Compare Phones
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| Phone | Samsung SGH-X640 | Samsung Galaxy J2 / J2 Pure / J2 Dash | Motorola Rival A455 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? |
5" diag. 16 : 9 |
2.2" diag. 4 : 3 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
540 x 960 pixels (~220 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~131 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? |
| Battery | 800 mAh | 2,600 mAh | 940 mAh |
| Processor | ? | 1.4 GHz Samsung Exynos 7570 | ? |
| RAM | ? | 2 GB | ? |
| Storage | ? raw hardware | 16 GB | ? raw hardware |
| Main Camera | Yes | 8 megapixel | 2 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | - | 1080p HD | QVGA (320 x 240) |
| Front Camera | - | 5 megapixel | - |
| Weight |
3 oz (85g) |
5.43 oz (154g) |
4.48 oz (127g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
5.65" x 2.84" x 0.35" (144 x 72 x 8.9 mm) |
3.82" x 1.96" x 0.73" (97 x 50 x 18.5 mm) |
| Form Factor | Clamshell | Slab | Slide |
| Platform / OS | (proprietary) | Android | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 |
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| Data Technology | GPRS | LTE (Cat 4) | EVDO r0 |
| Features | |||
| Flashlight | - | Yes | - |
| GPS / Location | - | n/a | Yes |
| Accessibility | |||
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | n/a | Yes |
| TTY/TDD (Digital) | - | Yes | Yes |
| Connectivity | |||
| Bluetooth | - | Yes | Yes |
| USB | - |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||
| Picture ID | Yes | n/a | Yes |
| Ringer ID | Yes | n/a | Yes |
| Voice Dialing | - | n/a | Yes |
| Customization | |||
| Custom Graphics | Yes | n/a | Yes |
| Custom Ringtones | Yes | n/a | Yes |
| Real-Music Ringers | - | n/a | Yes |
| Data & Network | |||
| Data Tethering | - | n/a | Yes |
| WAP / Web Browser | Yes | n/a | Yes |
| Input | |||
| Predictive Text Entry | Yes | n/a | - |
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes |
| Touch Screen | - |
Yes Capacitive |
Yes |
| Memory | |||
| Memory Card Slot | - | Yes | Yes |
| Messaging | |||
| Email Client | - | n/a | Yes |
| EMS / Picture Messaging | Yes | n/a | Yes |
| Instant Messaging | - | n/a | Yes |
| MMS | Yes | n/a | Yes |
| Text Messaging Templates | Yes | n/a | Yes |
| Music | |||
| Headphone Jack (3.5mm) | - | Yes | Yes |
| Music Player | - | n/a | Yes |
| Productivity | |||
| Alarm | Yes | n/a | Yes |
| Calculator | Yes | n/a | Yes |
| Calendar | Yes | n/a | Yes |
| To-Do List | Yes | n/a | - |
| Voice Memo | Yes | n/a | Yes |
| Software | |||
| BREW | - | n/a | Yes |
| Games | Yes | n/a | Yes |
| Java (J2ME) | Yes | n/a | - |
| Voice | |||
| Headset Jack (2.5 mm) | Yes | n/a | - |
| Speaker Phone | Yes | Yes | Yes |
| Samsung SGH-X640 | Samsung Galaxy J2 / J2 Pure / J2 Dash | Motorola Rival A455 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Samsung Galaxy J2 / J2 Pure / J2 Dash | Motorola Rival A455 |
