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| Phone | ZTE Z998 / Unico LTE | Siemens CT66 / C66 / C65 / C71 / C70 | Sony Ericsson W600i / W550i | Cricket Debut S2 / AT&T Calypso 4 | Sanyo RL-4920 |
| Current U.S. Carriers | (none) | (none) | (none) |
AT&T Cricket |
(none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
4.5" diag. 16 : 9 |
? | ? |
6.1" diag. 19.5 : 9 |
? |
| Display Resolution & Type |
540 x 960 pixels (~245 ppi) LCD (TFT/TFD) |
130 x 130 pixels LCD (Color) |
176 x 220 pixels LCD (TFT/TFD) |
720 x 1560 pixels (~282 ppi) LCD (TFT/TFD) |
128 x 112 pixels LCD (Color) |
| Display Refresh | 60 Hz | ? | ? | 60 Hz | ? |
| Battery | 2,070 mAh | 600 mAh | ? | 3,000 mAh | 1,700 mAh |
| Processor | 1.2 GHz Qualcomm Snapdragon 400 MSM8930 | ? | ? | 2 GHz MediaTek Helio A22 (MT6761WB) | ? |
| RAM | 1 GB | ? | ? | 3 GB | ? |
| Storage | 4 GB | ? raw hardware | ? raw hardware | 64 GB | ? raw hardware |
| Main Camera | 5 megapixel | Yes | 1 megapixel | 8 megapixel | - |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | 720p HD | - | ? | ? | - |
| Front Camera | 1 megapixel | - | - | 5 megapixel | - |
| Weight |
4.8 oz (136g) |
3 oz (85g) |
4.2 oz (119g) |
5.64 oz (160g) |
4.03 oz (114g) |
| Dimensions |
5.2" x 2.6" x 0.4" (132 x 66 x 10.2 mm) |
4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm) |
3.66" x 1.83" x 0.89" (93 x 46 x 22.6 mm) |
6.11" x 2.87" x 0.34" (155 x 73 x 8.6 mm) |
4.22" x 1.85" x 0.85" (107 x 47 x 21.6 mm) |
| Form Factor | Slab | Slab | Swivel | Slab | Slab |
| Platform / OS | Android | (proprietary) | (proprietary) | Android | (proprietary) |
| Network Bands |
GSM: 850, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30, 66 WCDMA: 1, 2, 4, 5, 8 |
CDMA: 850, 1900 AMPS: 850 |
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| Data Technology | LTE (Cat 3) | GPRS | EDGE | LTE (Cat 4) | 1xRTT |
| Features | |||||
| Flashlight | - | - | Yes | Yes | - |
| GPS / Location | n/a | - | - | n/a | Yes |
| Accessibility | |||||
| Adjustable Text Size | n/a | - | - | n/a | - |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
- | - |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | n/a | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | - | Yes |
| Alerts | |||||
| Ringer Profiles | - | Yes | - | - | - |
| Connectivity | |||||
| Bluetooth | Yes | - | Yes | Yes | - |
| Infrared (IR) | - | Yes | Yes | - | - |
| Mobile Hotspot | n/a | - | - | n/a | - |
| USB |
Yes Micro-USB |
Yes | Yes |
Yes USB Type C |
Yes |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- | - |
Yes 5 (802.11 a,ac,b,g,n) |
- |
| Contacts | |||||
| Picture ID | n/a | Yes | Yes | n/a | Yes |
| Ringer ID | n/a | Yes | Yes | n/a | Yes |
| Voice Dialing | n/a | - | Yes | n/a | Yes |
| Customization | |||||
| Changeable Body Plates | - | Yes | Yes | - | - |
| Custom Graphics | n/a | Yes | Yes | n/a | Yes |
| Custom Ringtones | n/a | Yes | Yes | n/a | Yes |
| Real-Music Ringers | n/a | - | - | n/a | - |
| Data & Network | |||||
| Data Tethering | n/a | - | Yes | n/a | - |
| WAP / Web Browser | n/a | Yes | Yes | n/a | Yes |
| Input | |||||
| Predictive Text Entry | n/a | Yes | Yes | n/a | Yes |
| Side Keys | Yes | - | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
- | - |
Yes Capacitive |
- |
| Memory | |||||
| Memory Card Slot | Yes | - | - | Yes | - |
| Messaging | |||||
| Email Client | n/a | - | Yes | n/a | - |
| EMS / Picture Messaging | n/a | Yes | Yes | n/a | - |
| Instant Messaging | n/a | - | - | n/a | - |
| MMS | n/a | Yes | Yes | n/a | - |
| Text Messaging Templates | n/a | Yes | Yes | n/a | - |
| Music | |||||
| FM Radio | - | - | Yes | - | - |
| Headphone Jack (3.5mm) | Yes | - | - | Yes | - |
| Music Player | n/a | - | Yes | n/a | - |
| Power | |||||
| Fast Charging | - | - | - | Yes | - |
| Productivity | |||||
| Alarm | n/a | Yes | Yes | n/a | Yes |
| Calculator | n/a | Yes | Yes | n/a | Yes |
| Calendar | n/a | Yes | Yes | n/a | Yes |
| To-Do List | n/a | Yes | Yes | n/a | Yes |
| Voice Memo | n/a | Yes | Yes | n/a | Yes |
| Software | |||||
| Games | n/a | Yes | Yes | n/a | Yes |
| Java (J2ME) | n/a | Yes | Yes | n/a | Yes |
| Voice | |||||
| Call Screening | - | Yes | - | - | Yes |
| HD Voice | - | - | - | Yes | - |
| Headset Jack (2.5 mm) | n/a | - | - | n/a | Yes |
| Push-To-Talk | - | Yes * | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| ZTE Z998 / Unico LTE | Siemens CT66 / C66 / C65 / C71 / C70 | Sony Ericsson W600i / W550i | Cricket Debut S2 / AT&T Calypso 4 | Sanyo RL-4920 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z998 / Unico LTE | Siemens CT66 / C66 / C65 / C71 / C70 | Sony Ericsson W600i / W550i | Cricket Debut S2 / AT&T Calypso 4 | Sanyo RL-4920 |
