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| Phone | Nokia N81 | Samsung Behold T919 | Samsung SGH-A727 | Microsoft Lumia 550 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
3.1" diag. 5 : 3 |
? |
4.7" diag. 16 : 9 |
| Display Resolution & Type |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
240 x 400 pixels (~151 ppi) LCD (TFT/TFD) |
220 x 176 pixels LCD (TFT/TFD) |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | ? |
| Battery | 1,050 mAh | 1,000 mAh | ? | 2,100 mAh |
| Processor | 369 MHz ARM 11 | ? | ? | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) |
| RAM | ? | ? | ? | 1 GB |
| Storage | 8 GB * | ? raw hardware | ? raw hardware | 8 GB |
| Main Camera | 2 megapixel | 5 megapixel | 1 megapixel | 5 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | VGA (640 x 480) | QVGA (320 x 240) | QCIF (176 x 144) | 720p HD |
| Front Camera | - | - | - | 2 megapixel |
| Weight |
4.94 oz (140g) |
4 oz (113g) |
2.82 oz (80g) |
5.01 oz (142g) |
| Dimensions |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
4.12" x 2.1" x 0.5" (105 x 53 x 12.7 mm) |
4.51" x 2.01" x 0.35" (115 x 51 x 8.9 mm) |
5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm) |
| Form Factor | Slide | Slab | Slab | Slab |
| Platform / OS | S60 (Symbian) | (proprietary) | (proprietary) | Windows |
| Network Bands |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
WCDMA: 4 GSM: 850, 900, 1800, 1900 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | EDGE | WCDMA (UMTS) | HSDPA 1.8 | LTE (Cat 4) |
| Features | ||||
| Flashlight | - | - | - | Yes |
| GPS / Location | n/a | Yes | - | n/a |
| Accessibility | ||||
| Adjustable Text Size | n/a | - | - | n/a |
| Hearing Aid Compatible | - |
Yes M3 (mostly compatible) |
- |
Yes M3, T4 (very tele-coil compatible) |
| Multiple Languages | n/a | Yes | Yes | n/a |
| TTY/TDD (Digital) | - | - | Yes | Yes |
| Alerts | ||||
| Ringer Profiles | Yes | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Mobile Hotspot | n/a | - | - | n/a |
| USB |
Yes Micro-USB |
Yes | Yes |
Yes Micro-USB |
| Wi-Fi |
Yes 802.11 b,g |
- | - |
Yes 4 (802.11 b,g,n) |
| Contacts | ||||
| Picture ID | n/a | Yes | Yes | n/a |
| Ringer ID | n/a | Yes | Yes | n/a |
| Voice Dialing | n/a | Yes | - | n/a |
| Customization | ||||
| Custom Graphics | n/a | Yes | Yes | n/a |
| Custom Ringtones | n/a | Yes | Yes | n/a |
| Real-Music Ringers | n/a | Yes | Yes | n/a |
| Data & Network | ||||
| Data Tethering | n/a | - | Yes | n/a |
| WAP / Web Browser | n/a | Yes | Yes | n/a |
| Input | ||||
| Predictive Text Entry | n/a | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | Yes | - |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | Yes * | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | n/a | Yes | Yes | n/a |
| Instant Messaging | n/a | Yes | Yes | n/a |
| MMS | n/a | Yes | Yes | n/a |
| Text Messaging Templates | n/a | Yes | Yes | n/a |
| Music | ||||
| FM Radio | Yes | - | - | Yes |
| Headphone Jack (3.5mm) | Yes | - | - | Yes |
| Music Player | n/a | Yes | Yes | n/a |
| Stereo Speakers | Yes | - | - | - |
| Photo & Video | ||||
| Video Calling | n/a | - | - | n/a |
| Productivity | ||||
| Alarm | n/a | Yes | Yes | n/a |
| Calculator | n/a | Yes | Yes | n/a |
| Calendar | n/a | Yes | Yes | n/a |
| To-Do List | n/a | Yes | Yes | n/a |
| Voice Memo | n/a | Yes | Yes | n/a |
| Software | ||||
| Games | n/a | Yes | Yes | n/a |
| Java (J2ME) | n/a | Yes | Yes | n/a |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Push-To-Talk | Yes * | - | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Nokia N81 | Samsung Behold T919 | Samsung SGH-A727 | Microsoft Lumia 550 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia N81 | Samsung Behold T919 | Samsung SGH-A727 | Microsoft Lumia 550 |
