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Microsoft Lumia 640 (Dual-Sim 3G) vs Xiaomi Redmi Note 4 (MTK 64GB/4GB)

Side by side comparison between Microsoft Lumia 640 vs Xiaomi Redmi Note 4 phones, differences, pros, cons and full specifications. What's the better?

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Compare Xiaomi Redmi Note 4 X Microsoft Lumia 640 (Dual-Sim 3G) 05Points
Microsoft Lumia 640 (Dual-Sim 3G)
Specifications Compare Models Pictures
5"
IPS

720x1280

8
MP

1mp

1GB
RAM

Quad-core

2500
mAh

(Removable)

vs
21Points Xiaomi Redmi Note 4 (MTK 64GB/4GB) Compare Microsoft Lumia 640 X
Xiaomi Redmi Note 4 (MTK 64GB/4GB)
Specifications Compare Models Pictures
5.5"
IPS

1080x1920

13
MP

5mp

4GB
RAM

Deca-core

4100
mAh

(Non removable)

What's the better phone? Xiaomi Redmi Note 4 (MTK 64GB/4GB)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

Lumia 640 (Dual-Sim 3G)} 5 Advantages Microsoft Lumia 640 (Dual-Sim 3G) vs Redmi Note 4 (MTK 64GB/4GB)} 21 Advantages Xiaomi Redmi Note 4 (MTK 64GB/4GB)
+145 grams (5.08 ounces)21%
Lighter		vs175 grams (6.13 ounces)
+Li-Ion: lithium-ion (Removable)Advantage
Removable battery can be replaced easily		vsLiPo: li-ion polymer (Non removable)
+2 slots (Dual-SIM)
(dedicated slot)Advantage
You can have more mobile carriers/operators on the same device.		vs2 slots (Dual-SIM)
(hybrid slot/shares the same microSD slot)
+DLNAAdvantage
With DLNA technology you can access and play media files on TV, tablet or DLNA compatible device.		vsNot supported
+Gorilla Glass 3Advantage
Protection against scratches on the screen lets you carry your phone with your keys		vsNot supported
1.2GHz 32bit Quad-corevs+2.1GHz 64bit Deca-core156%
More powerful processor, you can open your applications faster
1GB LPDDR2vs+4GB LPDDR33 times
More RAM memory. Typically more responsive and better for multitasking.
8GB (3GB available)vs+64GB (54GB available)17 times
More internal storage for applications and files
Until 128GB microSD, microSDXCvs+Until 256GB microSD, microSDXC100%
More external storage for files using memory cards
8.8 millimeters (0.35 inches)vs+8.35 millimeters (0.33 inches)5%
Thinner
720x1280 pixelsvs+1080x1920 pixels125%
Higher resolution screen
294 PPIvs+401 PPI36%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
5"vs+5.5"10%
Larger screen
(back) 8MPvs+(back) 13MP60%
Higher resolution main camera
LED flashvs+Dual-LED flashAdvantage
The Dual-LED flash helps in dark places or in low light
HDR photo only main cameravs+HDR photo on both camerasAdvantage
The HDR technology produced photos with more detail in dark areas
f/2.2 (aperture)vs+f/2.0 (aperture)10%
Diaphragm opening (Aperture) of the camera which has the smallest F number takes photos with better light exposure.
(front) 1MPvs+(front) 5MP4 times
Higher resolution secondary camera to take pictures and selfies
700000 apps (Marketplace)vs+3500000 apps (Google Play Store)4 times
More apps available to download and use
3G+ HSPA+vs+4G LTEAdvantage
The 4G LTE network is newer and faster
(3G+ HSPA+) 42 Mbpsvs+(4G LTE) 150 Mbps3 times
Faster for surfing the internet and download files
Not supportedvs+Fingerprint sensorAdvantage
Sensors help you use the device
Not supportedvs+GyroscopeAdvantage
Sensors help you use the device
2500 mAhvs+4100 mAh64%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
802.11 b/g/n [wifi4]vs+802.11 a/b/g/n/ac [wifi5]Advantage
WiFi 802.11 a/b/g/n/ac [wifi5] is newer and faster
4.0 + A2DPvs+4.2 + A2DPAdvantage
Bluetooth 4.2 + A2DP is newer and faster
22 Common items in both devices
TFT IPS LCD
16 million
Only digital zoom
Autofocus / PDAF: phase detection autofocus
BSI sensor
Full HD (1920x1080)
(front) HD (1280x720)
+15 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differences Clear highlight

