Sony Xperia U (ST25a) vs Microsoft Lumia 640 XL (4G LTE)

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Side by side comparison between Sony Xperia U vs Microsoft Lumia 640 XL phones, differences, pros, cons and full specifications. What's the better?

5/6/2015 9:59 PM, updated: 11/10/2021 4:36 PM

Compare Microsoft Lumia 640 XL X Sony Xperia U (ST25a) 04Points

Specifications Compare Models Pictures

3.5"
LED

480x854

5
MP

0.3mp

512MB
RAM

Dual-core

1320
mAh

(Removable)

19Points Microsoft Lumia 640 XL (4G LTE) Compare Sony Xperia U X

Specifications Compare Models Pictures

5.7"
IPS

720x1280

13
MP

5mp

1GB
RAM

Quad-core

3000
mAh

(Removable)

What's the better phone? Microsoft Lumia 640 XL (4G LTE)

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!

4 Advantages Sony Xperia U (ST25a)	vs	19 Advantages Microsoft Lumia 640 XL (4G LTE)
+8GB (4GB available)33% More internal storage for applications and files	vs	8GB (3GB available)
+110 grams (3.85 ounces)55% Lighter	vs	171 grams (5.99 ounces)
+280 PPI9% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	258 PPI
+3500000 apps (Google Play Store)4 times More apps available to download and use	vs	700000 apps (Marketplace)
1GHz 32bit Dual-core (45nm)	vs	+1.2GHz 32bit Quad-core62% More powerful processor, you can open your applications faster
512MB LPDDR2	vs	+1GB LPDDR2100% More RAM memory. Typically more responsive and better for multitasking.
Not supported	vs	+Until 256GB microSD, microSDXCAdvantage More external storage for files using memory cards
12 millimeters (0.47 inches)	vs	+9 millimeters (0.35 inches)33% Thinner
TFT LED-Backlit LCD	vs	+TFT IPS LCDAdvantage TFT IPS LCD display is brighter and more vivid
480x854 pixels	vs	+720x1280 pixels125% Higher resolution screen
3.5"	vs	+5.7"63% Larger screen
(back) 5MP	vs	+(back) 13MP154% Higher resolution main camera
Not supported	vs	+HDR photo only main cameraAdvantage The HDR technology produced photos with more detail in dark areas
(front) 0.3MP	vs	+(front) 5MP15 times Higher resolution secondary camera to take pictures and selfies
HD (1280x720)	vs	+Full HD (1920x1080)125% More image quality for recording videos with the primary camera
(front) VGA (640x480)	vs	+(front) Full HD (1920x1080)6 times More image quality for recording videos with the secondary camera
3G HSUPA	vs	+4G LTEAdvantage The 4G LTE network is newer and faster
(3G HSUPA) 14.4 Mbps	vs	+(4G LTE) 150 Mbps9 times Faster for surfing the internet and download files
1320 mAh	vs	+3000 mAh127% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
1 slot (Single-SIM)	vs	+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.
2.1 + A2DP	vs	+4.0 + A2DPAdvantage Bluetooth 4.0 + A2DP is newer and faster
Not supported	vs	+NFCAdvantage NFC allows you to make payments by approach quickly and securely
HTML, XHTML, Flash player	vs	+HTML, XHTML, HTML5Advantage Better sites viewing on the internet

