both smaller, you'll find that it's much easier for you to operate it one-handed, since your fingers will find it much easier to reach where you want them to. On the other hand, longer lengths and wider widths might lead to devices that are hard to carry in your pocket, bulky even when you keep them in your bag, and all around less portable.

The "Lava Z4 (2021) 64GB" is 75.8mm wide, 164.5mm tall, and 9.0mm thick. The "Lava Z91 (2018) 32GB" is 72.9mm tall, 152.0mm wide, and 7.7mm thick.

Comparing the width and thickness of the main unit, the "Lava Z91 (2018) 32GB" is smaller and more compact compared to the "Lava Z4 (2021) 64GB". Therefore, it is easier to grip and hold the "Lava Z91 (2018) 32GB" than the "Lava Z4 (2021) 64GB". For this reason, the "Lava Z91 (2018) 32GB" is recommended.

Comparing the width and height of the main unit, the "Lava Z91 (2018) 32GB" is smaller and more compact than the "Lava Z4 (2021) 64GB". As a result, the "Lava Z91 (2018) 32GB" is easier to operate with one hand and it is more portable without getting in your way than the "Lava Z4 (2021) 64GB". Therefore, the "Lava Z91 (2018) 32GB" is recommended.

Comparing the overall size of the main unit, the "Lava Z91 (2018) 32GB" is smaller than the "Lava Z4 (2021) 64GB". As a result, it is easier to use the "Lava Z91 (2018) 32GB" with one hand compared to the "Lava Z4 (2021) 64GB", and its size makes it more comfortable to carry around. For this reason, the "Lava Z91 (2018) 32GB" is recommended.

ScoreDimensions (width x height x thickness)
Lava Z4 (2021) 64GB59/10075.8mm x 164.5mm x 9.0mm
Lava Z91 (2018) 32GB66/10072.9mm x 152.0mm x 7.7mm

Which one is easier to hold, "Lava Z4 (2021) 64GB" or "Lava Z91 (2018) 32GB"? Compare weight

The device weight will effect how quickly you tire from holding it, and how much stress is put on your wrist. The lighter it is, the longer you can hold it without feeling tired. Also, less stress on your wrist will make using it easier and more pleasant. Unless the weight is right for you, it might put too much strain on your body and make using it more stressful.

The "Lava Z4 (2021) 64GB" weighs 190.0g. The "Lava Z91 (2018) 32GB" clocks in at 147.0g. If you compare the weight of the two, the "Lava Z91 (2018) 32GB" is a considerably lighter smartphone than the "Lava Z4 (2021) 64GB", with a difference of about 43g. Because of this, the "Lava Z91 (2018) 32GB" puts less of a burden on the fingers and wrists than the "Lava Z4 (2021) 64GB". If you want a smartphone that won't tire your hands out even when using it for a long time, we recommend that you buy the "Lava Z91 (2018) 32GB" rather than the "Lava Z4 (2021) 64GB".

ScoreWeight
Lava Z4 (2021) 64GB54/100190.0g
Lava Z91 (2018) 32GB71/100147.0g

Which is better in terms of display, "Lava Z4 (2021) 64GB" or "Lava Z91 (2018) 32GB"?

Screen size influences how well you can control your device, as well as how clear the display is. With a large screen, the text and buttons in apps will display large enough so you'll be less likely to accidentally tap the button next to the one you were aiming for. Plus, you'll be able to enjoy more high-impact visuals for games and movies.

The screen size on the "Lava Z4 (2021) 64GB" is 6.51inch, and 5.7inch on the "Lava Z91 (2018) 32GB". Comparing the size of the display and screen, the screen size of the "Lava Z4 (2021) 64GB" is larger than that of the "Lava Z91 (2018) 32GB", with a difference of approximately 0.8inch. As a result, there will be unintended touches on the "Lava Z4 (2021) 64GB" compared to the "Lava Z91 (2018) 32GB" and it is possible to enjoy games and videos on a large screen. For this reason, the "Lava Z4 (2021) 64GB" is recommended.

ScoreDisplay size
Lava Z4 (2021) 64GB90/1006.51inch
Lava Z91 (2018) 32GB85/1005.7inch

Which one has a better display, "Lava Z4 (2021) 64GB" or "Lava Z91 (2018) 32GB"?

