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| Phone | Microsoft Lumia 550 | Samsung SGH-E400 | Cal-Comp EZ | Samsung Convoy 4 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4.7" diag. 16 : 9 |
? | ? |
2.4" diag. 4 : 3 |
| Display Resolution & Type |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
128 x 144 pixels LCD (TFT/TFD) |
128 x 128 pixels LCD (STN) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 2,100 mAh | 700 mAh | 800 mAh | 1,300 mAh |
| Processor | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | ? | ? | 480 MHz Qualcomm QSC6185 |
| RAM | 1 GB | ? | ? | 256 MB |
| Storage | 8 GB | ? raw hardware | ? raw hardware | 512 MB |
| Main Camera | 5 megapixel | - | - | 5 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 720p HD | - | - | QVGA (320 x 240) |
| Front Camera | 2 megapixel | - | - | - |
| Weight |
5.01 oz (142g) |
3.1 oz (88g) |
2.47 oz (70g) |
5.82 oz (165g) |
| Dimensions |
5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm) |
3.46" x 1.65" x 0.89" (88 x 42 x 22.6 mm) |
4.04" x 1.71" x 0.63" (103 x 43 x 16 mm) |
4.26" x 2.18" x 0.93" (108 x 55 x 23.6 mm) |
| Form Factor | Slab | Clamshell | Slab | Clamshell |
| Platform / OS | Windows | (proprietary) | (proprietary) | (proprietary) |
| Network Bands |
4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
CDMA: 850, 1900 |
CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | LTE (Cat 4) | GPRS | 1xRTT | EVDO rA |
| Features | ||||
| Flashlight | Yes | - | - | Yes |
| GPS / Location | n/a | - | Yes | Yes |
| Ruggedized | - | - | - | Yes |
| Water-Resistant | - | - | - |
Yes IPX7 (snorkeling) |
| Accessibility | ||||
| Adjustable Text Size | n/a | - | - | Yes |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
- | - |
Yes M3, T4 (very tele-coil compatible) |
| Multiple Languages | n/a | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | - | Yes |
| Alerts | ||||
| Extra Display | - | Yes | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | - | - | Yes |
| Infrared (IR) | - | Yes | - | - |
| Mobile Hotspot | n/a | - | - | - |
| USB |
Yes Micro-USB |
- |
Yes Mini-USB |
Yes Micro-USB |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- | - | - |
| Contacts | ||||
| Picture ID | n/a | - | - | Yes |
| Ringer ID | n/a | - | - | Yes |
| Voice Dialing | n/a | - | - | Yes |
| Customization | ||||
| Custom Graphics | n/a | Yes | - | Yes |
| Custom Ringtones | n/a | Yes | - | Yes |
| Real-Music Ringers | n/a | - | - | Yes |
| Data & Network | ||||
| Data Tethering | n/a | Yes | - | - |
| WAP / Web Browser | n/a | Yes | - | Yes |
| Input | ||||
| Predictive Text Entry | n/a | Yes | - | Yes |
| Side Keys | Yes | Yes | - | Yes |
| Touch Screen |
Yes Capacitive |
- | - | - |
| Memory | ||||
| Memory Card Slot | Yes | - | - | Yes |
| Messaging | ||||
| Email Client | n/a | - | - | - |
| EMS / Picture Messaging | n/a | Yes | - | - |
| MMS | n/a | - | - | Yes |
| Text Messaging Templates | n/a | Yes | Yes | - |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | - | - | Yes |
| Music Player | n/a | - | - | Yes |
| Productivity | ||||
| Alarm | n/a | Yes | Yes | Yes |
| Calculator | n/a | Yes | Yes | Yes |
| Calendar | n/a | Yes | Yes | Yes |
| To-Do List | n/a | Yes | Yes | - |
| Voice Memo | n/a | - | Yes * | Yes |
| Software | ||||
| BREW | n/a | - | - | Yes |
| Games | n/a | Yes | - | Yes |
| Java (J2ME) | n/a | Yes | - | - |
| Voice | ||||
| HD Voice | Yes | - | - | - |
| Headset Jack (2.5 mm) | n/a | Yes | Yes | - |
| Push-To-Talk | - | - | - | Yes |
| Speaker Phone | Yes | - | - | Yes |
| * Some versions only | ||||
| Microsoft Lumia 550 | Samsung SGH-E400 | Cal-Comp EZ | Samsung Convoy 4 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Microsoft Lumia 550 | Samsung SGH-E400 | Cal-Comp EZ | Samsung Convoy 4 |
