Microsoft Lumia 640 LTE Dual SIM

OS: Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10

CPU: Quad-core 1.2 GHz Cortex-A7

Display: 5" inc

Camera: 8 MP, Single

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Microsoft Lumia 640 LTE Dual SIM smartphone runs on Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10 operating system. The phone is powered by Quad-core 1.2 GHz Cortex-A7 processor. It has 8 GB, 1 GB RAM. Internal storage options which can be extended with the help of microSD, up to 256 GB (dedicated slot). The smartphone has a IPS LCD providing, Screen-to-Body Ratio of 67.6%. The smartphone is fueled with a 2500 mAh, Removable Li-Ion. The main camera of the smartphone consists of a 8 MP, Single. The sensors include Accelerometer, proximity, compass. Connectivity features in the smartphone include Bluetooth, A-GPS, GLONASS, BDS, Wi-Fi, NFC, 3.5 mm Jack and more. The Microsoft Lumia 640 LTE Dual SIM are available in various colors such as Glossy cyan, Orange, White, Matte black. It measures 141.3 x 72.2 x 8.8 mm and weighs 145 g.

Hardware and OS Microsoft Lumia 640 LTE Dual SIM
Operating system:	Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Processor:	Quad-core 1.2 GHz Cortex-A7
Chipset:	Qualcomm MSM8926 Snapdragon 400 (28 nm)
GPU:	Adreno 305
Internal memory:	8 GB, 1 GB RAM
External memory:	microSD, up to 256 GB (dedicated slot)
Display Microsoft Lumia 640 LTE Dual SIM
Type:	IPS LCD
Size:	5" inc
Resolution:	720 x 1280 px
Protection:	Corning Gorilla Glass 3
Touchscreen:	capacitive touchscreen
Screen-to-Body Ratio:	67.6%
Display area:	68.9 cm²
Display aspect ratio:	16:9 (height:width)
Pixel Density:	294 PPI
Colors:	16M
Other:	ClearBlack display
Connectivity Microsoft Lumia 640 LTE Dual SIM
2G Network:	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network:	HSDPA 850 / 900 / 1700 / 1900 / 2100
4G Network:	LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20(800), 28(700), 38(2600), 40(2300)
Wi-Fi:	Wi-Fi 802.11 b/g/n, DLNA, hotspot
Network:	GSM / HSPA / LTE
SIM card:	Dual SIM (Micro-SIM, dual stand-by)
Bluetooth:	4.0, A2DP
Edge:	Yes
GPRS:	Yes
GPS:	Yes, with A-GPS, GLONASS, BDS
NFC:	Yes
Speed:	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
USB:	microUSB 2.0
Camera Microsoft Lumia 640 LTE Dual SIM
Main camera:	8 MP, Single
Specs:	8 MP, f/2.2, 28mm (wide), 1/4', AF
Features:	LED flash
Video:	1080p@30fps
Selfie camera:	1 MP, Single
Specs:	1 MP
Video:	720p
Multimedia Microsoft Lumia 640 LTE Dual SIM
3.5 mm Jack:	Yes
Radio:	FM radio
Design Microsoft Lumia 640 LTE Dual SIM
Colors:	Glossy cyan, Orange, White, Matte black
Dimensions:	141.3 x 72.2 x 8.8 mm
Weight:	145 g
Battery Microsoft Lumia 640 LTE Dual SIM
Battery capacity:	2500 mAh, Removable Li-Ion
Battery life:	Stand by time- Up to 864 h (2G) / Up to 864 h (3G) Talking time- Up to 26 h 30 min (2G) / Up to 17 h 30 min (3G)
Other Microsoft Lumia 640 LTE Dual SIM
Release date:	2015, March
Sensors:	Accelerometer, proximity, compass

Microsoft Lumia 640 LTE Dual SIM Overview

The Microsoft Lumia 640 LTE Dual SIM is a budget-friendly smartphone that offers a range of features for everyday use. Running on Microsoft Windows Phone 8.1, with the option to upgrade to Windows 10, this device provides a smooth and user-friendly interface.

Powered by a Quad-core 1.2 GHz Cortex-A7 processor and Qualcomm MSM8926 Snapdragon 400 chipset, the Lumia 640 delivers decent performance for its price point. The Adreno 305 GPU ensures smooth graphics for gaming and multimedia content.

With 8 GB of internal storage and 1 GB of RAM, users have enough space to store their apps, photos, and videos. Additionally, the microSD card slot allows for expandable storage up to 256 GB.

The 5-inch IPS LCD display with a resolution of 720 x 1280 pixels and Corning Gorilla Glass 3 protection provides a crisp and clear viewing experience. The ClearBlack display technology enhances visibility in bright outdoor conditions.

The 8 MP main camera with LED flash captures decent quality photos, while the 1 MP front-facing camera is suitable for selfies and video calls. The device also supports Full HD video recording.

Connectivity options include Wi-Fi, Bluetooth 4.0, NFC, GPS, and 4G LTE support. The dual SIM capability allows users to manage two phone numbers simultaneously.

The 2500 mAh removable battery provides enough power for all-day use, with up to 26 hours and 30 minutes of talk time on 2G networks.

Pros:
- Affordable price
- Smooth performance
- Expandable storage
- Decent camera quality
- Dual SIM capability

Cons:
- Limited internal storage
- Low-resolution front camera
- Outdated operating system (Windows Phone 8.1)