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| Phone | Microsoft Surface Duo 2 | Nokia N-Gage QD | Nokia N81 | Samsung SCH-A990 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
8.3" diag. 4 : 3 |
? |
2.4" diag. 4 : 3 |
? |
| Display Resolution & Type |
2688 x 1892 pixels (~396 ppi) AMOLED |
176 x 208 pixels LCD (Color) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
240 x 320 pixels LCD (TFT/TFD) |
| Display Refresh | 90 Hz | ? | ? | ? |
| Battery | 4,449 mAh | 1,070 mAh | 1,050 mAh | 1,000 mAh |
| Processor | Qualcomm Snapdragon 888 | ? | 369 MHz ARM 11 | ? |
| RAM | 8 GB | ? | ? | ? |
| Storage | 128 GB * | ? raw hardware | 8 GB * | ? raw hardware |
| Main Camera | 12 megapixel | - | 2 megapixel | 3 megapixel |
| Wide Camera | 16 megapixel | - | - | - |
| Tele Camera | 12 megapixel | - | - | - |
| Video Capture | 4K UHD | - | VGA (640 x 480) | ? |
| Front Camera | 12 megapixel | - | - | - |
| Weight |
10.02 oz (284g) |
5.04 oz (143g) |
4.94 oz (140g) |
4.4 oz (125g) |
| Dimensions |
5.72" x 3.63" x 0.43" (145 x 92 x 11 mm) |
4.65" x 2.68" x 0.87" (118 x 68 x 22.1 mm) |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm) |
| Form Factor | Unique | Slab | Slide | Clamshell |
| Platform / OS | Android | S60 (Symbian) | S60 (Symbian) | (proprietary) |
| Network Bands |
5G: 1, 2, 3, 5, 7, 20, 25, 28, 38, 41, 66, 71, 77-C, 78, 257, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71 WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 |
GSM: 850, 1900 |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
| Data Technology | NR (5G) | GPRS | EDGE | EVDO r0 |
| Features | ||||
| Fingerprint Reader |
Yes stand-alone |
- | - | - |
| Flashlight | Yes | - | - | Yes |
| GPS / Location | n/a | n/a | n/a | Yes |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
- | - |
Yes M3 (mostly compatible) |
| Multiple Languages | n/a | n/a | n/a | Yes |
| TTY/TDD (Digital) | - | - | - | Yes |
| Alerts | ||||
| Extra Display | - | - | - | Yes |
| Ringer Profiles | - | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| NFC | Yes | - | - | - |
| USB |
Yes USB Type C |
- |
Yes Micro-USB |
Yes |
| Wi-Fi |
Yes 6 (802.11 a,ac,ax,b,g,n) |
- |
Yes 802.11 b,g |
- |
| Contacts | ||||
| Picture ID | n/a | n/a | n/a | Yes |
| Ringer ID | n/a | n/a | n/a | Yes |
| Voice Dialing | n/a | n/a | n/a | Yes |
| Customization | ||||
| Custom Graphics | n/a | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | n/a | Yes |
| Real-Music Ringers | n/a | n/a | n/a | Yes |
| Data & Network | ||||
| Data Tethering | n/a | n/a | n/a | Yes |
| Dual-SIM | Yes | - | - | - |
| WAP / Web Browser | n/a | n/a | n/a | Yes |
| Input | ||||
| Predictive Text Entry | n/a | n/a | n/a | Yes |
| Side Keys | Yes | - | Yes | Yes |
| Touch Screen |
Yes Capacitive |
- | - | - |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes * | Yes |
| Messaging | ||||
| Email Client | n/a | n/a | n/a | - |
| EMS / Picture Messaging | n/a | n/a | n/a | Yes |
| Instant Messaging | n/a | n/a | n/a | - |
| MMS | n/a | n/a | n/a | Yes |
| Text Messaging Templates | n/a | n/a | n/a | Yes |
| Music | ||||
| FM Radio | - | - | Yes | - |
| Headphone Jack (3.5mm) | - | - | Yes | - |
| Music Player | n/a | n/a | n/a | Yes |
| Stereo Speakers | Yes | - | Yes | Yes |
| Photo & Video | ||||
| Miracast | Yes | - | - | - |
| TV Output | Yes | - | - | Yes |
| Video Calling | n/a | n/a | n/a | - |
| Power | ||||
| Fast Charging | Yes | - | - | - |
| Productivity | ||||
| Alarm | n/a | n/a | n/a | Yes |
| Calculator | n/a | n/a | n/a | Yes |
| Calendar | n/a | n/a | n/a | Yes |
| To-Do List | n/a | n/a | n/a | - |
| Voice Memo | n/a | n/a | n/a | Yes |
| Software | ||||
| BREW | n/a | n/a | n/a | Yes |
| Games | n/a | n/a | n/a | Yes |
| Java (J2ME) | n/a | n/a | n/a | - |
| Voice | ||||
| HD Voice | Yes | - | - | - |
| Headset Jack (2.5 mm) | n/a | n/a | n/a | - |
| Push-To-Talk | - | - | Yes * | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Microsoft Surface Duo 2 | Nokia N-Gage QD | Nokia N81 | Samsung SCH-A990 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Microsoft Surface Duo 2 | Nokia N-Gage QD | Nokia N81 | Samsung SCH-A990 |
