Microsoft Lumia 640 Dual: Pros and Cons
Microsoft announced the launch of the Lumia 640 Dual smartphone in 2015. The manufacturer is offering this smartphone with 5 inch IPS display, Qualcomm Snapdragon 400 MSM8926 SoC, and 1 GB of RAM. The Lumia 640 Dual series was launched with Microsoft Windows 8.1 pre-installed, but it is upgradable. This phone features a high resolution 720 x 1280 px IPS display. The size of screen is 5 inch. This smartphone has a single camera on the back (8 MP, 3264 x 2448 px, autofocus). Let's dive into what makes this device unique.
Table of Contents
- Microsoft Lumia 640 Dual specifications
- Weight, dimensions, colors
- System, chipset, performance
- Display type, size, resolution
- Memory, storage
- Cameras, flash
- Connectivity, network, wireless
- Battery type, capacity, charger
- Features, sensors, specials
- Verdict, pros and cons
This article shares our personal experiences and thoughts about using the Microsoft Lumia 640 Dual 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.
Microsoft Lumia 640 Dual specifications
Brand | Microsoft |
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Name | Lumia 640 Dual |
Model | L640D |
Release date | 2015 |
Weight, dimensions, colors
Weight | 5.11 oz |
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Dimensions | 5.56 x 2.84 x 0.35 inch |
Colors | glossy cyan, matte black, orange, white |
SIM type | Micro SIM |
The weight of Microsoft Lumia 640 Dual is about 5.11 oz with battery. This is average for smartphones of the same size. A micro SIM is a smaller version of the standard SIM card used in mobile devices.
System, chipset, performance
OS version | Microsoft Windows 8.1 |
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SoC | Qualcomm Snapdragon 400 MSM8926 |
CPU | Quad-core 1.2 GHz Cortex-A7 |
GPU | Adreno 305 |
The Microsoft Lumia 640 Dual comes with Microsoft Windows 8.1 out of the box. The mid-range CPU can deliver fast, efficient performance for many tasks. Qualcomm's Snapdragon processors work with Adreno GPUs. The processors are designed for the GPUs.
Display type, size, resolution
Display type | IPS |
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Screen size | 5 inch |
Resolution | 720 x 1280 px |
Multitouch support | yes |
The 5 inch IPS display has better features. These include optimal viewing angles, color accuracy, and unchanging color reproduction. The 5 inch display make this smartphone pocket-friendly. The size of the screen is measured diagonally, from corner to corner.
Memory, storage
RAM | 1 GB |
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Internal storage | 8 GB |
Memory card slot | microSD |
1 GB of RAM is not typically considered to be enough for a smartphone. The needed RAM amount for good performance depends on factors. These include the OS, the apps, and the services you use. Most people think a smartphone needs at least 32 GB of storage. The Lumia 640 Dual has only 8 GB. You can expand the internal storage (8 GB) with a compatible microSD card.
Cameras, flash
Main camera | 8 MP, 3264 x 2448 px, autofocus |
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Flash | LED |
Selfie camera | 1 MP |
The single camera can be enough for many smartphone users. It depends on their photography needs and preferences. The Lumia 640 Dual comes with a basic camera setup and lacks any advanced features.
Connectivity, network, wireless
GSM 2G bands | 850 / 900 / 1800 / 1900 |
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Network coverage | 2G / 3G |
Wi-Fi | Wi-Fi 802.11 b/g/n |
Bluetooth | v4.0, A2DP |
GPS | A-GPS, GLONASS, Beidou |
NFC | no |
FM radio | yes |
USB | microUSB 2.0 |
Headphone | 3.5 mm jack |
The 3G is obsolete now, because most phones can use 4G and 5G networks. The phone is capable of connecting to Wi-Fi networks. The Lumia 640 Dual smartphone is capable of connecting to Bluetooth devices. The GPS allows this smartphone to find their exact location. It provides accurate navigation and mapping. 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 you to connect wired headphones or earphones to the device.
Battery type, capacity, charger
Type | Li-Ion 2500 mAh |
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The Li-Ion 2500 mAh battery gives the smartphone a good battery backup. The Li-ion is a low maintenance battery. It does not need periodic full discharge. You can simply buy a new battery from the open market and interchange it by yourself.
Features, sensors, specials
Sensors | accelerometer, compass, proximity |
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Specials | Corning Gorilla Glass 3, Dual SIM |
Today, smartphones come with many sensors. They help make the user experience better. The Lumia 640 Dual smartphone has an accelerometer. Dual SIM is great for businesses. They want to give staff a device with separate numbers and bills for personal and business use. Corning Gorilla Glass is a type of chemically strengthened super-glass.
Verdict, pros and cons
Every phone has its strengths and weaknesses, and this Microsoft 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
- Corning Gorilla Glass shield
Cons
- limited-size screen
- insufficient memory
- insufficient internal storage
- single camera setup
- no OIS function
- no 4G support
- no 5G support
- no NFC feature
- no Type-C USB port
- low-capacity battery
- no fingerprint reader
Please let us know if you find incorrect information or something isn't working. Also, tell us if you have a suggestion for improvement.