Overall Score
54.5Category Breakdown
Overall(#5980)54.5
Performance(#7389)54.3
Camera(#5349)42.1
Display(#3791)70.5
Battery(#5432)43.5
Build(#4085)70.8
Comparisons Featuring Microsoft Lumia 640 Dual SIM
Short Review
- The Microsoft Lumia 640 Dual SIM features a compact design with dimensions of 141.3 x 72.2 x 8.8 mm and a weight of 145 grams, available in glossy cyan, orange, white, and matte black.
- It has a 5.0-inch IPS LCD display with a resolution of 720 x 1280 pixels, providing decent clarity at approximately 294 ppi.
- Powered by a Qualcomm Snapdragon 400 chipset and a quad-core 1.2 GHz Cortex-A7 CPU, the performance is adequate for basic tasks, supported by 1GB of RAM and 8GB of internal storage.
- The rear camera is an 8 MP unit with f/2.2 aperture, capable of recording 1080p video at 30fps, while the front camera is a 1 MP sensor.
- The battery capacity is 2500 mAh, which provides reasonable longevity but lacks fast or wireless charging options.
- Running on Microsoft Windows Phone 8.1, it can be upgraded to Windows 10, offering a familiar interface for users.
- Connectivity options include Wi-Fi 802.11 b/g/n and Bluetooth 4.0, but it does not support 5G or NFC.
- The device does not feature stereo speakers but includes a standard headphone jack.
- Overall, the Lumia 640 Dual SIM is a straightforward smartphone with essential features for everyday use.
Specifications
General
Release Date2015
Announced2015
DescriptionN/A
Display
Size5"
TypeIPS LCD
Resolution720 x 1280 pixels, 16:9 ratio (~294 ppi density)
PPI720
Refresh Rate60Hz
Peak BrightnessN/A
HDR Support✗
ProtectionCorning Gorilla Glass 3
Performance
ChipsetQualcomm MSM8926 Snapdragon 400 (28 nm)
CPUQuad-core 1.2 GHz Cortex-A7
GPUAdreno 305
Memory8GB 1GB RAM
Expandable Storage✗
Card SlotmicroSDXC (dedicated slot)
Camera
Main Camera8 MP
Main Camera Details8 MP, f/2.2, 28mm (wide), 1/4.0", AF
Front Camera1 MP
Front Camera Details1 MP
Video Recording1080p@30fps
Selfie Video720p
OIS✗
Night Mode✗
RAW Support✗
Battery
Capacity2500 mAh
Battery DetailsLi-Ion 2500 mAh, removable
Charging DetailsN/A
Fast Charging✗
Wireless Charging✗
Build & Design
Dimensions141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in)
Weight145 g
MaterialsN/A
Water ResistanceN/A
ColorsGlossy cyan, Orange, White, Matte black
Foldable✗
Connectivity
SIMDual SIM (Micro-SIM, dual stand-by)
NetworkGSM / HSPA
Network SpeedHSPA 42.2/5.76 Mbps
5G✗
4G✗
WiFiWi-Fi 802.11 b/g/n, DLNA, hotspot
Bluetooth4.0, A2DP
NFC✗
USBmicroUSB 2.0
IR Blaster✗
Headphone Jack✓
Radio✗
PositioningGPS, GLONASS, BDS
Software
Operating SystemMicrosoft Windows Phone 8.1, upgradable to Microsoft Windows 10
OS VersionMicrosoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Security
Fingerprint✗
Face Unlock✗
SensorsAccelerometer, proximity, compass
Audio
Stereo Speakers✗
LoudspeakerYes
Audio JackYes