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Lava

Lava Z91 (2018)

Android OS v7.0 (Nougat)
Mediatek MT6739
PowerVR GE8100
3 GB / 32 GB
5.7 inch (720 x 1440 px)
13 MP, 4160 x 3120 px, autofocus

This phone boasts a 5.7 inch IPS display, a Mediatek MT6739 chipset, and 3 GB of RAM.

Explore its upsides and downsides!

Table of Contents

This article shares our personal experiences and thoughts about using the Lava Z91 smartphone. We hope to offer helpful insights to others interested in this device.

Lava Z91 / 1

Lava Z91 specifications

BrandLava
NameZ91
ModelZ91
Release date2018

Weight, dimensions, colors

Weight5.19 oz
Dimensions5.99 x 2.87 x 0.3 inch
Colorsblack, blue
SIM typeNano SIM

The weight of the Lava Z91 is still considered to be lightweight and portable. Smartphones use a Nano SIM as a subscriber identity module (SIM), which is a chip card.

Lava Z91 / 1

System, chipset, performance

OS versionAndroid OS v7.0 (Nougat)
SoCMediatek MT6739
CPUQuad-core 1.3 GHz Cortex-A53
GPUPowerVR GE8100

The Lava Z91 comes with Android OS v7.0 (Nougat) out of the box. Android is an open-source operating system. This means users and developers have more control over the software. The quad-core mobile CPU can provide fast and efficient performance for mobile games. Many consider PowerVR GPUs to highly compete with other leading mobile GPUs.

Lava Z91 / 2

Display type, size, resolution

Display typeIPS
Screen size5.7 inch
Resolution720 x 1440 px
Multitouch supportyes

People know IPS for its wide viewing angles. It also has accurate color reproduction. The 5.7 inch display make this smartphone pocket-friendly. The display size is the diagonal distance from one corner of the screen to the opposite corner.

Lava Z91 / 3

Memory, storage

RAM3 GB
Internal storage32 GB
Memory card slotmicroSD

The smartphone has 3 GB of RAM. It can run many apps at once without much lag or slowness. More RAM lets us keep more apps and processes open in the background. This keeps the device from slowing down. Generally, a smartphone should have a minimum of 32 GB of internal storage. The Z91 has 32 GB. We can expand the internal storage of the Z91 (32 GB) by using a compatible microSD card.

Lava Z91 / 4

Cameras, flash

Main camera13 MP, 4160 x 3120 px, autofocus
FlashLED
Selfie camera8 MP

This single camera can be enough for many smartphone users, it depends on their photography needs and preferences. The main camera of Z91 smartphone does not have OIS. The optical image stabilization (OIS) is an important feature in smartphones.

Lava Z91 / 5

Connectivity, network, wireless

GSM 2G bands900 / 1800
Network coverage2G / 3G / 4G
Wi-FiWi-Fi 802.11 b/g/n
Bluetoothv4.0, A2DP
GPSA-GPS
NFCno
FM radioyes
USBmicroUSB 2.0
Headphone3.5 mm jack

The 4G provides faster data transfer speeds compared to previous generations. This Lava phone can connect to Wi-Fi networks at home, at work, or in public places. We can use Bluetooth to connect our Z91 smartphone to many Bluetooth devices. This phone has a built-in GPS receiver. The phone isn't NFC (Near Field Communication) capable. NFC is not essential for basic phone functionality, but it can be useful. The 3.5 mm headphone jack allows us to connect wired headphones or earphones to the device.

Battery type, capacity, charger

TypeLi-Ion 3000 mAh, non-removable

The Li-Ion 3000 mAh, non-removable battery gives the smartphone a good battery backup. The Li-ion is a low maintenance battery. It does not need periodic full discharge. The Z91 does not have a removable battery, it integrates the battery into the phone's design.

Features, sensors, specials

Sensorsaccelerometer, fingerprint, light, proximity
SpecialsDual SIM, Star OS

Today, smartphones come with many sensors. They help make the user experience better. The accelerometer is a sensor. It measures the tilting motion and orientation of the phone. The fingerprint reader is a biometric security feature found in Z91 smartphones. The light sensor is a type of sensor in a smartphone. It lets the phone measure light intensity around the device. Dual SIM is great for businesses. They want to give staff a device with separate numbers and bills for personal and business use.

Verdict, pros and cons

Every phone has its strengths and weaknesses, and this Lava phone is no exception. As with any device, there are aspects that shine and others that fall short. By examining both sides, we can paint a complete picture of what this phone has to offer. Let's explore its standout features and areas for improvement. Remember, this is just my opinion, and yours might be different.

Pros

  • microSD slot
  • Dual SIM support

Cons

  • single camera setup
  • no OIS function
  • no 5G support
  • no NFC feature
  • no Type-C USB port
  • low-capacity battery
  • no digital compass
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Lucas Bradley I'm Lucas Bradley, the founder of the Phone42.com site. I love technology, especially smartphones, and I've been working with tech stuff for more than 20 years. This means I've seen a lot of changes and have learned a bunch about what makes a good phone. On Phone42.com, I look at all kinds of phones. They can be from big, well-known companies or new ones trying to make their mark. I want to help people understand what's new and cool in the world of smartphones, in a way that's easy to get.
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