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| Phone | BlackBerry 7750 | Nuu F4L | Samsung SPH-i550 | ZTE Z221 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Not yet released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
2.8" diag. 4 : 3 |
? |
2" diag. 4 : 3 |
| Display Resolution & Type |
240 x 240 pixels LCD (Color) |
240 x 320 pixels (~143 ppi) LCD (STN) |
320 x 320 pixels LCD (TFT/TFD) |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | ? | 1,350 mAh | ? | 900 mAh |
| Processor | ? | 1.1 GHz MediaTek MT6731 | 200 MHz Motorola MX-1 | ? |
| RAM | ? | 512 MB | ? | ? |
| Storage | ? raw hardware | 4 GB | ? raw hardware | 142 MB |
| Main Camera | - | 2 megapixel | 1 megapixel | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | 720p HD | ? | QCIF (176 x 144) |
| Front Camera | - | Yes | - | - |
| Weight |
5.01 oz (142g) |
4.5 oz (128g) |
? |
3.24 oz (92g) |
| Dimensions |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
4.31" x 2.27" x 0.83" (109 x 58 x 21 mm) |
3.46" x 2.34" x 1.1" (88 x 59 x 27.9 mm) |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
| Form Factor | Slab | Clamshell | Clamshell | Clamshell |
| Platform / OS | BlackBerry OS | (proprietary) | Palm OS | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
4G LTE: 2, 4, 5, 12, 13, 66 WCDMA: 2, 4, 5 GSM: 850, 1900 |
CDMA: 850, 1900 AMPS: 850 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | 1xRTT | LTE (Cat 4) | 1xRTT | HSDPA 3.6 |
| Features | ||||
| Flashlight | - | Yes | - | - |
| GPS / Location | n/a | Yes | n/a | Yes |
| Accessibility | ||||
| Adjustable Text Size | n/a | Yes | n/a | - |
| Hearing Aid Compatible | - | Yes | - | Yes |
| Multiple Languages | n/a | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | Yes | Yes |
| Ringer Profiles | Yes | - | - | Yes |
| Connectivity | ||||
| Bluetooth | - | Yes | - |
Yes Classic Audio |
| Infrared (IR) | - | - | Yes | - |
| USB | Yes |
Yes Micro-USB |
- | Yes |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
- | - |
| Contacts | ||||
| Picture ID | n/a | Yes | n/a | - |
| Ringer ID | n/a | Yes | n/a | - |
| Voice Dialing | n/a | - | n/a | - |
| Customization | ||||
| Custom Graphics | n/a | Yes | n/a | Yes |
| Custom Ringtones | n/a | - | n/a | Yes |
| Real-Music Ringers | n/a | - | n/a | Yes |
| Data & Network | ||||
| Data Tethering | n/a | - | n/a | - |
| WAP / Web Browser | n/a | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | n/a | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - | - |
| Touch Screen | - | - | Yes | - |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | - |
| Messaging | ||||
| Email Client | n/a | Yes | n/a | Yes |
| Instant Messaging | n/a | Yes | n/a | Yes |
| MMS | n/a | Yes | n/a | Yes |
| Text Messaging Templates | n/a | Yes | n/a | Yes |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | n/a | Yes | n/a | - |
| Productivity | ||||
| Alarm | n/a | Yes | n/a | Yes |
| Calculator | n/a | Yes | n/a | Yes |
| Calendar | n/a | Yes | n/a | Yes |
| To-Do List | n/a | - | n/a | - |
| Voice Memo | n/a | Yes | n/a | Yes |
| Software | ||||
| Games | n/a | - | n/a | Yes |
| Java (J2ME) | n/a | - | n/a | Yes |
| Voice | ||||
| HD Voice | - | Yes | - | - |
| Headset Jack (2.5 mm) | n/a | - | n/a | - |
| Speaker Phone | - | Yes | - | Yes |
| BlackBerry 7750 | Nuu F4L | Samsung SPH-i550 | ZTE Z221 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | BlackBerry 7750 | Nuu F4L | Samsung SPH-i550 | ZTE Z221 |
