Sony Xperia U (ST25a) vs Sony Ericsson Xperia Arc S (LT18a)

Share page: Facebook Twitter WhatsApp Share page:

Side by side comparison between Sony Xperia U vs Sony Ericsson Xperia Arc S phones, differences, pros, cons and full specifications. What's the better?

7/27/2012 4:13 AM, updated: 11/10/2021 4:36 PM

Compare Sony Ericsson Xperia Arc S 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)

08Points Sony Ericsson Xperia Arc S (LT18a) Compare Sony Xperia U X

Specifications Compare Models Pictures

4.2"
LED

480x854

8
MP

512MB
RAM

Single-core

1500
mAh

(Removable)

What's the better phone? Sony Ericsson Xperia Arc S (LT18a)

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	8 Advantages Sony Ericsson Xperia Arc S (LT18a)
+8GB (4GB available)12 times More internal storage for applications and files	vs	1GB (320MB available)
+110 grams (3.85 ounces)6% Lighter	vs	117 grams (4.1 ounces)
+280 PPI20% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	233 PPI
+(front) 0.3MPAdvantage A front-camera is best for taking selfies	vs	Not supported
1GHz 32bit Dual-core (45nm)	vs	+1.4GHz 32bit Single-core23% More powerful processor, you can open your applications faster
Not supported	vs	+Until 32GB microSD, microSDHCAdvantage More external storage for files using memory cards
12 millimeters (0.47 inches)	vs	+8.7 millimeters (0.34 inches)38% Thinner
3.5"	vs	+4.2"20% Larger screen
(back) 5MP	vs	+(back) 8MP59% Higher resolution main camera
3G HSUPA	vs	+3G+ HSPA+Advantage The 3G+ HSPA+ network is newer and faster
1320 mAh	vs	+1500 mAh14% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Not supported	vs	+Micro HDMI Type DAdvantage The TV-output lets you use your device on TV by cable

