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| Phone | ZTE Z998 / Unico LTE | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) | AT&T Cingular Flip IV / Cricket Debut Flip | Sony Ericsson K850 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4.5" diag. 16 : 9 |
? |
2.8" diag. 4 : 3 |
2.2" diag. 4 : 3 |
| Display Resolution & Type |
540 x 960 pixels (~245 ppi) LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
240 x 320 pixels (~143 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | ? |
| Battery | 2,070 mAh | 1,490 mAh | 1,450 mAh | ? |
| Processor | 1.2 GHz Qualcomm Snapdragon 400 MSM8930 | 400 MHz Intel XScale | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | ? |
| RAM | 1 GB | ? | 512 MB | ? |
| Storage | 4 GB | ? raw hardware | 4 GB | ? raw hardware |
| Main Camera | 5 megapixel | Yes | 2 megapixel | 5 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 720p HD | QCIF (176 x 144) | WVGA / 480p | ? |
| Front Camera | 1 megapixel | - | - | - |
| Weight |
4.8 oz (136g) |
7.41 oz (210g) |
4.59 oz (130g) |
4.2 oz (119g) |
| Dimensions |
5.2" x 2.6" x 0.4" (132 x 66 x 10.2 mm) |
4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm) |
4.13" x 2.14" x 0.74" (105 x 54 x 18.9 mm) |
4" x 1.9" x 0.7" (102 x 48 x 17.8 mm) |
| Form Factor | Slab | Slide | Clamshell | Slab |
| Platform / OS | Android | Windows Mobile Professional | (proprietary) | (proprietary) |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 14 WCDMA: 2, 4, 5 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
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| Data Technology | LTE (Cat 3) | GPRS | LTE (Cat 4) | HSDPA 3.6 |
| Features | ||||
| GPS / Location | n/a | n/a | Yes | - |
| Accessibility | ||||
| Adjustable Text Size | n/a | n/a | Yes | - |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
- |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | n/a | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Infrared (IR) | - | Yes | - | - |
| Mobile Hotspot | n/a | n/a | Yes | - |
| USB |
Yes Micro-USB |
Yes |
Yes Micro-USB |
Yes |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
Yes |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | ||||
| Picture ID | n/a | n/a | Yes | Yes |
| Ringer ID | n/a | n/a | - | Yes |
| Voice Dialing | n/a | n/a | Yes | Yes |
| Customization | ||||
| Custom Graphics | n/a | n/a | Yes | Yes |
| Custom Ringtones | n/a | n/a | Yes | Yes |
| Real-Music Ringers | n/a | n/a | Yes | Yes |
| Data & Network | ||||
| Data Tethering | n/a | n/a | - | Yes |
| WAP / Web Browser | n/a | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | n/a | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | - |
| Touch Screen |
Yes Capacitive |
Yes | - | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | n/a | n/a | Yes | Yes |
| Instant Messaging | n/a | n/a | - | - |
| MMS | n/a | n/a | Yes | Yes |
| Text Messaging Templates | n/a | n/a | - | Yes |
| Music | ||||
| FM Radio | - | - | Yes | Yes |
| Headphone Jack (3.5mm) | Yes | - | Yes | - |
| Music Player | n/a | n/a | Yes | Yes |
| Photo & Video | ||||
| Video Calling | n/a | n/a | - | Yes * |
| Productivity | ||||
| Alarm | n/a | n/a | Yes | Yes |
| Calculator | n/a | n/a | Yes | Yes |
| Calendar | n/a | n/a | Yes | Yes |
| To-Do List | n/a | n/a | - | Yes |
| Voice Memo | n/a | n/a | Yes | Yes |
| Software | ||||
| Games | n/a | n/a | Yes | 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 | Yes | Yes |
| * Some versions only | ||||
| ZTE Z998 / Unico LTE | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) | AT&T Cingular Flip IV / Cricket Debut Flip | Sony Ericsson K850 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z998 / Unico LTE | Siemens SX66 / MDA III / PDA2K (HTC Blue Angel) | AT&T Cingular Flip IV / Cricket Debut Flip | Sony Ericsson K850 |
