Xiaomi

Xiaomi Redmi K40 Pro: Pros and Cons

Android OS v11.0
Qualcomm Snapdragon 888
Adreno 660
6 GB / 128 GB
6.67 inch (1080 x 2400 px)
64 + 8 + 5 MP, 9280 x 6920 px, autofocus, optical image stabilization

Xiaomi announced the launch of the Redmi K40 Pro smartphone in 2021. The manufacturer is offering this smartphone with 6.67 inch AMOLED display, Qualcomm Snapdragon 888 SoC, and 6 GB of RAM. It comes with Android OS v11.0 out of the box, and a Li-Po 4520 mAh, non-removable battery. The phone comes with a high-quality AMOLED display. The Redmi K40 Pro has a multi-camera setup. The lens offers versatility. It lets you capture a wide range of subjects and scenes from different perspectives. Is this phone a good value for its price? My review aims to answer that question by the end.

Table of Contents

This article shares our personal experiences and thoughts about using the Xiaomi Redmi K40 Pro smartphone. We hope to offer helpful insights to others interested in this device. The specifications below are from the official manufacturer data, but we also consider user reviews. If you've seen any mistakes or things missing in these specifications, please let us know.

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Xiaomi Redmi K40 Pro specifications

BrandXiaomi
NameRedmi K40 Pro
ModelM2012K11C
Release date2021

Weight, dimensions, colors

Weight6.91 oz
Dimensions6.44 x 3.01 x 0.31 inch
Colorsblack, dream, white
SIM typeNano SIM

The weight of Xiaomi Redmi K40 Pro is about 6.91 oz with battery. This is average for smartphones of the same size. Smartphones use a Nano SIM as a small chipcard for a subscriber identity module (SIM).

Xiaomi Redmi K40 Pro / 1

System, chipset, performance

OS versionAndroid OS v11.0
SoCQualcomm Snapdragon 888
CPUOcta-core, Single-core 2.84 GHz Kryo 680, Triple-core 2.4 GHz Kryo 680, Quad-core 1.8 GHz Kryo 680
GPUAdreno 660

The Xiaomi Redmi K40 Pro comes with Android OS v11.0 out of the box. The Android operating system uses the Linux kernel as its foundation. It includes a user interface, middleware, and many pre-installed applications. It's a powerful Qualcomm Snapdragon 888 octa-core processor. It can handle complex tasks and run many applications. Qualcomm's Snapdragon processors work with Adreno GPUs. The processors are designed for the GPUs.

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Display type, size, resolution

Display typeAMOLED
Screen size6.67 inch
Resolution1080 x 2400 px
Multitouch supportyes

The 6.67 inch phone comes with AMOLED display. Smartphones use the AMOLED, which is a type of OLED display. The 6.67 inch display should be big enough for your needs. It will make viewing comfortable. This is true whether you're reading, browsing, or watching. The size of the screen is measured diagonally, from corner to corner.

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Memory, storage

RAM6 GB
Internal storage128 GB
Memory card slotmicroSD

The Xiaomi Redmi K40 Pro comes with 6 GB of RAM, which is considered to be sufficient for most users' needs. The needed RAM amount for good performance depends on factors. These include the OS, the apps, and the services you use. The Redmi K40 Pro has 128 GB of internal storage, which is more than enough for their needs. You can expand the internal storage (128 GB) with a compatible microSD card.

Cameras, flash

Main camera64 + 8 + 5 MP, 9280 x 6920 px, autofocus, optical image stabilization
FlashDual LED
Selfie camera20 MP

The Redmi K40 Pro has a multi-camera setup. It lets you adapt to different photography situations. You can achieve various perspectives and compositions. The main camera of Redmi K40 Pro has optical image stabilization (OIS). It counters camera shake.

Connectivity, network, wireless

GSM 2G bands850 / 900 / 1800 / 1900
Network coverage2G / 3G / 4G / 5G
Wi-FiWi-Fi 802.11 a/b/g/n/ac
Bluetoothv5.2, A2DP
GPSA-GPS
NFCyes
FM radioyes
USBUSB Type-C
Headphoneno

The designers of the 5G network aim to increase speed. They also want to reduce delay and improve flexibility of wireless services. This phone like all modern smartphones, is capable of connecting to Wi-Fi networks. The Redmi K40 Pro smartphone is capable of connecting to Bluetooth devices. This phone has a built-in GPS. The Redmi K40 Pro has a built-in NFC chip, which allows it to support various NFC applications and services. The Redmi K40 Pro smartphone does not have 3.5 mm headphone jack.

Battery type, capacity, charger

TypeLi-Po 4520 mAh, non-removable

The Li-Po 4520 mAh, non-removable battery gives the smartphone a good battery backup. The lithium polymer (Li-Po) battery is a light-weight, rechargeable battery. The battery of Redmi K40 Pro isn't removable without voiding the warranty.

Features, sensors, specials

Sensorsaccelerometer, color temperature sensor, compass, fingerprint, geomagnetic, gravity, gyroscope, light, pedometer, ultrasonic distance sensor, x-axis linear motor
SpecialsCorning Gorilla Glass 5, Dual SIM, Fast charging, Hi-Res Audio, MIUI

Today, smartphones come with many sensors. They help make the user experience better. The Redmi K40 Pro smartphone has an accelerometer. The Redmi K40 Pro phone has a fingerprint scanner. The light sensor detects the level of light in the environment. Dual SIM is great for businesses. They want to give staff a device with separate numbers and bills for personal and business use. The fast charging technology comes in handy when you need quick juice on your device. Corning Gorilla Glass is a type of chemically strengthened super-glass.

Verdict, pros and cons

Every phone has its strengths and weaknesses, and this Xiaomi 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

  • AMOLED display
  • appropriate screen size
  • adequate memory
  • generous internal storage
  • microSD slot
  • multicamera setup
  • optical image stabilization (OIS)
  • 5G support
  • Dual SIM support
  • Corning Gorilla Glass shield

Cons

  • no headphone jack
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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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