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| Phone | Motorola Backflip | Nokia N81 | Sonim XP10 | Samsung Nexus S 4G | LG K20 / Harmony / Grace |
| Current U.S. Carriers | (none) | (none) |
AT&T T-Mobile Verizon |
(none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
3.1" diag. 5 : 3 |
2.4" diag. 4 : 3 |
5.5" diag. 18 : 9 |
4" diag. 5 : 3 |
5.3" diag. 16 : 9 |
| Display Resolution & Type |
320 x 480 pixels (~186 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
1080 x 2160 pixels (~439 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) AMOLED |
720 x 1280 pixels (~277 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | 60 Hz | 60 Hz | 60 Hz |
| Battery | 1,400 mAh | 1,050 mAh | 5,000 mAh | 1,500 mAh | 2,800 mAh |
| Processor | 528 MHz Qualcomm MSM7201a | 369 MHz ARM 11 | 2.2 GHz Qualcomm Snapdragon 480 | 1 GHz Samsung Hummingbird Cortex A8 | 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) |
| RAM | ? | ? | 6 GB | ? | 1.5 GB |
| Storage | ? raw hardware | 8 GB * | 128 GB | 16 GB | 16 GB |
| Main Camera | 5 megapixel | 2 megapixel | 50 megapixel | 5 megapixel | 8 megapixel |
| Wide Camera | - | - | 8 megapixel | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | CIF (352 x 288) | VGA (640 x 480) | 1080p HD | WVGA / 480p | 1080p HD |
| Front Camera | - | - | 8 megapixel | Yes | 5 megapixel |
| Weight |
4.7 oz (133g) |
4.94 oz (140g) |
11.3 oz (320g) |
4.62 oz (131g) |
5 oz (142g) |
| Dimensions |
4.25" x 2.09" x 0.6" (108 x 53 x 15.3 mm) |
4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm) |
6.34" x 3.05" x 0.65" (161 x 77 x 16.5 mm) |
4.88" x 2.48" x 0.44" (124 x 63 x 11.2 mm) |
5.9" x 3" x 0.3" (150 x 76 x 7.6 mm) |
| Platform / OS | Android | S60 (Symbian) | Android | Android | Android |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
WCDMA: 1 GSM: 850, 900, 1800, 1900 |
5G: 2, 5, 14, 25, 30, 41, 48, 66, 71, 77-A, 77-C, 78 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 29, 30, 38, 39, 40, 41, 42, 46, 48, 66, 71 WCDMA: 1, 2, 4, 5, 8 |
4G WiMAX: 41 CDMA: 850, 1900 |
4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | HSPA 7.2 | EDGE | NR (5G) | WiMAX | LTE (Cat 4) |
| Features | |||||
| Barometer | - | - | Yes | - | - |
| Fingerprint Reader | - | - |
Yes stand-alone |
- | - |
| Flashlight | - | - | Yes | - | Yes |
| Ruggedized | - | - | Yes | - | - |
| Water-Resistant | - | - |
Yes IPX9 (dishwasher) |
- | - |
| Accessibility | |||||
| Hearing Aid Compatible |
Yes M3 (mostly compatible) |
- |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4 (very compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| TTY/TDD (Digital) | - | - | Yes | - | Yes |
| Alerts | |||||
| Ringer Profiles | - | Yes | - | - | - |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | Yes |
| NFC | - | - | Yes | Yes | Yes * |
| USB |
Yes Micro-USB |
Yes Micro-USB |
Yes USB Type C |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi |
Yes 802.11 b,g |
Yes 802.11 b,g |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
| Data & Network | |||||
| Dual-SIM | - | - | Yes | - | - |
| Input | |||||
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - | - | - |
| Touch Screen |
Yes Capacitive |
- |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
| Memory | |||||
| Memory Card Slot | Yes | Yes * | Yes | - | Yes |
| Music | |||||
| FM Radio | - | Yes | - | - | Yes |
| Headphone Jack (3.5mm) | Yes | Yes | - | Yes | Yes |
| Stereo Speakers | - | Yes | - | - | - |
| Power | |||||
| Fast Charging | - | - | Yes | - | - |
| Wireless Charging | - | - | Yes | - | - |
| Voice | |||||
| HD Voice | - | - | Yes | - | Yes |
| Push-To-Talk | - | Yes * | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| Motorola Backflip | Nokia N81 | Sonim XP10 | Samsung Nexus S 4G | LG K20 / Harmony / Grace | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Motorola Backflip | Nokia N81 | Sonim XP10 | Samsung Nexus S 4G | LG K20 / Harmony / Grace |
