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| Phone | Samsung SGH-X640 | Nuu F4L | HTC Desire 626s (CDMA) | ZTE Solar | CAT S61 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? |
2.8" diag. 4 : 3 |
5" diag. 16 : 9 |
4.5" diag. 16 : 9 |
5.2" diag. 16 : 9 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
240 x 320 pixels (~143 ppi) LCD (STN) |
720 x 1280 pixels (~294 ppi) LCD (TFT/TFD) |
480 x 854 pixels (~218 ppi) LCD (TFT/TFD) |
1080 x 1920 pixels (~424 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | 60 Hz | 60 Hz |
| Battery | 800 mAh | 1,350 mAh | 2,000 mAh | 2,070 mAh | 4,500 mAh |
| Processor | ? | 1.1 GHz MediaTek MT6731 | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | 1.2 GHz Qualcomm Snapdragon 200 MSM8625 | 2.2 GHz Qualcomm Snapdragon 630 |
| RAM | ? | 512 MB | 1.5 GB | 768 MB | 4 GB |
| Storage | ? raw hardware | 4 GB | 8 GB | 4 GB | 64 GB |
| Main Camera | Yes | 2 megapixel | 8 megapixel | 5 megapixel | 16 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | 720p HD | 720p HD | WVGA / 480p | 4K UHD |
| Front Camera | - | Yes | 2 megapixel | - | 8 megapixel |
| Weight |
3 oz (85g) |
4.5 oz (128g) |
4.94 oz (140g) |
5.54 oz (157g) |
9.03 oz (256g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
4.31" x 2.27" x 0.83" (109 x 58 x 21 mm) |
5.78" x 2.79" x 0.32" (147 x 71 x 8.2 mm) |
5.24" x 2.6" x 0.39" (133 x 66 x 9.9 mm) |
5.91" x 2.99" x 0.51" (150 x 76 x 13 mm) |
| Form Factor | Clamshell | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | Android | Android | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 13, 66 WCDMA: 2, 4, 5 GSM: 850, 1900 |
WCDMA: 2, 5 GSM: 850, 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 |
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| Data Technology | GPRS | LTE (Cat 4) | LTE (Cat 4) | HSPA 7.2 | LTE (Cat 13) |
| Features | |||||
| Barometer | - | - | - | - | Yes |
| Flashlight | - | Yes | Yes | - | Yes |
| GPS / Location | - | Yes | n/a | n/a | n/a |
| Ruggedized | - | - | - | - | Yes |
| Water-Resistant | - | - | - | - |
Yes IPX8 (SCUBA) |
| Accessibility | |||||
| Adjustable Text Size | - | Yes | n/a | n/a | n/a |
| Hearing Aid Compatible | - | Yes | Yes | Yes | Yes |
| Multiple Languages | Yes | Yes | n/a | n/a | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes | - |
| Alerts | |||||
| Extra Display | - | Yes | - | - | - |
| Connectivity | |||||
| Bluetooth |
- |
Yes |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | - | - | n/a | n/a | n/a |
| NFC | - | - | - | - | Yes |
| USB | - |
Yes Micro-USB |
Yes Micro-USB |
Yes Micro-USB |
Yes USB Type C |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | |||||
| Picture ID | Yes | Yes | n/a | n/a | n/a |
| Ringer ID | Yes | Yes | n/a | n/a | n/a |
| Voice Dialing | - | - | n/a | n/a | n/a |
| Customization | |||||
| Custom Graphics | Yes | Yes | n/a | n/a | n/a |
| Custom Ringtones | Yes | - | n/a | n/a | n/a |
| Real-Music Ringers | - | - | n/a | n/a | n/a |
| Data & Network | |||||
| Data Tethering | - | - | n/a | n/a | n/a |
| Dual-SIM | - | - | - | - | Yes * |
| WAP / Web Browser | Yes | Yes | n/a | n/a | n/a |
| Input | |||||
| Predictive Text Entry | Yes | Yes | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - | - | Yes | Yes | Yes |
| Memory | |||||
| Memory Card Slot | - | Yes | Yes | Yes | Yes |
| Messaging | |||||
| Email Client | - | Yes | n/a | n/a | n/a |
| EMS / Picture Messaging | Yes | - | n/a | n/a | n/a |
| Instant Messaging | - | Yes | n/a | n/a | n/a |
| MMS | Yes | Yes | n/a | n/a | n/a |
| Text Messaging Templates | Yes | Yes | n/a | n/a | n/a |
| Music | |||||
| FM Radio | - | Yes | - | - | Yes |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes | Yes |
| Music Player | - | Yes | n/a | n/a | n/a |
| Photo & Video | |||||
| DLNA | - | - | Yes | - | - |
| Power | |||||
| Fast Charging | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | Yes | Yes | n/a | n/a | n/a |
| Calculator | Yes | Yes | n/a | n/a | n/a |
| Calendar | Yes | Yes | n/a | n/a | n/a |
| To-Do List | Yes | - | n/a | n/a | n/a |
| Voice Memo | Yes | Yes | n/a | n/a | n/a |
| Software | |||||
| Games | Yes | - | n/a | n/a | n/a |
| Java (J2ME) | Yes | - | n/a | n/a | n/a |
| Voice | |||||
| HD Voice | - | Yes | Yes | - | - |
| Headset Jack (2.5 mm) | Yes | - | n/a | n/a | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| Samsung SGH-X640 | Nuu F4L | HTC Desire 626s (CDMA) | ZTE Solar | CAT S61 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Nuu F4L | HTC Desire 626s (CDMA) | ZTE Solar | CAT S61 |
