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| Phone | Samsung SGH-X640 | ZTE C88 | Samsung Impression SGH-A877 | ZTE Prelude / Avail 2 | Amazon Fire |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? |
2" diag. 4 : 3 |
3.2" diag. 5 : 3 |
3.5" diag. 5 : 3 |
4.7" diag. 16 : 9 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
176 x 220 pixels (~141 ppi) LCD (TFT/TFD) |
240 x 400 pixels (~146 ppi) AMOLED |
320 x 480 pixels (~165 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | 60 Hz | ? |
| Battery | 800 mAh | 800 mAh | 1,000 mAh | 1,500 mAh | 2,400 mAh |
| Processor | ? | ? | ? | 1 GHz Qualcomm Snapdragon MSM7225A | 2.2 GHz Qualcomm Snapdragon 800 |
| RAM | ? | ? | ? | 512 MB | 2 GB |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | 4 GB | 32 GB * |
| Main Camera | Yes | Yes | 3 megapixel | 2 megapixel | 13 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | - | QVGA (320 x 240) | VGA (640 x 480) | 1080p HD |
| Front Camera | - | - | - | - | 2 megapixel |
| Weight |
3 oz (85g) |
3.46 oz (98g) |
5.2 oz (147g) |
4.4 oz (125g) |
5.64 oz (160g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
3.85" x 1.92" x 0.7" (98 x 49 x 17.8 mm) |
4.48" x 2.28" x 0.64" (114 x 58 x 16.3 mm) |
4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm) |
5.5" x 2.6" x 0.35" (140 x 66 x 8.9 mm) |
| Form Factor | Clamshell | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | Android | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
WCDMA: 2, 5 GSM: 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 | GPRS | 1xRTT | HSDPA 3.6 | HSPA 7.2 | LTE (Cat 4) |
| Features | |||||
| Flashlight | - | - | - | - | Yes |
| GPS / Location | - | Yes | Yes | n/a | Yes |
| Accessibility | |||||
| Adjustable Text Size | - | - | - | n/a | - |
| Hearing Aid Compatible | - | - | Yes | Yes | Yes |
| Multiple Languages | Yes | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | - | Yes | - | Yes | Yes |
| Alerts | |||||
| Extra Display | - | Yes | - | - | - |
| Ringer Profiles | - | - | Yes | - | - |
| Connectivity | |||||
| Bluetooth |
- |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | - | - | - | n/a | Yes |
| NFC | - | - | - | - | Yes |
| USB | - |
Yes Micro-USB |
Yes | 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 | Yes | - | Yes | n/a | Yes |
| Ringer ID | Yes | Yes | Yes | n/a | Yes |
| Voice Dialing | - | Yes | - | n/a | Yes |
| Customization | |||||
| Custom Graphics | Yes | Yes | Yes | n/a | - |
| Custom Ringtones | Yes | Yes | Yes | n/a | Yes |
| Real-Music Ringers | - | Yes | Yes | n/a | - |
| Data & Network | |||||
| Data Tethering | - | - | Yes | n/a | Yes |
| WAP / Web Browser | Yes | Yes | Yes | n/a | Yes |
| Input | |||||
| Predictive Text Entry | Yes | Yes | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes | - | - |
| Touch Screen | - | - | Yes | Yes | Yes |
| Memory | |||||
| Memory Card Slot | - | - | Yes | Yes | - |
| Messaging | |||||
| Email Client | - | Yes | Yes | n/a | Yes |
| EMS / Picture Messaging | Yes | - | - | n/a | - |
| Instant Messaging | - | Yes | Yes | n/a | - |
| MMS | Yes | Yes | Yes | n/a | Yes |
| Text Messaging Templates | Yes | Yes | Yes | n/a | Yes |
| Music | |||||
| Headphone Jack (3.5mm) | - | - | - | Yes | Yes |
| Music Player | - | - | Yes | n/a | Yes |
| Stereo Speakers | - | - | - | - | Yes |
| Photo & Video | |||||
| Miracast | - | - | - | - | Yes |
| TV Output | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | Yes | Yes | Yes | n/a | Yes |
| Calculator | Yes | Yes | Yes | n/a | Yes |
| Calendar | Yes | Yes | Yes | n/a | Yes |
| To-Do List | Yes | - | Yes | n/a | - |
| Voice Memo | Yes | Yes | Yes | n/a | Yes |
| Software | |||||
| BREW | - | Yes | - | n/a | - |
| Games | Yes | Yes | Yes | n/a | Yes |
| Java (J2ME) | Yes | - | Yes | n/a | - |
| Voice | |||||
| HD Voice | - | - | - | - | Yes |
| Headset Jack (2.5 mm) | Yes | - | - | n/a | - |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| Samsung SGH-X640 | ZTE C88 | Samsung Impression SGH-A877 | ZTE Prelude / Avail 2 | Amazon Fire | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | ZTE C88 | Samsung Impression SGH-A877 | ZTE Prelude / Avail 2 | Amazon Fire |
