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Sony Xperia U / Sony Ericsson ST25i Kumquat

alaTest has collected and analyzed 3115 reviews of Sony Xperia U / Sony Ericsson ST25i Kumquat. The average rating for this product is 4.0/5, compared to an average rating of 4.1/5 for other Cell phones for all reviews. Reviewers are impressed by the design and performance. The size and screen are also appreciated. The reception and reliability get negative views, and there are some mixed views about the GPS navigation.

usability, screen, size, performance, design

battery, reliability, reception

We analyzed user and expert ratings, product age and more factors. Compared to other Cell phones the Sony Xperia U / Sony Ericsson ST25i Kumquat is awarded an overall alaScore™ of 87/100 = Very good quality.

See all Sony Ericsson Cell Phones

Review analysis

(Based on 3115 reviews)

Expert Reviews  

User Reviews  

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Consumer review ( review summary for Sony Xperia U / Sony Ericsson ST25i Kumquat


alaTest has collected and analyzed 138 user reviews of Sony Xperia U / Sony Ericsson ST25i Kumquat from The average user rating for this product is 3.8/5, compared to an average user rating of 4.1/5 for other Cell phones on Views about the screen and size are overall positive. The portability and usability are also appreciated, whereas the reliability and camera get less positive reviews.

performance, usability, portability, size, screen

camera, reliability

75% of the reviews on give this product a positive rating.

Aug, 2020

Consumer review ( review summary for Sony Xperia U / Sony Ericsson ST25i Kumquat


alaTest has collected and analyzed 434 user reviews of Sony Xperia U / Sony Ericsson ST25i Kumquat from The average user rating for this product is 4.0/5, compared to an average user rating of 3.8/5 for other Cell phones on Reviewers really like the size. The design is also mentioned favorably. Some have doubts about the reliability and screen. Views are divided on the performance.

portability, design, size

screen, reliability

83% of the reviews on give this product a positive rating.

Aug, 2020

Expert review by : GSMArena team (

Sony Xperia U review: Fun united


The Xperia S has all the spotlight to itself in the NXT series, but history has taught us that Sony (and previously Sony Ericsson) can do wonders in the compact class. In two generations of minis and the Xperia ray, the Japanese have delivered packages...

Quad-band GSM /GPRS/EDGE support ; 3.5" 16M-color capacitive touchscreen of Full WVGA resolution (854 x 480 pixels) with Sony Mobile BRAVIA engine ; Android OS v2.3.7 Gingerbread, planned Android 4.0 ICS update ; Dual-core 1 GHz Cortex-A9 CPU, 512 MB...

Limited storage with no expansion options ; No Android 4.0 Ice Cream Sandwich out of box ; Some competitors are slimmer

So, Sony know what they're doing in the midrange. The Xperia U is so comfortably ahead of similarly priced smartphones that it's one of the easiest to recommend.

Jun, 2012

Expert review by : James Trew (

Sony Xperia U review: a little slice of Android that punches above its weight


More InfoSony Xperia P reviewSony officially debuts Xperia U at MWC 2012Sony Xperia U gets torn to pieces, FCC destroys something

Smooth performance ; Bright screen ; Comfortable to use

Limited storage space ; Old Gingerbread OS ; Some minor software quirks

While the Xperia U might appear to be the next one down from the P, better battery life and general performance make this a worthy consideration if you have an eye for a smaller phone.

Jun, 2012

Expert review by : Aaron Souppouris (

Sony Xperia U review


The Xperia U is the final piece of Sony's NXT series puzzle. In March came the flagship Xperia S, a good device that shipped with outdated software. It's only just been updated to Android 4.0. Our...

Dense, bright display ; Snappy, agile performance ; Enduring battery life ; Great call quality

Ships with Android 2.3, not 4.0 ; Chubby design feels a little awkward ; LED lights not for everyone

You’ll have trouble finding a better device at this price point

Jul, 2012

Expert review by : Ben Kersey (

Sony Xperia U Review


Sony pushed the Xperia S out of the door back in March, but the Xperia P and Xperia U have lagged behind a little in making it to market. Both of those devices are finally with us, and just like HTC , Sony seems to be banking on three phones hitting...

The Xperia U is decent, but we can’t look past the two glaring issues. The first is the screen: maybe we’re nitpicking, but we wouldn’t be able to live with it for an extended period of time without becoming extremely irritated. Secondly, the omission...

May, 2012

Expert review by : Daniel P. (

Sony Xperia U Review


The Sony Xperia U begs to be noticed with its removable bottom caps in different colors and boxy design, clearly aiming for the younger crowd, but its capable hardware and affordable price actually make it suitable for everybody. We have a dual-core...

