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| Phone | ZTE Prelude / Avail 2 | Samsung SGH-X640 | Samsung SCH-A890 | Samsung SCH-A570 | Amazon Fire |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
3.5" diag. 5 : 3 |
? | ? | ? |
4.7" diag. 16 : 9 |
| Display Resolution & Type |
320 x 480 pixels (~165 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
128 x 160 pixels LCD (STN) |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | ? | ? |
| Battery | 1,500 mAh | 800 mAh | ? | ? | 2,400 mAh |
| Processor | 1 GHz Qualcomm Snapdragon MSM7225A | ? | ? | ? | 2.2 GHz Qualcomm Snapdragon 800 |
| RAM | 512 MB | ? | ? | ? | 2 GB |
| Storage | 4 GB | ? raw hardware | ? raw hardware | ? raw hardware | 32 GB * |
| Main Camera | 2 megapixel | Yes | 1 megapixel | - | 13 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | VGA (640 x 480) | - | ? | - | 1080p HD |
| Front Camera | - | - | - | - | 2 megapixel |
| Weight |
4.4 oz (125g) |
3 oz (85g) |
2.8 oz (79g) |
3.6 oz (102g) |
5.64 oz (160g) |
| Dimensions |
4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
3.5" x 1.97" x 0.98" (89 x 50 x 24.9 mm) |
3.3" x 1.8" x 0.9" (84 x 46 x 22.9 mm) |
5.5" x 2.6" x 0.35" (140 x 66 x 8.9 mm) |
| Form Factor | Slab | Clamshell | Clamshell | Clamshell | Slab |
| Platform / OS | Android | (proprietary) | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 1900 |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 |
CDMA: 850, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 17 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
| Data Technology | HSPA 7.2 | GPRS | EVDO r0 | 1xRTT | LTE (Cat 4) |
| Features | |||||
| Flashlight | - | - | - | - | Yes |
| GPS / Location | n/a | - | Yes | Yes | Yes |
| Accessibility | |||||
| Adjustable Text Size | 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 | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes | Yes |
| Alerts | |||||
| Extra Display | - | - | Yes | Yes | - |
| Ringer Profiles | - | - | Yes | - | - |
| Connectivity | |||||
| Bluetooth | Yes | - | - | - | Yes |
| Mobile Hotspot | n/a | - | - | - | Yes |
| NFC | - | - | - | - | Yes |
| USB | Yes | - | - | - |
Yes Micro-USB |
| 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 | - | Yes |
| Ringer ID | n/a | Yes | Yes | - | Yes |
| Voice Dialing | n/a | - | Yes | Yes | Yes |
| Customization | |||||
| Custom Graphics | n/a | Yes | Yes | Yes | - |
| Custom Ringtones | n/a | Yes | Yes | Yes | Yes |
| Real-Music Ringers | n/a | - | - | - | - |
| Data & Network | |||||
| Data Tethering | n/a | - | - | - | Yes |
| WAP / Web Browser | n/a | Yes | Yes | Yes | Yes |
| Input | |||||
| Predictive Text Entry | n/a | Yes | Yes | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
- | - | - |
Yes Capacitive |
| Memory | |||||
| Memory Card Slot | Yes | - | - | - | - |
| Messaging | |||||
| Email Client | n/a | - | - | - | Yes |
| EMS / Picture Messaging | n/a | Yes | - | Yes | - |
| Instant Messaging | n/a | - | - | - | - |
| MMS | n/a | Yes | Yes | - | Yes |
| Text Messaging Templates | n/a | Yes | Yes | Yes | Yes |
| Music | |||||
| Headphone Jack (3.5mm) | Yes | - | - | - | Yes |
| Music Player | n/a | - | - | - | Yes |
| Stereo Speakers | - | - | - | - | Yes |
| Photo & Video | |||||
| Miracast | - | - | - | - | Yes |
| TV Output | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | n/a | Yes | Yes | Yes | Yes |
| Calculator | n/a | Yes | Yes | Yes | Yes |
| Calendar | n/a | Yes | Yes | Yes | Yes |
| To-Do List | n/a | Yes | Yes | Yes | - |
| Voice Memo | n/a | Yes | Yes | Yes | Yes |
| Software | |||||
| BREW | n/a | - | Yes | Yes | - |
| Games | n/a | Yes | Yes | Yes | Yes |
| Java (J2ME) | n/a | Yes | - | - | - |
| Voice | |||||
| HD Voice | - | - | - | - | Yes |
| Headset Jack (2.5 mm) | n/a | Yes | Yes | Yes | - |
| Speaker Phone | Yes | Yes | - | - | Yes |
| ZTE Prelude / Avail 2 | Samsung SGH-X640 | Samsung SCH-A890 | Samsung SCH-A570 | Amazon Fire | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Prelude / Avail 2 | Samsung SGH-X640 | Samsung SCH-A890 | Samsung SCH-A570 | Amazon Fire |
