AT&T Z221
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| Design | |||
|---|---|---|---|
| Device type | Basic phone | ||
| Form factor | Clamshell | ||
| Dimensions | 3.76 x 1.92 x 0.73 inches (96 x 49 x 19 mm) | ||
| Weight | 3.24 oz (92 g) the average is 4.4 oz (127 g) | ||
| Design features | Numeric keypad, D-Pad |
| Display | |||
|---|---|---|---|
| Physical size | 2.0 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. | 200 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 | 65 536 |
| Battery | |||
|---|---|---|---|
| Talk time | 3.00 hours the average is 11 h (647 min) | ||
| Stand-by time | 8.3 days (200 hours) the average is 18 days (441 h) | ||
| Capacity | 900 mAh | ||
| Type | Li - Ion |
| 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 |
| Camera | |||
|---|---|---|---|
| Camera | 0.3 megapixels VGA | ||
| Camcorder | Yes |
| Multimedia | |||
|---|---|---|---|
| Music player | |||
| Supported formats | MP3, AAC | ||
| Video playback | |||
| Supported formats | MPEG4, H.263, H.264 |
| Technology | |||
|---|---|---|---|
| GSM | 850, 900, 1800, 1900 MHz | ||
| UMTS | 850, 1900 MHz | ||
| Data | HSDPA 3.6 Mbit/s, UMTS, EDGE | ||
| Global Roaming | Yes |
| Phone features | |||
|---|---|---|---|
| Phonebook | 500 entries | ||
| Organizer | Calendar, Alarm | ||
| Messaging | SMS, MMS, Predictive text input | ||
| Yes | |||
| Instant Messaging | Yes | ||
| Games | Yes |
| Connectivity | |||
|---|---|---|---|
| Bluetooth | 2.0 | ||
| USB | Yes | ||
| Connector | microUSB |
| Other features | |||
|---|---|---|---|
| Notifications | Polyphonic ringtones, Vibration, Silent mode, Speakerphone | ||
| Hearing aid compatibility | M3, T3 | ||
| Other | Voice recording, TTY/TDD |