26 Common items in both devices

512MB LPDDR2

TFT LED-Backlit LCD

16 million

480x854 pixels

LED flash

Only digital zoom

Autofocus

+19 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)	Sony Ericsson Xperia Arc S (LT18a)
Change model		Choose the model
Model	Xperia U (ST25a)	Xperia Arc S (LT18a)
Other model names	Sony Xperia U ST25, Sony Kumquat	Sony Xperia Arc S LT18, Sony Ericsson Ayame
Country or region available	(Latin America), Brazil, Canada, USA	(Latin America), Brazil, Canada, USA
Brand	Sony	Sony Ericsson
Release date	5/7/2012	9/1/2011
Depth	12 millimeters (0.47 inches)	8.7 millimeters (0.34 inches)
Size (width x height)	54 x 112 millimeters (2.13 x 4.41 in)	63 x 125 millimeters (2.48 x 4.92 in)
Weight	110 grams (3.85 ounces)	117 grams (4.1 ounces)
Build, materials	Plastic body, glass front	feature not registered
Protection against water and others	Not supported	Not supported
📲 Display
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
Display type	TFT LED-Backlit LCD	TFT LED-Backlit LCD
Screen size	3.5" inches	4.2" inches
Screen-to-body ratio	~55.8% (screen-to-body ratio)	~61.7% (screen-to-body ratio)
Display resolution	480x854 pixels (16:9)	480x854 pixels
Touchscreen	Capacitive Multitouch 4-points	Capacitive Multitouch
Pixel density (dot pitch)	280 PPI	233 PPI
Colors	16 million	16 million
Scratch-resistant glass	Scratch-resistant glass	Scratch-resistant glass
Refresh rate	60Hz	feature not registered
Display features	Not supported	feature not registered
🤖 Operating System
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
System version	Android 2.3.7 Gingerbread	Android 2.3.4 Gingerbread
Firmware update	Android 4.0.4 Ice Cream Sandwich ICS	Android 4.0.4 Ice Cream Sandwich ICS
User Interface	feature not registered	feature not registered
⚙️ Processor
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
Chipset	32bit: ST-Ericsson NovaThor U8500 (45nm)	32bit: Qualcomm Snapdragon MSM8255T
CPU	Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core)	Single-core, 1 processor: 1x 1.4GHz Scorpion (Single-core)
GPU graphical controller	ARM Mali-400 MP1	Qualcomm Adreno 205
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
RAM memory	512MB LPDDR2	512MB LPDDR2
Internal storage	8GB (4GB available)	1GB (320MB available)
External storage	Not supported	Until 32GB microSD, microSDHC (dedicated slot)
📶 Mobile networks
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
Dual-SIM	Not supported	Not supported
SIM card	1 slot (Single-SIM) Standard mini-SIM (2FF)	1 slot (Single-SIM) Standard mini-SIM (2FF)
Maximum Download / Upload	14.4/5.76 Mbps	14.4/5.76 Mbps
Network technology	2G, 3G	2G, 3G
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 800/850/1900/2100
Primary 4G network	Not supported	Not supported
Primary 5G network	Not supported	Not supported
Primary data network	GPRS, EDGE, UMTS, HSDPA, HSUPA	CSD, GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
Secondary 2G network	Not supported	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	Not supported	Not supported
📷 Camera
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
Back camera (main camera)	5 megapixels	8 megapixels
Main camera resolution	2592x1944 pixels	3264x2448 pixels
Video recording (primary)	HD (1280x720) 30 fps	HD (1280x720) 30 fps
Flash	LED flash	LED flash
Focal aperture	feature not registered	f/2.4 (aperture)
Focal length	feature not registered	feature not registered
Sensor size	feature not registered	feature not registered
Pixel size	feature not registered	feature not registered
Autofocus	Autofocus	Autofocus
Touch focus	Supported	Supported
Image stabilization	EIS: Digital stabilization	feature not registered
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	Not supported
Camera extras	feature not registered	feature not registered
📸 Front camera
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
Front camera (secondary)	0.3 megapixels	Not supported
Front camera resolution	640x480 pixels	Not supported
Video recording (secondary)	VGA (640x480)	Not supported
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)	Sony Ericsson Xperia Arc S (LT18a)
Loudspeaker	Supported	Supported
Active noise cancellation	2 microphones or more	2 microphones or more
Radio	FM (RDS)	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.263, H.264, WMV	MP4, H.263, H.264, WMV
Audio formats	MP3, eAAC+, WMA, WAV	MP3, eAAC+, WMA, WAV
🔌 Connectivity
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
USB	MicroUSB 2.0, USB OTG On-The-Go	MicroUSB 2.0
Audio output	3.5mm jack	3.5mm jack
TV output	Not supported	Micro HDMI Type D
Bluetooth	2.1 + A2DP	2.1 + 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
NFC	Not supported	Not supported
Infrared port	Not supported	Not supported
🧭 Sensors
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
Sensors	Accelerometer Ambient light sensor Compass Proximity sensor	Accelerometer Ambient light sensor Compass Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
Battery type	Li-Ion: lithium-ion (Removable) BA600	LiPo: li-ion polymer (Removable) BA750
Battery capacity	1320 mAh	1500 mAh
Charger, watts	Wired charging	Wired charging
Inductive / wireless charging	Not supported	feature not registered
Talk time autonomy	5.6 hours	7.6 hours
Standby	472 hours (19.7 days)	460 hours (19.2 days)
➕ Other features
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
Call control	Voice dialing, Voice recorder, Voice commands	Voice dialing, Voice recorder, Voice commands
Messaging	SMS (T9), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Supported	Not supported
Ringtones	Polyphonic and customized	Polyphonic and customized
Web browser	HTML, XHTML, Flash player	HTML, XHTML, Flash player
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: Pure White, Midnight Blue, Misty Silver, Gloss Black, Sakura Pink • 8GB microSD included • Open ES 1.1 • Sony Mobile BRAVIA Engine • SE Timescape • 3D sweep panorama • WiFi hotspot • Java framework
☢️ Radiation rate
	Sony Xperia U (ST25a)	Sony Ericsson Xperia Arc S (LT18a)
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)	0.66W/kg (head)