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AT&T Z331 vs Samsung A157

AT&T Z331 Remove phone

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User Rating - 8

Posted: 14 Oct 2011
Market Status: Released

Samsung A157 Remove phone

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Posted: 21 Feb 2012
Market Status: Released

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Design
Device typeFeature phoneBasic phone 
Dimensions3.86 x 2.03 x 0.67 inches (98 x 52 x 17 mm)3.83 x 1.84 x 0.65 inches (97 x 47 x 17 mm) 
Weight3.17 oz (90 g)
the average is 4.8 oz (136 g)
2.99 oz (85 g)
the average is 4.8 oz (136 g)
 
Display
Physical size2.4 inches1.8 inches 
Resolution240 x 320 pixels128 x 160 pixels 
Pixel density

Pixel density - The pixel density of a display represents the number of pixels over an area of one inch. It’s measured in “pixels per inch”, or ppi. The higher the number, the more detailed and good-looking the display is.

167 ppi116 ppi 
Technology

Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays.

TFTTFT 
Colors262 144262 144 
Additional display

Additional display - Shows specs of the phone's additional display

OLED  
Resolution

Resolution - Refers to the width and the length od the additional display

128 x 128 pixels  
Physical Size1.46 inches  
Camera
Camera3 megapixels  
CamcorderOther, 176 x 144 pixels  
Hardware
Processor

Processor - The processor is the main computing component of a phone and is a major factor when it comes to the overall speed of the device. Some more powerful smartphones use dual-core and quad-core processors designed to deliver greater performance.

 Single core, 416 MHz 
Built-in storage0.14 GB0.256 GB 
Storage expansionmicroSD, microSDHC up to 8 GB  
Battery
Talk time3.00 hours
the average is 12 h (741 min)
5.00 hours
the average is 12 h (741 min)
 
Stand-by time8.3 days (200 hours)
the average is 21 days (499 h)
10.0 days (240 hours)
the average is 21 days (499 h)
 
Capacity950 mAh800 mAh 
specifications continue after the ad
Multimedia
RadioFM  
Internet browsing
BrowserOpera Mini  
Technology
GSM850, 900, 1800, 1900 MHz850, 900, 1800, 1900 MHz 
UMTS850, 1900, 2100 MHz850, 1900 MHz 
DataEDGE, UMTS, HSDPA 3.6 Mbit/sUMTS, EDGE, GPRS 
Connectivity
Bluetooth2.0  
USBUSB 1.1  
Other features
NotificationsVibration, Silent mode, SpeakerphoneFlight mode, Speakerphone 
Hearing aid compatibilityM3, T4M4 
OtherTTY/TDDTTY/TDD 

To see the full specifications with in-depth details click here.

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