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| Phone | Nuu F4L | Samsung Galaxy S II Skyrocket | CAT S61 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Not yet released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
2.8" diag. 4 : 3 |
4.5" diag. 5 : 3 |
5.2" diag. 16 : 9 |
| Display Resolution & Type |
240 x 320 pixels (~143 ppi) LCD (STN) |
480 x 800 pixels (~207 ppi) AMOLED |
1080 x 1920 pixels (~424 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | 60 Hz | 60 Hz |
| Battery | 1,350 mAh | 1,850 mAh | 4,500 mAh |
| Processor | 1.1 GHz MediaTek MT6731 | 1.5 GHz Qualcomm Snapdragon S3 APQ8060 | 2.2 GHz Qualcomm Snapdragon 630 |
| RAM | 512 MB | 1 GB | 4 GB |
| Storage | 4 GB | 16 GB | 64 GB |
| Main Camera | 2 megapixel | 8 megapixel | 16 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | 720p HD | 1080p HD | 4K UHD |
| Front Camera | Yes | 2 megapixel | 8 megapixel |
| Weight |
4.5 oz (128g) |
4.71 oz (133g) |
9.03 oz (256g) |
| Dimensions |
4.31" x 2.27" x 0.83" (109 x 58 x 21 mm) |
5.12" x 2.72" x 0.35" (130 x 69 x 9 mm) |
5.91" x 2.99" x 0.51" (150 x 76 x 13 mm) |
| Form Factor | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | Android | Android |
| Network Bands |
4G LTE: 2, 4, 5, 12, 13, 66 WCDMA: 2, 4, 5 GSM: 850, 1900 |
4G LTE: 4, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 25, 26, 28, 29, 66 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
| Data Technology | LTE (Cat 4) | LTE (Cat 3) | LTE (Cat 13) |
| Features | |||
| Barometer | - | - | Yes |
| Flashlight | Yes | - | Yes |
| GPS / Location | Yes | n/a | n/a |
| Ruggedized | - | - | Yes |
| Water-Resistant | - | - |
Yes IPX8 (SCUBA) |
| Accessibility | |||
| Adjustable Text Size | Yes | n/a | n/a |
| Hearing Aid Compatible | Yes | Yes | Yes |
| Multiple Languages | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | Yes | - |
| Alerts | |||
| Extra Display | Yes | - | - |
| Connectivity | |||
| Bluetooth |
Yes |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | - | n/a | n/a |
| NFC | - | Yes | Yes |
| USB |
Yes Micro-USB |
Yes Micro-USB |
Yes USB Type C |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 a,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | |||
| Picture ID | Yes | n/a | n/a |
| Ringer ID | Yes | n/a | n/a |
| Voice Dialing | - | n/a | n/a |
| Customization | |||
| Custom Graphics | Yes | n/a | n/a |
| Custom Ringtones | - | n/a | n/a |
| Real-Music Ringers | - | n/a | n/a |
| Data & Network | |||
| Data Tethering | - | n/a | n/a |
| Dual-SIM | - | - | Yes * |
| WAP / Web Browser | Yes | n/a | n/a |
| Input | |||
| Predictive Text Entry | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes |
| Touch Screen | - | Yes | Yes |
| Memory | |||
| Memory Card Slot | Yes | Yes | Yes |
| Messaging | |||
| Email Client | Yes | n/a | n/a |
| Instant Messaging | Yes | n/a | n/a |
| MMS | Yes | n/a | n/a |
| Text Messaging Templates | Yes | n/a | n/a |
| Music | |||
| FM Radio | Yes | - | Yes |
| Headphone Jack (3.5mm) | Yes | Yes | Yes |
| Music Player | Yes | n/a | n/a |
| Photo & Video | |||
| DLNA | - | Yes | - |
| TV Output | - | Yes | - |
| Power | |||
| Fast Charging | - | - | Yes |
| Productivity | |||
| Alarm | Yes | n/a | n/a |
| Calculator | Yes | n/a | n/a |
| Calendar | Yes | n/a | n/a |
| To-Do List | - | n/a | n/a |
| Voice Memo | Yes | n/a | n/a |
| Software | |||
| Games | - | n/a | n/a |
| Voice | |||
| HD Voice | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Nuu F4L | Samsung Galaxy S II Skyrocket | CAT S61 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nuu F4L | Samsung Galaxy S II Skyrocket | CAT S61 |
