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| Phone | Samsung Galaxy S21 | LG K4 / Optimus Zone 3 / Rebel | Motorola Droid Ultra |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
6.2" diag. 20 : 9 |
4.5" diag. 16 : 9 |
5" diag. 16 : 9 |
| Display Resolution & Type |
1080 x 2400 pixels (~424 ppi) AMOLED |
480 x 854 pixels (~218 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~294 ppi) AMOLED |
| Display Refresh | 120 Hz | 60 Hz | 60 Hz |
| Battery | 4,000 mAh | 1,940 mAh | 2,130 mAh |
| Processor | 2.8 GHz Qualcomm Snapdragon 888 | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | 1.7 GHz Qualcomm Snapdragon S4 Pro MSM8960T |
| RAM | 8 GB | 1.5 GB | 2 GB |
| Storage | 128 GB * | 16 GB * | 16 GB |
| Main Camera | 12 megapixel | 5 megapixel | 10 megapixel |
| Wide Camera | 12 megapixel | - | - |
| Tele Camera | 64 megapixel | - | - |
| Video Capture | 8K | 720p HD | 1080p HD |
| Front Camera | 10 megapixel | 2 megapixel | 2 megapixel |
| Weight |
6.03 oz (171g) |
3.99 oz (113g) |
4.83 oz (137g) |
| Dimensions |
5.97" x 2.8" x 0.31" (152 x 71 x 7.9 mm) |
5.19" x 2.62" x 0.35" (132 x 67 x 8.9 mm) |
5.41" x 2.8" x 0.28" (137 x 71 x 7.2 mm) |
| Platform / OS | Android | Android | Android |
| Network Bands |
5G: 2, 5, 12, 25, 30, 41, 66, 71, 77-C, 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 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
4G LTE: 4, 13 WCDMA: 1, 2, 5, 8 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
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| Data Technology | NR (5G) | LTE (Cat 3) | LTE (Cat 3) |
| Features | |||
| Barometer | Yes | - | - |
| Fingerprint Reader |
Yes in-display (ultrasonic) |
- | - |
| Flashlight | Yes | Yes | - |
| Water-Resistant |
Yes IPX8 (SCUBA) |
- | - |
| Accessibility | |||
| Hearing Aid Compatible | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Connectivity | |||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| NFC | Yes | - | Yes |
| USB |
Yes USB Type C |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi |
Yes 6 (802.11 a,ac,ax,b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 a,b,g,n) |
| Input | |||
| Side Keys | Yes | Yes | Yes |
| Touch Screen | Yes | Yes | Yes |
| Memory | |||
| Memory Card Slot | - | Yes | - |
| Music | |||
| Headphone Jack (3.5mm) | - | Yes | Yes |
| Stereo Speakers | Yes | - | - |
| Photo & Video | |||
| Miracast | - | Yes | Yes |
| TV Output | Yes | - | - |
| Power | |||
| Fast Charging | Yes | - | - |
| Wireless Charging | Yes | - | - |
| Voice | |||
| HD Voice | Yes | Yes * | - |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Samsung Galaxy S21 | LG K4 / Optimus Zone 3 / Rebel | Motorola Droid Ultra | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Galaxy S21 | LG K4 / Optimus Zone 3 / Rebel | Motorola Droid Ultra |