Very good specs and design for the price ; Two seconds sleep-to-snap camera mode ; Good call quality ; Strong and clear loudspeaker ; Transparent strip illuminates with different colors

Subpar video quality ; No microSD slot ; Lack of oleophobic coating

Sony has cut a few corners to achieve the very affordable price of the Xperia U, like the lack of oleophobic coating and microSD slot, but these are still overshadowed by the cool design and the contemporary specs like a dual-core processor and screen...

May, 2012

Expert review by : (

Sony Xperia U


An Android smartphone doesn't need to have the fastest processor, the largest touchscreen display, or the fastest mobile data speeds in order to be great. It just has to offer the right combination of hardware and software features at a price that...

Oct, 2012

Expert review by : Lauren Granger (

Sony Xperia U: a tiny kaleidoscope with personality


Are you the type of person who walks down the street, head down, sliding your nondescript phone out of your pocket as you go, trying not to draw attention

Sep, 2012

Expert review by : EveryReview (

Sony Xperia U Review


At the lower end of the smartphone but you'll still find most of the feature's you'll want, it's price is amazing value and it's a great phone to consider.

Great price, - Good battery

Missing some features

Aug, 2012

Expert review by : Sidney Wong (

Sony Xperia U - Funky Xperia


The smallest among the Xperia NXT family, the Sony Xperia U comes with a 3.5-inch Realty Display and a more affordable price tag. Its transparent band has some interesting tricks up its sleeve too. What are they? Read on to find out more of this handy...

Sony design imprint ; Solid build quality

No memory card slot ; Limited internal memory ; Battery life could be better ; Runs on Android 2.3

Retailing at S$488 without line contract (inclusive of GST), the Sony Xperia U is a mid-tier Android smartphone that offers an overall decent performance. While it has nothing really unique to boast about, its color-changing transparent strip and...

Jul, 2012

Expert review by : theunwired (

PHOTOVIEW: Sony Xperia U Android Smartphone


Announced back in February at this year's Mobile World Congress , the Sony Xperia U is Sony Mobile's successor of the Sony Ericsson Xperia ray . Like the ray, the Xperia U is featuring a tiny 3.5" touchscreen and was initially launched with Android 2.3...

Jul, 2012

Price comparison for Sony Xperia U / Sony Ericsson ST25i Kumquat

  Store     Price
Sony Xperia M4 Aqua 16GB GSM/LTE Unlocked Cell Phone...
SIM unlocked means no contracts or commitment to a specific carrier. Compatible with GSM Networks including...
$79.00 TO SHOP
Sony Xperia 1 Unlocked Smartphone 6.5" 4K HDR OLED...
6. 5 inches 4K OLED smartphone with 21: 9 Cinema Wide display. SIM Capability - Number of SIM - Dual SIM...
$788.00 TO SHOP
Sony Xperia XZ1 Compact - Factory Unlocked Phone - 4...
19MP main camera with Motion Eye system and enhanced Predictive Hybrid Autofocus with rapid-fire burst...
$419.00 TO SHOP
Sony Xperia 5 Unlocked Smartphone
Sony Xperia 5 Unlocked smartphone OLED cinema wide display, 128GB - Black - (us )
$698.00 TO SHOP
Sony Xperia XZ2 Unlocked Smarphone - Dual SIM - 5.7"...
5.7-Inch, extended 18: 9 Aspect ratio HDR full HD+ display with new “ambient flow” design. Automatic up...
$499.00 TO SHOP
Sony Xperia X Compact - Unlocked Smartphone - 32GB...
Compact 4.6" HD display, durable Corning Gorilla glass 4, and a rounded design that fits comfortably in...
$166.00 TO SHOP
Sony Xperia Z4 Tablet 10.1" 32 GB - Wifi Only...
Keep going in all weather conditions with the extremely durable water- and dust-resistant design.
$799.00 TO SHOP
Sony Xperia XZ - Unlocked Smartphone - 32GB - Forest...
5.2" Full HD display with premium, durable Corning Gorilla Glass 4 and polished metal in a rounded form for...
$172.00 TO SHOP
Sony Xperia XA1 Ultra G3223 32GB Unlocked GSM LTE...
6.0-inch Full HD 1080p Display - IPS LCD Capacitive Touchscreen, 1080 x 1920 pixel resolution (~367ppi...
$178.00 TO SHOP
Sony Xperia XA2 Factory Unlocked Phone - 5.2" Screen...
5.2” edge-to-edge full HD display (1080P) with curved 2.5D Corning Gorilla glass.
$319.00 TO SHOP

Note: Please check the product information and price with the store.