Pixel density influences how nice your device's screen looks, with high pixel densities making screens look more beautiful, and letting you get more out of your games and movies. Plus, the nicer you screen looks, the less strain you'll be putting on your eyes, so you'll tend to be able to use your device for longer before your eyes get tired.

The screen on the "Lava Z4 (2021) 64GB" has a 720 x 1600 resolution and a pixel density of 269ppi. The "Lava Z91 (2018) 32GB", on the other hand, has a screen resolution of 720 x 1440 and a pixel density of 282ppi. There is not much of a difference in the pixel resolutions of the "Lava Z4 (2021) 64GB" and "Lava Z91 (2018) 32GB", so they are about the same in terms of clarity of image and gentleness on the eyes. For this reason it is better to compare them based on other aspects of performance and function.

ScorePixel density
Lava Z4 (2021) 64GB54/100269ppi
Lava Z91 (2018) 32GB57/100282ppi

How is the battery duration of "Lava Z4 (2021) 64GB" different from that of "Lava Z91 (2018) 32GB" ? See the differences

Battery performance has a big effect on the battery life of your device. However, a high battery capacity doesn't necessarily mean a long battery life. Rather, the rate of power consumption needs to be taken into consideration as well. The larger the screen and the higher the CPU performance, the higher the rate of power consumption on your battery.

ScoreBattery capacity
Lava Z4 (2021) 64GB - /100
Lava Z91 (2018) 32GB65/1003000.0mAh

Which is better in terms of CPU function, "Lava Z4 (2021) 64GB" or "Lava Z91 (2018) 32GB"?

Your CPU's speed will influence the processing power of the applications you run, and together with the number of cores in the CPU, as well as its clock frequency, will determine the processing power available for apps. The higher these performance factors, the smoother your games and apps will run. Conversely, if these factors are too low, your apps and games will be sluggish and struggle to run.

The "Lava Z4 (2021) 64GB" is equipped with a MediaTek Helio G35 processor, and its performance speed is 2.3GHz+1.8GHz×8(8.0-cores). The "Lava Z91 (2018) 32GB" uses an Mediatek MT6739 CPU that performs at a speed of 1.3GHz×4(4.0-cores). Comparing CPU performance, the "Lava Z4 (2021) 64GB" has significantly higher specs than the "Lava Z91 (2018) 32GB". The "Lava Z4 (2021) 64GB" proves to be more advanced than the "Lava Z91 (2018) 32GB" in the way that apps run quickly and games play smoothly. If you're looking for a high-spec smartphone that runs quickly and plays games smoothly, we recommend that you buy the "Lava Z4 (2021) 64GB" rather than the "Lava Z91 (2018) 32GB".

ScoreCPU specs
Lava Z4 (2021) 64GB88/1002.3GHz+1.8GHz×8(8.0-cores)
Lava Z91 (2018) 32GB50/1001.3GHz×4(4.0-cores)

How is "Lava Z4 (2021) 64GB" different from "Lava Z91 (2018) 32GB" in terms of memory capacity?

Your device's multimedia performance and app stability are both influenced by the amount of memory it has available. The more memory, the more apps you can use simultaneously, while keeping everything stable and smooth. Plus, there'll be less chance of animations lagging or apps crashing. You also need to keep in mind that some games won't run at all if there's not enough memory available.

The "Lava Z4 (2021) 64GB" has 4.0GB of memory. The "Lava Z91 (2018) 32GB", on the other hand, has 3.0GB. As for memory performance, the "Lava Z4 (2021) 64GB" has a larger memory capacity than the "Lava Z91 (2018) 32GB", with a difference of about 1GB. The "Lava Z4 (2021) 64GB" has better multitasking, less crashing, and runs 3D games and VR video better than the "Lava Z91 (2018) 32GB". If you're looking for a smartphone that will remain stable even when you are using multiple apps at the same time, and which will allow you to play 3D games and VR video comfortably, we recommend that you buy the "Lava Z4 (2021) 64GB" rather than the "Lava Z91 (2018) 32GB".

