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| Phone | Microsoft Lumia 550 | Samsung SGH-T629 | Motorola Charm |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
4.7" diag. 16 : 9 |
? |
2.8" diag. 4 : 3 |
| Display Resolution & Type |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
320 x 240 pixels (~143 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz |
| Battery | 2,100 mAh | 880 mAh | 1,170 mAh |
| Processor | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | ? | 720 MHz TI OMAP3410 |
| RAM | 1 GB | ? | ? |
| Storage | 8 GB | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | 1 megapixel | 3 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | 720p HD | QCIF (176 x 144) | ? |
| Front Camera | 2 megapixel | - | - |
| Weight |
5.01 oz (142g) |
3.2 oz (91g) |
3.88 oz (110g) |
| Dimensions |
5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm) |
3.9" x 2.01" x 0.55" (99 x 51 x 14 mm) |
3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm) |
| Form Factor | Slab | Slide | Slab |
| Platform / OS | Windows | (proprietary) | Android |
| Network Bands |
4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
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| Data Technology | LTE (Cat 4) | EDGE | HSDPA 3.6 |
| Features | |||
| Flashlight | Yes | - | - |
| GPS / Location | n/a | - | n/a |
| Accessibility | |||
| Adjustable Text Size | n/a | - | n/a |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
- | - |
| Multiple Languages | n/a | Yes | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | Yes |
| Mobile Hotspot | n/a | - | n/a |
| USB |
Yes Micro-USB |
Yes |
Yes Micro-USB |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- |
Yes 4 (802.11 b,g,n) |
| Contacts | |||
| Picture ID | n/a | Yes | n/a |
| Ringer ID | n/a | Yes | n/a |
| Voice Dialing | n/a | Yes | n/a |
| Customization | |||
| Custom Graphics | n/a | Yes | n/a |
| Custom Ringtones | n/a | Yes | n/a |
| Real-Music Ringers | n/a | Yes | n/a |
| Data & Network | |||
| Data Tethering | n/a | Yes | n/a |
| WAP / Web Browser | n/a | Yes | n/a |
| Input | |||
| Predictive Text Entry | n/a | Yes | n/a |
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | Yes |
| Touch Screen |
Yes Capacitive |
- |
Yes Capacitive |
| Memory | |||
| Memory Card Slot | Yes | Yes | Yes |
| Messaging | |||
| Email Client | n/a | - | n/a |
| EMS / Picture Messaging | n/a | Yes | n/a |
| Instant Messaging | n/a | Yes | n/a |
| MMS | n/a | Yes | n/a |
| Text Messaging Templates | n/a | Yes | n/a |
| Music | |||
| FM Radio | Yes | - | - |
| Headphone Jack (3.5mm) | Yes | - | Yes |
| Music Player | n/a | Yes | n/a |
| Productivity | |||
| Alarm | n/a | Yes | n/a |
| Calculator | n/a | Yes | n/a |
| Calendar | n/a | Yes | n/a |
| To-Do List | n/a | Yes | n/a |
| Voice Memo | n/a | Yes | n/a |
| Software | |||
| Games | n/a | Yes | n/a |
| Java (J2ME) | n/a | Yes | n/a |
| Voice | |||
| HD Voice | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes |
| Microsoft Lumia 550 | Samsung SGH-T629 | Motorola Charm | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Microsoft Lumia 550 | Samsung SGH-T629 | Motorola Charm |
