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| Phone | Siemens CX75 | Nokia Lumia 521 / 520 | Nokia 6263 | Sonim XP5s |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Not yet released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
4" diag. 5 : 3 |
2.2" diag. 4 : 3 |
2.6" diag. 4 : 3 |
| Display Resolution & Type |
132 x 176 pixels LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
320 x 432 pixels (~204 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 750 mAh | 1,430 mAh | 1,020 mAh | 3,180 mAh |
| Processor | ? | 1 GHz Qualcomm Snapdragon S4 MSM8270 | ? | 1.4 GHz Qualcomm Snapdragon 427 (MSM8920) |
| RAM | ? | 512 MB | ? | 2 GB |
| Storage | ? raw hardware | 8 GB | ? raw hardware | 16 GB |
| Main Camera | 1 megapixel | 5 megapixel | 1 megapixel | 5 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | 720p HD | ? | 720p HD |
| Front Camera | - | - | - | - |
| Weight |
3.46 oz (98g) |
4.39 oz (124g) |
3.7 oz (105g) |
9.17 oz (260g) |
| Dimensions |
4.33" x 1.88" x 0.74" (110 x 48 x 18.8 mm) |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
3.72" x 1.88" x 0.85" (94 x 48 x 21.6 mm) |
5.55" x 2.52" x 0.91" (141 x 64 x 23 mm) |
| Form Factor | Slab | Slab | Clamshell | Slab |
| Platform / OS | (proprietary) | Windows | (proprietary) | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
WCDMA: 4 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 25, 26, 28, 30, 38, 41, 66 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
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| Data Technology | GPRS | HSPA+ 21 | WCDMA (UMTS) | LTE (Cat 4) |
| Features | ||||
| Barometer | - | - | - | Yes |
| Flashlight | - | - | - | Yes |
| GPS / Location | - | n/a | - | Yes |
| Ruggedized | - | - | - | Yes |
| Water-Resistant | - | - | - |
Yes IPX8 (SCUBA) |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | Yes | Yes |
| Hearing Aid Compatible | - |
Yes M3, T4 (very tele-coil compatible) |
- |
Yes M3, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | n/a | Yes | Yes |
| TTY/TDD (Digital) | - | Yes | - | Yes |
| Alerts | ||||
| Extra Display | - | - | Yes | - |
| Ringer Profiles | Yes | - | Yes | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Infrared (IR) | Yes | - | - | - |
| Mobile Hotspot | - | n/a | - | Yes |
| USB | Yes | Yes |
Yes Mini-USB |
Yes USB Type C |
| Wi-Fi | - | Yes | - |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | Yes |
| Ringer ID | Yes | n/a | Yes | Yes |
| Voice Dialing | - | n/a | Yes | - |
| Customization | ||||
| Custom Graphics | Yes | n/a | Yes | - |
| Custom Ringtones | Yes | n/a | Yes | Yes |
| Real-Music Ringers | - | n/a | Yes | - |
| Data & Network | ||||
| Data Tethering | Yes | n/a | - | - |
| Dual-SIM | - | - | - | Yes |
| WAP / Web Browser | Yes | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | Yes | n/a | Yes | - |
| EMS / Picture Messaging | Yes | n/a | - | - |
| Instant Messaging | - | n/a | - | - |
| MMS | Yes | n/a | Yes | Yes |
| Text Messaging Templates | - | n/a | Yes | Yes |
| Music | ||||
| FM Radio | - | - | Yes | Yes |
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | Yes | n/a | Yes | Yes |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | Yes | Yes |
| Calendar | Yes | n/a | Yes | Yes |
| To-Do List | Yes | n/a | Yes | - |
| Voice Memo | Yes | n/a | Yes | Yes |
| Software | ||||
| Games | Yes | n/a | Yes | - |
| Java (J2ME) | Yes | n/a | Yes | - |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Headset Jack (2.5 mm) | - | n/a | Yes | - |
| Push-To-Talk | Yes | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Siemens CX75 | Nokia Lumia 521 / 520 | Nokia 6263 | Sonim XP5s | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Siemens CX75 | Nokia Lumia 521 / 520 | Nokia 6263 | Sonim XP5s |
