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| Phone | BLU S1 | ZTE Blade Spark | Samsung SGH-X640 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Not yet released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
5.2" diag. 16 : 9 |
5.5" diag. 16 : 9 |
? |
| Display Resolution & Type |
720 x 1280 pixels (~282 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~267 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
| Display Refresh | 60 Hz | 60 Hz | ? |
| Battery | 2,800 mAh | 3,140 mAh | 800 mAh |
| Processor | 1.5 GHz MediaTek 6750 | 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) | ? |
| RAM | 2 GB | 2 GB | ? |
| Storage | 16 GB | 16 GB | ? raw hardware |
| Main Camera | 13 megapixel | 13 megapixel | Yes |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | 1080p HD | 1080p HD | - |
| Front Camera | 5 megapixel | 5 megapixel | - |
| Weight |
4.83 oz (137g) |
6.12 oz (173g) |
3 oz (85g) |
| Dimensions |
5.8" x 2.87" x 0.33" (147 x 73 x 8.4 mm) |
6.14" x 3.06" x 0.38" (156 x 78 x 9.7 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
| Form Factor | Slab | Slab | Clamshell |
| Platform / OS | Android | Android | (proprietary) |
| Network Bands |
4G LTE: 2, 3, 4, 5, 7, 12, 17, 25, 26, 41 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
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| Data Technology | LTE (Cat 6) | LTE (Cat 4) | GPRS |
| Features | |||
| Fingerprint Reader |
Yes stand-alone |
Yes stand-alone |
- |
| Flashlight | Yes | Yes | - |
| Accessibility | |||
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
- |
| Multiple Languages | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | - |
| Connectivity | |||
| Bluetooth | Yes | Yes | - |
| USB |
Yes Micro-USB |
Yes USB Type C |
- |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||
| Picture ID | n/a | n/a | Yes |
| Ringer ID | n/a | n/a | Yes |
| Customization | |||
| Custom Graphics | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | Yes |
| Data & Network | |||
| WAP / Web Browser | n/a | n/a | Yes |
| Input | |||
| Predictive Text Entry | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
- |
| Memory | |||
| Memory Card Slot | Yes | Yes | - |
| Messaging | |||
| EMS / Picture Messaging | n/a | n/a | Yes |
| MMS | n/a | n/a | Yes |
| Text Messaging Templates | n/a | n/a | Yes |
| Music | |||
| FM Radio | Yes | - | - |
| Headphone Jack (3.5mm) | Yes | Yes | - |
| Productivity | |||
| Alarm | n/a | n/a | Yes |
| Calculator | n/a | n/a | Yes |
| Calendar | n/a | n/a | Yes |
| To-Do List | n/a | n/a | Yes |
| Voice Memo | n/a | n/a | Yes |
| Software | |||
| Games | n/a | n/a | Yes |
| Java (J2ME) | n/a | n/a | Yes |
| Voice | |||
| HD Voice | Yes | Yes | - |
| Headset Jack (2.5 mm) | n/a | n/a | Yes |
| Speaker Phone | Yes | Yes | Yes |
| BLU S1 | ZTE Blade Spark | Samsung SGH-X640 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | BLU S1 | ZTE Blade Spark | Samsung SGH-X640 |
