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AT&T Z331

AT&T Z331
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Posted: 14 Oct 2011
Market Status: Released
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US carrier availability: AT&T - Available (Since 14 Oct 2011)
Links: AT&T Z331 manual

The AT&T Z331 is a clamshell phone with a 2.4-inch color display, 3-megapixel camera, 3G connectivity, music player, email, Bluetooth and organizer.

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AT&T Z331 specifications

also known as ZTE Z331

Pros

No pros

Cons

Low pixel densitiy screen, below 180ppi (167 ppi)
It is so thick it needs a personal fitness trainer (0.67 inches)
Low resolution display (240 x 320 pixels)
Lacks global positioning system (GPS)
Low-resolution camera (3 megapixels)
The camera lacks autofocus
Low-resolution video capture
Lacks a standard (3.5mm) headphones jack
Lacks an ambient light sensor for automatic screen brightness adjustment

Design

Device type:
- Feature phone
Form factor:
Form factor - Refers to the form factor of a phone. The main handset designs are bar, clamshell, slide, swivel
- Clamshell
Dimensions:
- 3.86 x 2.03 x 0.67 (98 x 52 x 17 mm)
Weight:
- 3.17 oz (90 g)
  the average is 4.2 oz (120 g)

Display

Physical size:
- 2.40 inches
Resolution:
- 240 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 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.
- TFT
Colors:
Colors - Shows the number of colors that the display supports
- 262 144
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 Size:
  - 1.46 inches

Battery

Talk time:
Talk time - Maximum talk time in hours
- 3.00 hours
  the average is 8 h (496 min)
Stand-by time:
- 8.3 days (200 hours)
  the average is 21 days (498 h)
Capacity:
- 950 mAh

Hardware

Built-in storage:
- 140 MB
Storage expansion:
- Slot Type:
  - microSD, microSDHC
- Maximum card size:
  Maximum card size - Shows the capacity of the memory expansion slot that can be added
  - 8 GB

Camera

Camera:
- - 3 megapixels
Camcorder:
- - Other, 176 x 144 pixels

Multimedia

Radio:
- - FM

Internet browsing

Browser:
- - Opera Mini
- Supports:
  - XHTML, WAP, CSS

Technology

GSM:
GSM - Global System for Mobile communications. A world standard for digital cellular communications using narrowband TDMA (Time Division Multiple Access), which allows up to eight calls at a time on 800 MHz and 1800 MHz frequencies. Introduced in 1991. Is the standard most commonly used in Europe and Asia, but not in the United States. GSM phones use a Subscriber Identity Module (SIM) smart card that contains user account information. Any GSM phone becomes immediately programmed after plugging in the SIM card, thus allowing GSM phones to be easily rented or borrowed.
- 850, 900, 1800, 1900 MHz
UMTS:
UMTS - Universal Mobile Telecommunications Service, also called WCDMA, is a 3G (Third Generation) packet-based transmission of text, digitized voice, video, and multimedia at data rates up to 2 Mbps. It is based on GSM standard and is supported by major standards bodies and manufacturers
- 850, 1900, 2100 MHz
Data:
Data - Shows the particular phone's type of data. the major mobile phone data types are GPRS, CDMA2000 1xRTT, EDGE, CDMA2000 1xEV-DO, UMTS, etc.
- HSDPA 3.6 Mbit/s, UMTS, EDGE

Phone features

Phonebook:
Organizer:
- Calendar, Alarm, Calculator
Messaging:
- SMS, MMS, Predictive text input
E-mail:
- - IMAP, POP3, SMTP

Connectivity

Bluetooth:
- - 2.0
USB:
- - USB 1.1

Other features

Notifications:
- Vibration, Silent mode, Speakerphone
Hearing aid compatibility:
- - M3, T4
- TTY/TDD

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

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