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| Phone | Pantech Matrix Pro C820 | Samsung Sidekick 4G | ZTE Citrine | Samsung Galaxy S21 |
| Current U.S. Carriers | (none) | (none) | (none) | Verizon |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2.4" diag. 4 : 3 |
3.5" diag. 5 : 3 |
4" diag. 5 : 3 |
6.2" diag. 20 : 9 |
| Display Resolution & Type |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~267 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
1080 x 2400 pixels (~424 ppi) AMOLED |
| Display Refresh | ? | 60 Hz | 60 Hz | 120 Hz |
| Battery | 1,320 mAh | ? | 1,650 mAh | 4,000 mAh |
| Processor | 528 MHz ARM 11 | 1 GHz Samsung Hummingbird Cortex A8 | ? | 2.8 GHz Qualcomm Snapdragon 888 |
| RAM | ? | ? | 1 GB | 8 GB |
| Storage | ? raw hardware | ? raw hardware | 8 GB | 128 GB * |
| Main Camera | 2 megapixel | 3 megapixel | 5 megapixel | 12 megapixel |
| Wide Camera | - | - | - | 12 megapixel |
| Tele Camera | - | - | - | 64 megapixel |
| Video Capture | QCIF (176 x 144) | WVGA / 480p | ? | 8K |
| Front Camera | - | Yes | Yes | 10 megapixel |
| Weight |
5.34 oz (151g) |
5.7 oz (162g) |
4.82 oz (137g) |
6.03 oz (171g) |
| Dimensions |
4.2" x 2" x 0.9" (107 x 51 x 22.9 mm) |
5" x 2.42" x 0.6" (127 x 61 x 15.2 mm) |
4.92" x 2.56" x 0.41" (125 x 65 x 10.4 mm) |
5.97" x 2.8" x 0.31" (152 x 71 x 7.9 mm) |
| Platform / OS | Windows Mobile Standard | Android | Android | Android |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 |
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 |
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| Data Technology | HSDPA 3.6 | HSPA+ 21 | LTE (Cat 3) | NR (5G) |
| Features | ||||
| Barometer | - | - | - | Yes |
| Fingerprint Reader | - | - | - |
Yes in-display (ultrasonic) |
| Flashlight | - | - | Yes | Yes |
| Water-Resistant | - | - | - |
Yes IPX8 (SCUBA) |
| Accessibility | ||||
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Ringer Profiles | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| NFC | - | - | - | Yes |
| USB | Yes |
Yes Micro-USB |
Yes Micro-USB |
Yes USB Type C |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes 6 (802.11 a,ac,ax,b,g,n) |
| Input | ||||
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | Yes | - | - |
| Touch Screen | - | Yes | Yes |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | - |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | Yes | - |
| Stereo Speakers | - | - | - | Yes |
| Photo & Video | ||||
| DLNA | - | Yes | - | - |
| TV Output | - | - | - | Yes |
| Power | ||||
| Fast Charging | - | - | - | Yes |
| Wireless Charging | - | - | - | Yes |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Pantech Matrix Pro C820 | Samsung Sidekick 4G | ZTE Citrine | Samsung Galaxy S21 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Pantech Matrix Pro C820 | Samsung Sidekick 4G | ZTE Citrine | Samsung Galaxy S21 |
