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| Phone | ZTE Z221 | Samsung SCH-A310 | Nokia N81 | Samsung SPH-Z400 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2" diag. 4 : 3 |
? |
2.4" diag. 4 : 3 |
1.9" diag. 4 : 3 |
| Display Resolution & Type |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
128 x 128 pixels LCD (Grayscale) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~150 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 900 mAh | ? | 1,050 mAh | 1,300 mAh |
| Processor | ? | ? | 369 MHz ARM 11 | ? |
| RAM | ? | ? | ? | ? |
| Storage | 142 MB | ? raw hardware | 8 GB * | ? raw hardware |
| Main Camera | Yes | - | 2 megapixel | 1 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QCIF (176 x 144) | - | VGA (640 x 480) | QCIF (176 x 144) |
| Front Camera | - | - | - | - |
| Weight |
3.24 oz (92g) |
3.2 oz (91g) |
4.94 oz (140g) |
4.06 oz (115g) |
| Dimensions |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
3.43" x 1.89" x 0.87" (87 x 48 x 22.1 mm) |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
3.73" x 1.91" x 1" (95 x 49 x 25.4 mm) |
| Form Factor | Clamshell | Clamshell | Slide | Clamshell |
| Platform / OS | (proprietary) | (proprietary) | S60 (Symbian) | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
| Data Technology | HSDPA 3.6 | 1xRTT | EDGE | EVDO rA |
| Features | ||||
| GPS / Location | Yes | Yes | n/a | Yes |
| Ruggedized | - | - | - | Yes |
| Accessibility | ||||
| Adjustable Text Size | - | - | n/a | Yes |
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
- | - |
Yes M4 (very compatible) |
| Multiple Languages | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | - | Yes |
| Alerts | ||||
| Extra Display | Yes | Yes | - | Yes |
| Ringer Profiles | Yes | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | - | Yes | Yes |
| USB | Yes | Yes |
Yes Micro-USB |
Yes |
| Wi-Fi | - | - |
Yes 802.11 b,g |
- |
| Contacts | ||||
| Picture ID | - | - | n/a | Yes |
| Ringer ID | - | - | n/a | Yes |
| Voice Dialing | - | Yes | n/a | Yes |
| Customization | ||||
| Changeable Body Plates | - | Yes | - | - |
| Custom Graphics | Yes | - | n/a | Yes |
| Custom Ringtones | Yes | - | n/a | Yes |
| Real-Music Ringers | Yes | - | n/a | Yes |
| Data & Network | ||||
| Data Tethering | - | Yes | n/a | Yes |
| WAP / Web Browser | Yes | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Memory | ||||
| Memory Card Slot | - | - | Yes * | - |
| Messaging | ||||
| Email Client | Yes | - | n/a | Yes |
| Instant Messaging | Yes | - | n/a | - |
| MMS | Yes | - | n/a | - |
| Text Messaging Templates | Yes | - | n/a | Yes |
| Music | ||||
| FM Radio | - | - | Yes | - |
| Headphone Jack (3.5mm) | - | - | Yes | - |
| Music Player | - | - | n/a | - |
| Stereo Speakers | - | - | Yes | Yes |
| Photo & Video | ||||
| Video Calling | - | - | n/a | - |
| Productivity | ||||
| Alarm | Yes | - | n/a | Yes |
| Calculator | Yes | - | n/a | Yes |
| Calendar | Yes | Yes | n/a | Yes |
| To-Do List | - | - | n/a | - |
| Voice Memo | Yes | Yes | n/a | Yes |
| Software | ||||
| Games | Yes | Yes | n/a | Yes |
| Java (J2ME) | Yes | - | n/a | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | - | Yes | n/a | Yes |
| Push-To-Talk | - | - | Yes * | Yes |
| Speaker Phone | Yes | - | Yes | Yes |
| * Some versions only | ||||
| ZTE Z221 | Samsung SCH-A310 | Nokia N81 | Samsung SPH-Z400 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z221 | Samsung SCH-A310 | Nokia N81 | Samsung SPH-Z400 |
