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| Phone | Casio G'zOne Rock | Samsung Galaxy J2 / J2 Pure / J2 Dash | Samsung Galaxy Ring / Prevail 2 | Apple iPhone 4 (CDMA) | Samsung SGH-X640 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
2.1" diag. 4 : 3 |
5" diag. 16 : 9 |
4" diag. 5 : 3 |
3.5" diag. 5 : 3 |
? |
| Display Resolution & Type |
240 x 320 pixels (~190 ppi) LCD (TFT/TFD) |
540 x 960 pixels (~220 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
640 x 960 pixels (~330 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | 60 Hz | ? |
| Battery | 1,150 mAh | 2,600 mAh | 1,750 mAh | ? | 800 mAh |
| Processor | ? | 1.4 GHz Samsung Exynos 7570 | 1.4 GHz Qualcomm Snapdragon S2 MSM8655 | ? | ? |
| RAM | ? | 2 GB | 1 GB | ? | ? |
| Storage | ? raw hardware | 16 GB | 4 GB | 8 GB * | ? raw hardware |
| Main Camera | 2 megapixel | 8 megapixel | 5 megapixel | 5 megapixel | Yes |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | ? | 1080p HD | 720p HD | 720p HD | - |
| Front Camera | - | 5 megapixel | 1 megapixel | Yes | - |
| Weight |
4.4 oz (125g) |
5.43 oz (154g) |
3.4 oz (96g) |
4.8 oz (136g) |
3 oz (85g) |
| Dimensions |
4.1" x 2" x 0.9" (104 x 51 x 22.9 mm) |
5.65" x 2.84" x 0.35" (144 x 72 x 8.9 mm) |
4.83" x 2.48" x 0.47" (123 x 63 x 11.9 mm) |
4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
| Form Factor | Clamshell | Slab | Slab | Slab | Clamshell |
| Platform / OS | (proprietary) | Android | Android | iOS | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
CDMA: 800, 850, 1900 |
CDMA: 850, 1900 |
GSM: 900, 1800, 1900 |
|
| Data Technology | EVDO rA | LTE (Cat 4) | EVDO rA | EVDO rA | GPRS |
| Features | |||||
| Flashlight | Yes | Yes | - | - | - |
| GPS / Location | Yes | n/a | n/a | n/a | - |
| Ruggedized | Yes | - | - | - | - |
| Water-Resistant | Yes | - | - | - | - |
| Accessibility | |||||
| Adjustable Text Size | - | n/a | n/a | n/a | - |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4 (very compatible) |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | Yes | n/a | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | - | - |
| Alerts | |||||
| Extra Display | Yes | - | - | - | - |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | - |
| Mobile Hotspot | - | n/a | n/a | n/a | - |
| USB | Yes |
Yes Micro-USB |
Yes | Yes | - |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 a,b,g,n) |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||||
| Picture ID | Yes | n/a | n/a | n/a | Yes |
| Ringer ID | Yes | n/a | n/a | n/a | Yes |
| Voice Dialing | Yes | n/a | n/a | n/a | - |
| Customization | |||||
| Custom Graphics | Yes | n/a | n/a | n/a | Yes |
| Custom Ringtones | Yes | n/a | n/a | n/a | Yes |
| Real-Music Ringers | Yes | n/a | n/a | n/a | - |
| Data & Network | |||||
| Data Tethering | Yes | n/a | n/a | n/a | - |
| WAP / Web Browser | Yes | n/a | n/a | n/a | Yes |
| Input | |||||
| Predictive Text Entry | Yes | n/a | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
- |
| Memory | |||||
| Memory Card Slot | Yes | Yes | Yes | - | - |
| Messaging | |||||
| Email Client | Yes | n/a | n/a | n/a | - |
| EMS / Picture Messaging | - | n/a | n/a | n/a | Yes |
| Instant Messaging | Yes | n/a | n/a | n/a | - |
| MMS | Yes | n/a | n/a | n/a | Yes |
| Text Messaging Templates | Yes | n/a | n/a | n/a | Yes |
| Music | |||||
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes | - |
| Music Player | Yes | n/a | n/a | n/a | - |
| Photo & Video | |||||
| DLNA | - | - | Yes | - | - |
| TV Output | - | - | - | Yes | - |
| Video Calling | - | n/a | n/a | n/a | - |
| Productivity | |||||
| Alarm | Yes | n/a | n/a | n/a | Yes |
| Calculator | Yes | n/a | n/a | n/a | Yes |
| Calendar | Yes | n/a | n/a | n/a | Yes |
| To-Do List | - | n/a | n/a | n/a | Yes |
| Voice Memo | Yes | n/a | n/a | n/a | Yes |
| Software | |||||
| BREW | Yes | n/a | n/a | n/a | - |
| Games | Yes | n/a | n/a | n/a | Yes |
| Java (J2ME) | - | n/a | n/a | n/a | Yes |
| Voice | |||||
| Headset Jack (2.5 mm) | Yes | n/a | n/a | n/a | Yes |
| Push-To-Talk | Yes | - | - | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| Casio G'zOne Rock | Samsung Galaxy J2 / J2 Pure / J2 Dash | Samsung Galaxy Ring / Prevail 2 | Apple iPhone 4 (CDMA) | Samsung SGH-X640 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Casio G'zOne Rock | Samsung Galaxy J2 / J2 Pure / J2 Dash | Samsung Galaxy Ring / Prevail 2 | Apple iPhone 4 (CDMA) | Samsung SGH-X640 |
