Xiaomi Mi4 vs Microsoft Lumia 640 XL

Comparing the Xiaomi Mi4 vs Microsoft Lumia 640 XL across performance, display, camera, battery, storage and user rating to help determine the better smartphone.

Here is the summary of the results:

Performance: Xiaomi Mi4 runs at a higher processing speed of 2.5 GHz, while Microsoft Lumia 640 XL runs at 1.2 GHz, making Xiaomi Mi4 the better performer.

Display: Microsoft Lumia 640 XL offers a screen size of 5.7 inches, while Xiaomi Mi4 offers 5 inches, making Microsoft Lumia 640 XL the larger display of the two. Both Xiaomi Mi4 and Microsoft Lumia 640 XL feature the same IPS LCD display.

Rear Camera: Both Xiaomi Mi4 and Microsoft Lumia 640 XL feature a 13 MP primary rear camera.

Front Camera: Xiaomi Mi4 offers a higher front camera resolution with 8 MP, while Microsoft Lumia 640 XL offers 5 MP, making Xiaomi Mi4 better for front camera photography.

Battery: Xiaomi Mi4 offers a higher battery capacity with 3080 mAh, while Microsoft Lumia 640 XL offers 3000 mAh, making Xiaomi Mi4 better for longer battery life.

Storage: Microsoft Lumia 640 XL offers higher internal storage with 8 GB, while Xiaomi Mi4 offers 16 GB, making Microsoft Lumia 640 XL the better option for storage.

User Rating: Xiaomi Mi4 receives a higher user rating of 4.1, while Microsoft Lumia 640 XL has a rating of 2.5.

Xiaomi Mi4

₹14,999

(Out of Stock)

Microsoft Lumia 640 XL

(Discontinued)

Summary

Release Date

10 Feb, 2015

07 Apr, 2015

14 May, 2026

Performance

	N/A
Snapdragon 801	Snapdragon 400	Snapdragon 8 Elite Gen 5
Quad Core (upto 2.5 GHz)	(upto 1.2 GHz)	Octa Core (upto 4.61 GHz)
3 GB RAM	1 GB RAM	16 GB RAM

Display

	N/A
5 inches (12.7 cm)	5.7 inches (14.48 cm)	6.82 inches (17.32 cm)
IPS LCD	IPS LCD	AMOLED
1080x1920 px (FULL HD)	720x1280 px (HD)	1440x3168 px (QHD+)
N/A	N/A	144 Hz Refresh Rate

Rear Camera

	N/A
13 MP Primary Camera	13 MP Primary Camera	200 MP Primary Camera (upto 3.7x Optical Zoom)
N/A	N/A	200 MP Telephoto Camera
N/A	N/A	50 MP Ultra-Wide Angle Camera

Front Camera

	N/A
8 MP	5 MP	50 MP

Battery

	N/A
3080 mAh	3000 mAh	6600 mAh
Quick Charging	N/A	100W Flash Charging
No Wireless Charging	N/A	Wireless Charging

Storage

16 GB	8 GB	512 GB
N/A	N/A	UFS 4.1

Expert Review

N/A

8.7/10

Read Expert Review

Pros

Device yet to be reviewed

Device yet to be reviewed

Stellar and versatile three-lens camera system
Excellent performance
Bright and crisp 2K AMOLED display

Cons

Device yet to be reviewed

Device yet to be reviewed

Battery life could have been better
Very expensive with camera kit
No shortcut key

User Ratings

4.1/5

(27,948 ratings)

2.5/5

(2 ratings)

4.6/5

(29 ratings)

Benchmarks (The higher, the better)

N/A	N/A	3,977,648 AnTuTu Score
N/A	N/A	15h 10m Battery Life (PC Mark)

Compare Prices

Not Available in any store

₹159,999

@ Amazon

Video

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User Feedback

General

Launch Date

Feb 10, 2015

(Official)

N/A

May 06, 2026

(Official)

Operating System

Android v4.4.3 (Kitkat)

Windows Phone v8.1

Android v16

OS Updates

N/A

5 Year

Security Updates

N/A

7 Year

Custom UI

N/A

Origin OS

Performance

Performance Rating

Avg

N/A

Best In Class

Chipset

Qualcomm Snapdragon 801 MSM8974AC

Qualcomm Snapdragon 400 MSM8226

Qualcomm Snapdragon 8 Elite Gen 5 SM8850-AC

Processor

Quad core, 2.5 GHz, Krait 400

Quad core, 1.2 GHz, Cortex A7

Octa core

4.61 GHz, Dual core, Oryon 3.62 GHz, Hexa Core, Oryon

Architecture (The higher, the better)

N/A

64 bit

Fabrication (The lower, the better)

N/A

3 nm

Graphics (GPU)

Adreno 330

Adreno 305

Adreno 840

RAM

3 GB

1 GB

16 GB

RAM Type

LPDDR3

N/A

LPDDR5X Ultra

Performance Test Results

AnTuTu Score (The higher, the better) AnTuTu benchmark measures overall performance of a phone by stress-testing CPU, GPU, RAM, etc.

