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| Phone | Samsung SCH-A990 | Nokia N81 | Microsoft Surface Duo 2 | ZTE Blade Max 3 / Max Blue | Nokia N-Gage QD |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? |
2.4" diag. 4 : 3 |
8.3" diag. 4 : 3 |
6" diag. 16 : 9 |
? |
| Display Resolution & Type |
240 x 320 pixels LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
2688 x 1892 pixels (~396 ppi) AMOLED |
1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD) |
176 x 208 pixels LCD (Color) |
| Display Refresh | ? | ? | 90 Hz | 60 Hz | ? |
| Battery | 1,000 mAh | 1,050 mAh | 4,449 mAh | 4,000 mAh | 1,070 mAh |
| Processor | ? | 369 MHz ARM 11 | Qualcomm Snapdragon 888 | 2 GHz Qualcomm Snapdragon 625 (MSM8953) | ? |
| RAM | ? | ? | 8 GB | 2 GB | ? |
| Storage | ? raw hardware | 8 GB * | 128 GB * | 16 GB | ? raw hardware |
| Main Camera | 3 megapixel | 2 megapixel | 12 megapixel | 13 megapixel | - |
| Wide Camera | - | - | 16 megapixel | - | - |
| Tele Camera | - | - | 12 megapixel | - | - |
| Video Capture | ? | VGA (640 x 480) | 4K UHD | 4K UHD | - |
| Front Camera | - | - | 12 megapixel | 5 megapixel | - |
| Weight |
4.4 oz (125g) |
4.94 oz (140g) |
10.02 oz (284g) |
6.34 oz (180g) |
5.04 oz (143g) |
| Dimensions |
3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm) |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
5.72" x 3.63" x 0.43" (145 x 92 x 11 mm) |
6.49" x 3.3" x 0.35" (165 x 84 x 8.9 mm) |
4.65" x 2.68" x 0.87" (118 x 68 x 22.1 mm) |
| Form Factor | Clamshell | Slide | Unique | Slab | Slab |
| Platform / OS | (proprietary) | S60 (Symbian) | Android | Android | S60 (Symbian) |
| Network Bands |
CDMA: 850, 1900 |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
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 |
4G LTE: 2, 4, 5, 12, 13, 25 WCDMA: 2, 4, 5 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
GSM: 850, 1900 |
| Data Technology | EVDO r0 | EDGE | NR (5G) | LTE (Cat 4) | GPRS |
| Features | |||||
| Fingerprint Reader | - | - |
Yes stand-alone |
Yes stand-alone |
- |
| Flashlight | Yes | - | Yes | Yes | - |
| GPS / Location | Yes | n/a | n/a | n/a | n/a |
| Accessibility | |||||
| Hearing Aid Compatible |
Yes M3 (mostly compatible) |
- |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
- |
| Multiple Languages | Yes | n/a | n/a | n/a | n/a |
| TTY/TDD (Digital) | Yes | - | - | Yes | - |
| Alerts | |||||
| Extra Display | Yes | - | - | - | - |
| Ringer Profiles | - | Yes | - | - | Yes |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | Yes |
| NFC | - | - | Yes | - | - |
| USB | Yes |
Yes Micro-USB |
Yes USB Type C |
Yes USB Type C |
- |
| Wi-Fi | - |
Yes 802.11 b,g |
Yes 6 (802.11 a,ac,ax,b,g,n) |
Yes 5 (802.11 ac,b,g,n) |
- |
| Contacts | |||||
| Picture ID | Yes | n/a | n/a | n/a | n/a |
| Ringer ID | Yes | n/a | n/a | n/a | n/a |
| Voice Dialing | Yes | n/a | n/a | n/a | n/a |
| Customization | |||||
| Custom Graphics | Yes | n/a | n/a | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a | n/a | n/a |
| Real-Music Ringers | Yes | n/a | n/a | n/a | n/a |
| Data & Network | |||||
| Data Tethering | Yes | n/a | n/a | n/a | n/a |
| Dual-SIM | - | - | Yes | - | - |
| WAP / Web Browser | Yes | n/a | n/a | n/a | n/a |
| Input | |||||
| Predictive Text Entry | Yes | n/a | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes | - |
| Touch Screen | - | - |
Yes Capacitive |
Yes Capacitive |
- |
| Memory | |||||
| Memory Card Slot | Yes | Yes * | - | Yes | Yes |
| Messaging | |||||
| Email Client | - | n/a | n/a | n/a | n/a |
| EMS / Picture Messaging | Yes | n/a | n/a | n/a | n/a |
| Instant Messaging | - | n/a | n/a | n/a | n/a |
| MMS | Yes | n/a | n/a | n/a | n/a |
| Text Messaging Templates | Yes | n/a | n/a | n/a | n/a |
| Music | |||||
| FM Radio | - | Yes | - | - | - |
| Headphone Jack (3.5mm) | - | Yes | - | Yes | - |
| Music Player | Yes | n/a | n/a | n/a | n/a |
| Stereo Speakers | Yes | Yes | Yes | - | - |
| Photo & Video | |||||
| Miracast | - | - | Yes | - | - |
| TV Output | Yes | - | Yes | - | - |
| Video Calling | - | n/a | n/a | n/a | n/a |
| Power | |||||
| Fast Charging | - | - | Yes | Yes | - |
| Productivity | |||||
| Alarm | Yes | n/a | n/a | n/a | n/a |
| Calculator | Yes | n/a | n/a | n/a | n/a |
| Calendar | Yes | n/a | n/a | n/a | n/a |
| To-Do List | - | n/a | n/a | n/a | n/a |
| Voice Memo | Yes | n/a | n/a | n/a | n/a |
| Software | |||||
| BREW | Yes | n/a | n/a | n/a | n/a |
| Games | Yes | n/a | n/a | n/a | n/a |
| Java (J2ME) | - | n/a | n/a | n/a | n/a |
| Voice | |||||
| HD Voice | - | - | Yes | - | - |
| Headset Jack (2.5 mm) | - | n/a | n/a | n/a | n/a |
| Push-To-Talk | - | Yes * | - | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| Samsung SCH-A990 | Nokia N81 | Microsoft Surface Duo 2 | ZTE Blade Max 3 / Max Blue | Nokia N-Gage QD | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SCH-A990 | Nokia N81 | Microsoft Surface Duo 2 | ZTE Blade Max 3 / Max Blue | Nokia N-Gage QD |