ScoreRAM size
Lava Z4 (2021) 64GB70/1004.0GB
Lava Z91 (2018) 32GB60/1003.0GB

Which has a better storage capacity, "Lava Z4 (2021) 64GB" or "Lava Z91 (2018) 32GB"?

Storage capacity determines the amount of data you'll be able to save on your device. The more storage you have, the more photos you can take and the more apps you can install. Plus, if your smartphone is compatible with SD cards, then you can increase the amount of available storage. However, SD cards have a slower writespeed, making them less desirable in terms of performance, and users should be aware that it won't be possible to transfer all kinds of data to the card.

The "Lava Z4 (2021) 64GB" has 64.0GB of storage, while the "Lava Z91 (2018) 32GB" has 32.0GB. In terms of ROM and data storage, the "Lava Z4 (2021) 64GB" has a much larger capacity than the "Lava Z91 (2018) 32GB", with a difference of about 32GB. The "Lava Z4 (2021) 64GB" can save more photos and keep more apps installed than the "Lava Z91 (2018) 32GB". If you're searching for a smartphone that can store more data, we recommended that you buy the "Lava Z4 (2021) 64GB" rather than the "Lava Z91 (2018) 32GB".

ScoreStorage size
Lava Z4 (2021) 64GB67/10064.0GB
Lava Z91 (2018) 32GB55/10032.0GB

Compare the rear cameras of "Lava Z4 (2021) 64GB" and "Lava Z91 (2018) 32GB". Which one has better picture quality?

One factor in how well your rear camera (the camera on the back of your device) performs is its megapixel count. With a higher megapixel count, you'll be able to take photos with sharper detail, photos that stay clear and sharp even when printed.

The main camera on the "Lava Z4 (2021) 64GB" has 13.0MP. The "Lava Z91 (2018) 32GB" has 13.0MP. The rear facing cameras of the "Lava Z4 (2021) 64GB" and "Lava Z91 (2018) 32GB" have roughly the same performance, so the quality of the photograph and video footage they can capture is around the same. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreRear-camera resolution
Lava Z4 (2021) 64GB61/10013.0MP
Lava Z91 (2018) 32GB61/10013.0MP

Which has a front camera with better picture quality, "Lava Z4 (2021) 64GB" or "Lava Z91 (2018) 32GB"?

One indication of how well your forward facing camera (the camera on the same side as your device's screen) performs is how many megapixels it has. More megapixels means you'll be able to take photos with sharper detail, that still look amazing printed out.

The forward-facing camera on the "Lava Z4 (2021) 64GB" has a resolution of 16.0MP. The "Lava Z91 (2018) 32GB"'s has 8.0MP. The front-facing camera of the "Lava Z4 (2021) 64GB" has a significantly higher number of pixels than the "Lava Z91 (2018) 32GB", with a difference of about 8MP. Therefore, the "Lava Z4 (2021) 64GB" is more suitable for taking photos and videos than the "Lava Z91 (2018) 32GB". If you want to take and print high-quality selfies, we recommend buying the "Lava Z4 (2021) 64GB" rather than the "Lava Z91 (2018) 32GB".

ScoreFront-camera resolution
Lava Z4 (2021) 64GB75/10016.0MP
Lava Z91 (2018) 32GB58/1008.0MP

Compare Performance Specs

Lava Z4 (2021) 64GBLava Z91 (2018) 32GB
ImageLava Z4 (2021) 64GBLava Z91 (2018) 32GB
MakerLavaLava
Release date2021-01-112018-03
ColorBlue/RedBlue
OSAndroidAndroid
Dimensions (width x height x thickness)75.8mm x 164.5mm x 9.0mm72.9mm x 152.0mm x 7.7mm
Weight190.0g147.0g
Display size6.51inch5.7inch
Display typeIPS LCDIPS LCD
Screen resolution (width x height)720 x 1600720 x 1440
Pixel density269ppi282ppi
ChipsetMediaTek Helio G35Mediatek MT6739
CPU specs2.3GHz+1.8GHz×8(8.0-cores)1.3GHz×4(4.0-cores)
RAM size4.0GB3.0GB
Storage size64.0GB32.0GB
Rear-camera resolution13.0MP13.0MP
Front-camera resolution16.0MP8.0MP

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