x PhoneArena is looking for new authors! To view all available positions, click here.

AT&T Z331 vs AT&T Z221

AT&T Z331 Remove phone

phone
User Rating - 8

Posted: 14 Oct 2011
Market Status: Released

AT&T Z221 Remove phone

phone
User Rating - 8.5

Posted: 28 Sep 2011
Market Status: Released

Add phone to compare

Design
Device typeFeature phoneBasic phone 
Dimensions3.86 x 2.03 x 0.67 inches (98 x 52 x 17 mm)3.76 x 1.92 x 0.73 inches (96 x 49 x 19 mm) 
Weight3.17 oz (90 g)
the average is 4.8 oz (136 g)
3.24 oz (92 g)
the average is 4.8 oz (136 g)
 
Display
Physical size2.4 inches2.0 inches 
Resolution240 x 320 pixels240 x 320 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 ppi200 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 14465 536 
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 megapixels0.3 megapixels VGA 
CamcorderOther, 176 x 144 pixelsYes 
Hardware
System memory

System memory - System memory, or RAM memory is the type of memory that the device uses to temporarily store data from the OS or currently-running apps. The more RAM available to the device, the better the performance will be when multiple or heavier programs are running.

 64 MB RAM / 128 MB ROM 
Built-in storage0.14 GB  
Storage expansionmicroSD, microSDHC up to 8 GB  
Battery
Talk time3.00 hours
the average is 12 h (736 min)
3.00 hours
the average is 12 h (736 min)
 
Stand-by time8.3 days (200 hours)
the average is 21 days (505 h)
8.3 days (200 hours)
the average is 21 days (505 h)
 
Capacity950 mAh900 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/sHSDPA 3.6 Mbit/s, UMTS, EDGE 
Connectivity
Bluetooth2.02.0 
USBUSB 1.1Yes 
Connector microUSB 
Other features
NotificationsVibration, Silent mode, SpeakerphonePolyphonic ringtones, Vibration, Silent mode, Speakerphone 
Hearing aid compatibilityM3, T4M3, T3 
OtherTTY/TDDVoice recording, TTY/TDD 

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

Latest stories