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AT&T Z331 vs AT&T Z221 Size compare

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AT&T Z331 Remove phone

Posted: 14 Oct 2011
Market Status: Released
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AT&T Z221 Remove phone

Posted: 28 Sep 2011
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)3.76 x 1.92 x 0.73 inches (96 x 49 x 19 mm) 
Weight3.17 oz (90 g)
the average is 5.4 oz (156 g)
3.24 oz (92 g)
the average is 5.4 oz (156 g)
 
FeaturesNumeric keypad, D-Pad, Soft keysNumeric keypad, D-Pad 
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 
Screen-to-body ratio

Screen-to-body ratio - Shows what part of the frontal area of a phone its screen occupies.

35.28 %26.60 % 
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 
CamcorderResolution, 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.

 0.06 GB RAM / 128 MB ROM 
Built-in storage

Built-in storage - Bigger storage capacity allows you to keep more content saved onto your device, such as more applications, photos or video. Games and video content typically take up the biggest amount of storage space.

0.14 GB  
Storage expansion

Storage expansion - Some handsets allow you to expand their storage capacity by using a memory expansion card – most often microSD. Expansion memory is mostly suitable for media storage, such as photo, video or music content.

microSD, microSDHC up to 8 GB  
Battery
Capacity

Capacity - The bigger, the better! However, battery capacity is not the only factor that has an effect on battery life. Those include the chipset in use, the software running on the device, as well as the consumer's unique usage pattern.

950 mAh900 mAh 
TypeUser replaceable, Li - IonUser replaceable, Li - Ion 
Talk time3.00 hours
the average is 20 h (1202 min)
3.00 hours
the average is 20 h (1202 min)
 
Stand-by time8.3 days (200 hours)
the average is 19 days (459 h)
8.3 days (200 hours)
the average is 19 days (459 h)
 
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Multimedia
RadioFM  
Cellular
GSM850, 900, 1800, 1900 MHz850, 900, 1800, 1900 MHz 
UMTS850, 1900, 2100 MHz850, 1900 MHz 
DataUMTS, HSDPA 3.6 Mbit/sHSDPA 3.6 Mbit/s, UMTS 
Phone features
NotificationsVibration, Silent mode, SpeakerphonePolyphonic ringtones, Vibration, Silent mode, Speakerphone 
Hearing aid compatibilityM3, T4M3, T3 
Other featuresTTY/TDDVoice recording, TTY/TDD 
Connectivity
Bluetooth2.02.0 
USBUSB 1.1Yes 
Connector microUSB 

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

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