N/A

3,977,648

Bootup Time (The lower, the better)

N/A

14.0 s

Gaming Test Results

Wild Life Extreme (The higher, the better) Wild Life Extreme is a classic mobile benchmark; it renders in 4K to test the peak performance of a wide range of devices.

N/A

6,450

Battery Drain* (The lower, the better)

N/A

7.0 %

Heating* (The lower, the better)

N/A

21.7 %

* after 30 mins of gaming

Display

Display Rating

Excellent

N/A

Best In Class

Display Type

IPS LCD

AMOLED

Screen Size

5 inches (12.7 cm)

5.7 inches (14.48 cm)

6.82 inches (17.32 cm)

Resolution

1080x1920 px (FULL HD)

720x1280 px (HD)

1440x3168 px (QHD+)

Peak Brightness

N/A

4500 nits

Refresh Rate

N/A

144 Hz

Aspect Ratio

N/A

19.8:9

Pixel Density

441 ppi

258 ppi

510 ppi

Screen to Body Ratio (calculated)

72.11 %

69.55 %

89.7 %

Screen Protection

Corning Gorilla Glass v3

Yes

Bezel-less Display

N/A

Yes with punch-hole display

HDR 10 / HDR+ Support

N/A

Yes

Screen to Body Ratio (claimed by the brand)

N/A

94.49 %

Design

Height

139.2 mm

157.9 mm

162.98 mm

Width

68.5 mm

81.5 mm

76.81 mm

Thickness

8.9 mm

9 mm

8.19 mm

Weight

149 grams

171 grams

232 grams

Build Material

Frame: Stainless steel
Back: Stainless steel

N/A

Back: Glass

Rear Camera

Front Camera

Front Camera Rating

Very Good

N/A

Best In Class

Resolution

8 MP
f/1.8 Primary CameraExmor RS

5 MP
Primary Camera

50 MP
f/2.45 Primary Camera

Autofocus

N/A

Flash

N/A

Yes Screen flash

Video Recording

Full HD @30 fps

1920x1080 @ 30 fps

N/A

Battery

Battery Rating

Very Good

N/A

Excellent

Capacity

3080 mAh

3000 mAh

6600 mAh

Battery Type

Li-Polymer

Li-ion

TalkTime

N/A

Up to 24 Hours(3G) / Up to 30.3 Hours(2G)

N/A

Quick Charging

Yes Quick Charging v2.0

N/A

Yes 100W Flash Charging

Wireless Charging

N/A

Yes 40W Wireless Charging

Battery Test Results

Battery Life (PC Mark) (The higher, the better) PCMark Battery benchmark measures battery life of a phone with various activities such as web browsing, photo editing, writing, video editing, etc.

N/A

15h 10m

Charging Time (20% to 100%) (The lower, the better)

N/A

0h 36m 0s

Storage

Internal Storage

16 GB / 64 GB

8 GB

512 GB

Storage Type

N/A

UFS 4.1

Expandable Storage

Yes Up to 128 GB

N/A

Network & Connectivity

SIM Slot(s)

Single SIM

Dual SIM

SIM Type

SIM1: Micro

SIM1: Nano SIM2: Nano

Network Support

5G Not Supported

5G 4G

VoLTE

N/A

Yes

SIM 1

N/A

5G Bands:

FDD N1 / N2 / N3 / N5 / N7 / N8 / N12 / N18 / N20 / N25 / N26 / N28 / N66
TDD N38 / N40 / N41 / N48 / N77 / N78 / N79 / N80 / N81 / N83 / N84 / N89

N/A

4G Bands:

TD-LTE 3500(band 48) / 2600(band 38) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39) / 3500(band 42) / 3700(band 43)
FD-LTE 1700(band 66) / 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26)

SIM 2

N/A

5G Bands:

FDD N1 / N2 / N3 / N5 / N7 / N8 / N12 / N18 / N20 / N25 / N26 / N28 / N66
TDD N38 / N40 / N41 / N48 / N77 / N78 / N79 / N80 / N81 / N83 / N84 / N89

N/A

4G Bands:

TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 2100(band 34) / 1900(band 39) / 3500(band 42) / 3700(band 43) / 3500(band 48)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 12) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26) / 1700(band 66)

SAR Value

Head: 0.92 W/kg Body: 1.36 W/kg

N/A

Wi-Fi

Yes Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz

Yes Wi-Fi 4 (802.11 b/g/n)

Yes Wi-Fi 7 (802.11 be/ax) MIMO

Wi-Fi Features

Wi-Fi Direct Mobile Hotspot

N/A

Wi-Fi Direct Mobile Hotspot

Bluetooth

Yes v4.0

Yes v6.0

GPS

Yes with A-GPS Glonass

NFC

Yes

IR Blaster

N/A

Yes

Multimedia

Audio Jack

3.5 mm

USB Type-C

Sensors

Fingerprint Sensor

N/A

Yes

Fingerprint Sensor Position

N/A

On-screen

Fingerprint Sensor Type

N/A

Ultrasonic

Other Sensors

Light sensor Proximity sensor Accelerometer Barometer Compass Gyroscope

Light sensor Proximity sensor Accelerometer Compass

Light sensor Proximity sensor Accelerometer Compass Gyroscope

Compare Prices

Not Available in any store

₹159,999

@ Amazon