πŸ“± Model features

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
ModelLumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
Other model namesMicrosoft Lumia 640 3G Dual Sim, Microsoft RM-1109ηΊ’η±³Note 4, Redmi Note 4 (MediaTek) Deca-Core, Xiaomi Nikel
Country or region availablefeature not registeredChinaHong Kong
China, Hong Kong
BrandMicrosoftXiaomi
Release date4/1/20158/1/2016
Depth8.8 millimeters (0.35 inches)8.35 millimeters (0.33 inches)
Size (width x height)72.2 x 141.3 millimeters (2.84 x 5.56 in)76 x 151 millimeters (2.99 x 5.94 in)
Weight145 grams (5.08 ounces)175 grams (6.13 ounces)
Build, materialsfeature not registeredAluminum body, glass front
Protection against water and othersNot supportedNot supported

πŸ“² Display

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
Display typeTFT IPS LCDTFT IPS LCD
Screen size5" inches5.5" inches
Screen-to-body ratio~67.6% (screen-to-body ratio)~72.7% (screen-to-body ratio)
Display resolution720x1280 pixels1080x1920 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)294 PPI401 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass 3Not supported
Refresh ratefeature not registeredfeature not registered
Display featuresfeature not registeredfeature not registered

πŸ€– Operating System

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
System versionWindows Phone 8.1Android 6.0.1 Marshmallow
Firmware updatefeature not registeredAndroid 7.0 Nougat
User Interfacefeature not registeredfeature not registered

βš™οΈ Processor

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
Chipset32bit: Qualcomm Snapdragon 400 MSM8926 (28nm)64bit: MediaTek MT6797 Helio X20 (20nm)
CPUQuad-core, 1 processor:
4x 1.2GHz ARM Cortex-A7 (Quad-core)		Deca-core, 3 processors:
2x 2.1GHz ARM Cortex-A72 (Dual-core)
4x 1.85GHz ARM Cortex-A53 (Quad-core)
4x 1.4GHz ARM Cortex-A53 (Quad-core)
GPU graphical controllerQualcomm Adreno 305 400MhzARM Mali-T880 MP4 780Mhz
Performance (benchmark)feature not registeredfeature not registered

πŸ’½ Memory and storage

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
RAM memory1GB LPDDR24GB LPDDR3
Internal storage8GB (3GB available)64GB (54GB available)
External storageUntil 128GB microSD, microSDXC
(dedicated slot)		Until 256GB microSD, microSDXC
(hybrid slot/shares the same SIM-2 slot)

πŸ“Ά Mobile networks

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
Dual-SIMDual-SIM Standby - Call active on one sim card
(dedicated slot)		Dual-SIM Standby - Call active on one sim card
(hybrid slot/shares the same microSD slot)
SIM card2 slots (Dual-SIM)
micro-SIM (3FF)		2 slots (Dual-SIM)
micro-SIM (3FF) and nano-SIM (4FF)
Maximum Download / Upload42/5.76 Mbps150/50 Mbps
Network technology2G, 3G2G, 3G, 4G
Frequency, bands Expand band details Collapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900CDMA 800/1900, GSM 850/900/1800/1900
Primary 3G networkUMTS 850/900/1900/2100CDMA2000 1xEV-DO
TD-SCDMA 1900/2000
UMTS 850/900/1900/2100
Primary 4G networkNot supportedLTE Cat4 850/900/1800/2100/2600 (Bands 1,3,5,7,8)
TD-LTE 1900/2300/2500/2600 (Bands 38,39,40,41)
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE
Secondary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Secondary 3G networkNot supportedUMTS 850/900/1900/2100
Secondary 4G networkNot supportedNot supported
Secondary data networkGPRS, EDGEGPRS, EDGE

