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| Phone | Nokia N81 | Samsung Galaxy Z Fold4 | Samsung Jack i637 | OnePlus 7 Pro (5G) |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
7.6" diag. 4 : 3 |
2.4" diag. 4 : 3 |
6.7" diag. 19.5 : 9 |
| Display Resolution & Type |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
1812 x 2176 pixels (~373 ppi) AMOLED |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
1440 x 3120 pixels (~515 ppi) AMOLED |
| Display Refresh | ? | 120 Hz | ? | 90 Hz |
| Battery | 1,050 mAh | 4,400 mAh | 1,480 mAh | 4,000 mAh |
| Processor | 369 MHz ARM 11 | 3.2 GHz Snapdragon 8+ Gen 1 | ? | 2.8 GHz Qualcomm Snapdragon 855 |
| RAM | ? | 12 GB | ? | 6 GB * |
| Storage | 8 GB * | 256 GB * | ? raw hardware | 128 GB * |
| Main Camera | 2 megapixel | 50 megapixel | 3 megapixel | 48 megapixel |
| Wide Camera | - | 12 megapixel | - | 16 megapixel |
| Tele Camera | - | 10 megapixel | - | 8 megapixel |
| Video Capture | VGA (640 x 480) | 4K UHD | ? | 4K UHD |
| Front Camera | - | 10 megapixel | - | 16 megapixel |
| Weight |
4.94 oz (140g) |
9.28 oz (263g) |
3.6 oz (102g) |
7.27 oz (206g) |
| Dimensions |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
6.11" x 2.64" x 0.62" (155 x 67 x 15.8 mm) |
4.4" x 2.4" x 0.5" (112 x 61 x 12.7 mm) |
6.4" x 2.99" x 0.35" (163 x 76 x 8.8 mm) |
| Platform / OS | S60 (Symbian) | Android | Windows Mobile Standard | Android |
| Network Bands |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
5G: 2, 5, 7, 12, 25, 30, 38, 41, 48, 66, 71, 77-A, 77-C, 78, 258, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
5G: 41 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 34, 38, 39, 41, 46, 48, 66, 71 WCDMA: 1, 2, 4, 5, 8, 19 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | EDGE | NR (5G) | HSDPA 3.6 | LTE (Cat 18) |
| Features | ||||
| Barometer | - | Yes | - | - |
| Fingerprint Reader | - |
Yes stand-alone |
- |
Yes in-display (optical) |
| Flashlight | - | Yes | - | Yes |
| Water-Resistant | - |
Yes IPX8 (SCUBA) |
- | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | - | Yes | Yes | Yes |
| TTY/TDD (Digital) | - | Yes | - | Yes |
| Alerts | ||||
| Extra Display | - | Yes | - | - |
| Ringer Profiles | Yes | - | Yes | - |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| NFC | - | Yes | - | Yes |
| USB |
Yes Micro-USB |
Yes USB Type C |
Yes |
Yes USB Type C |
| UWB | - | Yes | - | - |
| Wi-Fi |
Yes 802.11 b,g |
Yes 6E (802.11 a,ac,ax,b,g,n) |
Yes 802.11 b,g |
Yes 5 (802.11 a,ac,b,g,n) |
| Data & Network | ||||
| Dual-SIM | - | Yes | - | - |
| Input | ||||
| Side Keys | Yes | Yes | Yes | Yes |
| Stylus | - | Yes | - | - |
| Text Keyboard, Hardware | - | - | Yes | - |
| Touch Screen | - | Yes | - | Yes |
| Memory | ||||
| Memory Card Slot | Yes * | - | Yes | - |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | - | - | - |
| Stereo Speakers | Yes | - | - | Yes |
| Photo & Video | ||||
| TV Output | - | Yes | - | - |
| Power | ||||
| Fast Charging | - | Yes | - | Yes |
| Wireless Charging | - | Yes | - | - |
| Voice | ||||
| HD Voice | - | Yes | - | Yes |
| Push-To-Talk | Yes * | - | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| Nokia N81 | Samsung Galaxy Z Fold4 | Samsung Jack i637 | OnePlus 7 Pro (5G) | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia N81 | Samsung Galaxy Z Fold4 | Samsung Jack i637 | OnePlus 7 Pro (5G) |
