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| Phone | Samsung Galaxy S II Skyrocket | Siemens CF75 | Samsung Jack i637 | NEC 525 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4.5" diag. 5 : 3 |
? |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
480 x 800 pixels (~207 ppi) AMOLED |
128 x 160 pixels LCD (STN) |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
162 x 216 pixels LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | ? |
| Battery | 1,850 mAh | 600 mAh | 1,480 mAh | 800 mAh |
| Processor | 1.5 GHz Qualcomm Snapdragon S3 APQ8060 | ? | ? | ? |
| RAM | 1 GB | ? | ? | ? |
| Storage | 16 GB | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 8 megapixel | Yes | 3 megapixel | Yes |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | - | ? | - |
| Front Camera | 2 megapixel | - | - | - |
| Weight |
4.71 oz (133g) |
3.17 oz (90g) |
3.6 oz (102g) |
4.03 oz (114g) |
| Dimensions |
5.12" x 2.72" x 0.35" (130 x 69 x 9 mm) |
3.43" x 1.73" x 1.26" (87 x 44 x 32 mm) |
4.4" x 2.4" x 0.5" (112 x 61 x 12.7 mm) |
4.12" x 1.88" x 1.06" (105 x 48 x 26.9 mm) |
| Form Factor | Slab | Clamshell | Slab | Clamshell |
| Platform / OS | Android | (proprietary) | Windows Mobile Standard | (proprietary) |
| Network Bands |
4G LTE: 4, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
| Data Technology | LTE (Cat 3) | EDGE | HSDPA 3.6 | GPRS |
| Features | ||||
| GPS / Location | n/a | - | n/a | - |
| Accessibility | ||||
| Hearing Aid Compatible | Yes | - | Yes | - |
| Multiple Languages | n/a | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | - | Yes |
| Alerts | ||||
| Extra Display | - | Yes | - | Yes |
| Ringer Profiles | - | - | Yes | Yes |
| Connectivity | ||||
| Bluetooth | Yes | - | Yes | - |
| Infrared (IR) | - | Yes | - | Yes |
| Mobile Hotspot | n/a | - | n/a | - |
| NFC | Yes | - | - | - |
| USB |
Yes Micro-USB |
Yes | Yes | Yes |
| Wi-Fi |
Yes 4 (802.11 a,b,g,n) |
- |
Yes 802.11 b,g |
- |
| Contacts | ||||
| Picture ID | n/a | - | n/a | Yes |
| Ringer ID | n/a | - | n/a | Yes |
| Voice Dialing | n/a | - | n/a | Yes |
| Customization | ||||
| Custom Graphics | n/a | Yes | n/a | Yes |
| Custom Ringtones | n/a | Yes | n/a | Yes |
| Real-Music Ringers | n/a | - | n/a | - |
| Data & Network | ||||
| Data Tethering | n/a | Yes | n/a | Yes |
| WAP / Web Browser | n/a | Yes | n/a | Yes |
| Input | ||||
| Predictive Text Entry | n/a | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes | - |
| Touch Screen | Yes | - | - | - |
| Memory | ||||
| Memory Card Slot | Yes | - | Yes | - |
| Messaging | ||||
| Email Client | n/a | Yes | n/a | Yes |
| EMS / Picture Messaging | n/a | Yes | n/a | Yes |
| Instant Messaging | n/a | - | n/a | - |
| MMS | n/a | Yes | n/a | Yes |
| Text Messaging Templates | n/a | Yes | n/a | - |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | - | - | - |
| Music Player | n/a | - | n/a | - |
| Photo & Video | ||||
| DLNA | Yes | - | - | - |
| TV Output | Yes | - | - | - |
| Productivity | ||||
| Alarm | n/a | Yes | n/a | Yes |
| Calculator | n/a | Yes | n/a | Yes |
| Calendar | n/a | Yes | n/a | Yes |
| To-Do List | n/a | Yes | n/a | Yes |
| Voice Memo | n/a | Yes | n/a | Yes |
| Software | ||||
| Games | n/a | Yes | n/a | Yes |
| Java (J2ME) | n/a | Yes | n/a | Yes |
| Voice | ||||
| Headset Jack (2.5 mm) | n/a | - | n/a | Yes |
| Push-To-Talk | - | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes | - |
| Samsung Galaxy S II Skyrocket | Siemens CF75 | Samsung Jack i637 | NEC 525 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Galaxy S II Skyrocket | Siemens CF75 | Samsung Jack i637 | NEC 525 |