πŸ“· Camera

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
Back camera (main camera)8 megapixels13 megapixels
Main camera resolution3264x2448 pixels4128x3096 pixels
Video recording (primary)Full HD (1920x1080) 30 fpsFull HD (1920x1080) 30 fps
FlashLED flashDual-LED flash
Focal aperturef/2.2 (aperture)f/2.0 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor size1/4" inchesfeature not registered
Pixel sizefeature not registered1.12Β΅m pixel
AutofocusAutofocusPDAF: phase detection autofocus
Touch focusSupportedSupported
Image stabilizationfeature not registeredEIS: Digital stabilization
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionFace detectionFace detection, Smile detection
BSI sensorSupportedSupported
HDRHDR photo only main cameraHDR photo on both cameras
Camera extrasfeature not registeredfeature not registered

πŸ“Έ Front camera

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
Front camera (secondary)1 megapixels5 megapixels
Front camera resolution1280x720 pixels2592x1944 pixels
Video recording (secondary)HD (1280x720)HD (1280x720)
Front flashNot supportedNot supported
Focal aperturefeature not registeredf/2.0 (aperture)
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered

πŸ”‰ Sound and multimedia

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
LoudspeakerSupportedSupported
Active noise cancellation2 microphones or more2 microphones or more
RadioFMFM
TVNot supportedNot supported
Video formatsMP4, H.264, H.263, WMVMP4, H.265, H.264, H.263, XviD
Audio formatsMP3, WAV, WMA, eAAC+MP3, OGG, eAAC+, FLAC

πŸ”Œ Connectivity

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
USBMicroUSB 2.0MicroUSB 2.0
Audio output3.5mm jack3.5mm jack
TV outputNot supportedNot supported
Bluetooth4.0 + A2DP4.2 + A2DP
WiFi802.11 b/g/n [wifi4] (2.4GHz)802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO
WiFi Direct, hotspot
DLNASupportedNot supported
GPSA-GPS, GeoTagging, GLONASSA-GPS, GeoTagging, GLONASS, BeiDou
NFCNot supportedNot supported
Infrared portNot supportedSupported

🧭 Sensors

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
SensorsAccelerometer
Ambient light sensor
Compass
Proximity sensor		Accelerometer
Ambient light sensor
Compass
Fingerprint sensor
Gyroscope
Hall effect
Proximity sensor
Vibrating alertSupportedSupported

πŸ”‹ Battery

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
Battery typeLi-Ion: lithium-ion (Removable)LiPo: li-ion polymer (Non removable)
Battery capacity2500 mAh4100 mAh
Charger, wattsWired chargingWired charging
Inductive / wireless chargingfeature not registeredfeature not registered
Talk time autonomy20 hoursfeature not registered
Standby840 hours (35 days)feature not registered

βž• Other features

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
Call controlVoice dialing, Voice recorderVoice dialing, Voice recorder, Voice commands
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, HTML5HTML, XHTML, HTML5
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedNot supported
Miscellaneousβ€’ Colors: Black
β€’ Lumia Denim UI
β€’ Microsoft ClearBlack display
β€’ OneDrive 30GB
β€’ Beidou GPS
β€’ WiFi hotspot		β€’ Colors: Black, Silver, Gray, Gold, Blue
β€’ USB OTG On-The-Go
β€’ Aluminum body
β€’ 2.5D curved glass
β€’ MIUI 8.0
β€’ 720p@120fps slow-motion
β€’ 24-bit/192kHz audio
β€’ WiFi display

☒️ Radiation rate

Microsoft Lumia 640 (Dual-Sim 3G)Redmi Note 4 (MTK 64GB/4GB)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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