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| Phone | LG K40 / Harmony 3 | Motorola Moto Z2 Force | Samsung Galaxy Ring / Prevail 2 | Coolpad Quattro 4G |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
5.7" diag. 18 : 9 |
5.5" diag. 16 : 9 |
4" diag. 5 : 3 |
4" diag. 5 : 3 |
| Display Resolution & Type |
720 x 1440 pixels (~282 ppi) LCD (TFT/TFD) |
1440 x 2560 pixels (~534 ppi) AMOLED |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | 60 Hz | 60 Hz | 60 Hz |
| Battery | 3,000 mAh | 2,730 mAh | 1,750 mAh | 1,600 mAh |
| Processor | 1.8 GHz Qualcomm Snapdragon 450 | 2.4 GHz Qualcomm Snapdragon 835 (MSM8998) | 1.4 GHz Qualcomm Snapdragon S2 MSM8655 | ? |
| RAM | 2 GB | 4 GB | 1 GB | ? |
| Storage | 32 GB | 64 GB | 4 GB | 512 MB |
| Main Camera | 13 megapixel | 12 megapixel | 5 megapixel | 3 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | 4K UHD | 720p HD | VGA (640 x 480) |
| Front Camera | 5 megapixel | 5 megapixel | 1 megapixel | Yes |
| Weight |
5.11 oz (145g) |
5.04 oz (143g) |
3.4 oz (96g) |
3.31 oz (94g) |
| Dimensions |
6.02" x 2.83" x 0.32" (153 x 72 x 8.1 mm) |
6.13" x 2.99" x 0.24" (156 x 76 x 6.1 mm) |
4.83" x 2.48" x 0.47" (123 x 63 x 11.9 mm) |
4.96" x 2.6" x 0.51" (126 x 66 x 13 mm) |
| Platform / OS | Android | Android | Android | Android |
| Network Bands |
4G LTE: 2, 4, 5, 12, 13, 14, 25, 26, 29, 30, 41, 66, 71 WCDMA: 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 41, 66 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
CDMA: 800, 850, 1900 |
4G LTE: 2, 4 CDMA: 850, 1700, 1900 |
| Data Technology | LTE (Cat 6) | LTE (Cat 16) | EVDO rA | LTE (Cat 3) |
| Features | ||||
| Barometer | - | Yes | - | - |
| Fingerprint Reader |
Yes stand-alone |
Yes stand-alone |
- | - |
| Flashlight | Yes | Yes | - | - |
| VR-ready | - | Yes | - | - |
| Water-Resistant | - | Yes | - | - |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3, T4 (very tele-coil compatible) |
Yes M4 (very compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| NFC | Yes * | Yes | - | - |
| USB |
Yes Micro-USB |
Yes USB Type C |
Yes | Yes |
| Wi-Fi |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 a,b,g,n) |
Yes |
| Data & Network | ||||
| Dual-SIM | - | Yes * | - | - |
| Input | ||||
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | Yes | - | Yes | Yes |
| Photo & Video | ||||
| DLNA | Yes | - | Yes | - |
| Power | ||||
| Fast Charging | - | Yes | - | - |
| Voice | ||||
| HD Voice | Yes | Yes | - | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| LG K40 / Harmony 3 | Motorola Moto Z2 Force | Samsung Galaxy Ring / Prevail 2 | Coolpad Quattro 4G | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | LG K40 / Harmony 3 | Motorola Moto Z2 Force | Samsung Galaxy Ring / Prevail 2 | Coolpad Quattro 4G |