20 Common items in both devices

Plastic body, glass front

16 million

LED flash

Only digital zoom

Autofocus

EIS: Digital stabilization

Capacitive

+13 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

📱 Model features
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Change model		Choose the model
Model	Xperia U (ST25a)	Lumia 640 XL (4G LTE)
Other model names	Sony Xperia U ST25, Sony Kumquat	Microsoft Lumia 640 XL LTE RM-1075 Dual-sim
Country or region available	(Latin America), Brazil, Canada, USA	(Global, International)
Brand	Sony	Microsoft
Release date	5/7/2012	4/1/2015
Depth	12 millimeters (0.47 inches)	9 millimeters (0.35 inches)
Size (width x height)	54 x 112 millimeters (2.13 x 4.41 in)	81.5 x 157.9 millimeters (3.21 x 6.22 in)
Weight	110 grams (3.85 ounces)	171 grams (5.99 ounces)
Build, materials	Plastic body, glass front	Plastic body, glass front
Protection against water and others	Not supported	Not supported
📲 Display
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Display type	TFT LED-Backlit LCD	TFT IPS LCD
Screen size	3.5" inches	5.7" inches
Screen-to-body ratio	~55.8% (screen-to-body ratio)	~69.6% (screen-to-body ratio)
Display resolution	480x854 pixels (16:9)	720x1280 pixels
Touchscreen	Capacitive Multitouch 4-points	Capacitive Multitouch
Pixel density (dot pitch)	280 PPI	258 PPI
Colors	16 million	16 million
Scratch-resistant glass	Scratch-resistant glass	Gorilla Glass 3
Refresh rate	60Hz	feature not registered
Display features	Not supported	feature not registered
🤖 Operating System
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
System version	Android 2.3.7 Gingerbread	Windows Phone 8.1
Firmware update	Android 4.0.4 Ice Cream Sandwich ICS	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Chipset	32bit: ST-Ericsson NovaThor U8500 (45nm)	32bit: Qualcomm Snapdragon 400 MSM8226 (28nm)
CPU	Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core)	Quad-core, 1 processor: 4x 1.2GHz ARM Cortex-A7 (Quad-core)
GPU graphical controller	ARM Mali-400 MP1	Qualcomm Adreno 305
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
RAM memory	512MB LPDDR2	1GB LPDDR2
Internal storage	8GB (4GB available)	8GB (3GB available)
External storage	Not supported	Until 256GB microSD, microSDXC (dedicated slot)
📶 Mobile networks
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Dual-SIM	Not supported	Dual-SIM Standby - Call active on one sim card (dedicated slot)
SIM card	1 slot (Single-SIM) Standard mini-SIM (2FF)	2 slots (Dual-SIM) micro-SIM (3FF)
Maximum Download / Upload	14.4/5.76 Mbps	150/50 Mbps
Network technology	2G, 3G	2G, 3G, 4G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Quad-Band 850/900/1800/1900	Quad-Band 850/900/1800/1900
Primary 2G network	GSM 850/900/1800/1900	GSM 850/900/1800/1900
Primary 3G network	UMTS 850/1900/2100	UMTS 850/900/1700/1900/2100
Primary 4G network	Not supported	LTE Cat4 700/800/850/900/1700/1800/1900/2100/2300/2600 (Bands 1,2,3,4,5,7,8,12,17,20,28,38,40)
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA	GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE
Secondary 2G network	Not supported	GSM 850/900/1800/1900
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	GPRS, EDGE
📷 Camera
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Back camera (main camera)	5 megapixels	13 megapixels
Main camera resolution	2592x1944 pixels	4128x3096 pixels
Video recording (primary)	HD (1280x720) 30 fps	Full HD (1920x1080) 30 fps
Flash	LED flash	LED flash
Focal aperture	feature not registered	f/2.0 (aperture)
Focal length	feature not registered	28mm lens
Sensor size	feature not registered	1/3" inches
Pixel size	feature not registered	feature not registered
Autofocus	Autofocus	Autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	EIS: Digital stabilization
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	Face detection, Smile detection
BSI sensor	Not supported	Supported
HDR	Not supported	HDR photo only main camera
Camera extras	feature not registered	feature not registered
📸 Front camera
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Front camera (secondary)	0.3 megapixels	5 megapixels
Front camera resolution	640x480 pixels	2592x1944 pixels
Video recording (secondary)	VGA (640x480)	Full HD (1920x1080)
Front flash	Not supported	Not supported
Focal aperture	feature not registered	feature not registered
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
🔉 Sound and multimedia
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM (RDS)	FM
TV	Not supported	Not supported
Video formats	MP4, H.263, H.264, WMV	MP4, H.264, H.263, WMV
Audio formats	MP3, eAAC+, WMA, WAV	MP3, WAV, WMA, eAAC+
🔌 Connectivity
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
USB	MicroUSB 2.0, USB OTG On-The-Go	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Not supported
Bluetooth	2.1 + A2DP	4.0 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz)	802.11 b/g/n [wifi4] (2.4GHz)
DLNA	Supported	Supported
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging, GLONASS, BeiDou
NFC	Not supported	Supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Sensors	Accelerometer Ambient light sensor Compass Proximity sensor	Accelerometer Ambient light sensor Compass Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Battery type	Li-Ion: lithium-ion (Removable) BA600	Li-Ion: lithium-ion (Removable)
Battery capacity	1320 mAh	3000 mAh
Charger, watts	Wired charging	Wired charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	5.6 hours	23.7 hours
Standby	472 hours (19.7 days)	936 hours (39 days)
➕ Other features
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, Flash player	HTML, XHTML, HTML5
Antenna	Internal antenna	Internal antenna
Qwerty physical keyboard	Not supported	Not supported
Miscellaneous	• Colors: Black, White • Exchangeable bottom caps: White, Black, Pink, Yellow • Sony Reality Display • Sony Mobile BRAVIA Engine • xLoud • 3D surround sound • WiFi hotspot • Java framework	• Colors: Black, White • Lumia Denim UI • Microsoft ClearBlack display • OneDrive 30GB • WiFi hotspot • Headset not included
☢️ Radiation rate
	Sony Xperia U (ST25a)	Microsoft Lumia 640 XL (4G LTE)
SAR 1.6W/kg (USA, Mexico, etc.)	1.09W/kg (head), 0.93W/kg (body)	feature not registered
SAR 2W/kg (Europe, UK, etc.)	1.62W/kg (head)	feature not registered