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| Phone | Samsung Galaxy S21 | Kyocera 7135 | ZTE C88 | Casio G'zOne Rock |
| Current U.S. Carriers | Verizon | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
6.2" diag. 20 : 9 |
? |
2" diag. 4 : 3 |
2.1" diag. 4 : 3 |
| Display Resolution & Type |
1080 x 2400 pixels (~424 ppi) AMOLED |
160 x 160 pixels LCD (TFT/TFD) |
176 x 220 pixels (~141 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~190 ppi) LCD (TFT/TFD) |
| Display Refresh | 120 Hz | ? | ? | ? |
| Battery | 4,000 mAh | ? | 800 mAh | 1,150 mAh |
| Processor | 2.8 GHz Qualcomm Snapdragon 888 | 33 MHz DragonBall | ? | ? |
| RAM | 8 GB | ? | ? | ? |
| Storage | 128 GB * | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 12 megapixel | - | Yes | 2 megapixel |
| Wide Camera | 12 megapixel | - | - | - |
| Tele Camera | 64 megapixel | - | - | - |
| Video Capture | 8K | - | - | ? |
| Front Camera | 10 megapixel | - | - | - |
| Weight |
6.03 oz (171g) |
6.6 oz (187g) |
3.46 oz (98g) |
4.4 oz (125g) |
| Dimensions |
5.97" x 2.8" x 0.31" (152 x 71 x 7.9 mm) |
3.97" x 2.43" x 1.17" (101 x 62 x 29.7 mm) |
3.85" x 1.92" x 0.7" (98 x 49 x 17.8 mm) |
4.1" x 2" x 0.9" (104 x 51 x 22.9 mm) |
| Form Factor | Slab | Clamshell | Clamshell | Clamshell |
| Platform / OS | Android | Palm OS | (proprietary) | (proprietary) |
| 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 |
CDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 |
CDMA: 850, 1900 |
| Data Technology | NR (5G) | 1xRTT | 1xRTT | EVDO rA |
| Features | ||||
| Barometer | Yes | - | - | - |
| Fingerprint Reader |
Yes in-display (ultrasonic) |
- | - | - |
| Flashlight | Yes | - | - | Yes |
| GPS / Location | n/a | n/a | Yes | Yes |
| Ruggedized | - | - | - | Yes |
| Water-Resistant |
Yes IPX8 (SCUBA) |
- | - | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | Yes | - | - | Yes |
| Multiple Languages | n/a | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes |
| Alerts | ||||
| Extra Display | - | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth | Yes | - | Yes | Yes |
| Infrared (IR) | - | Yes | - | - |
| NFC | Yes | - | - | - |
| USB |
Yes USB Type C |
Yes |
Yes Micro-USB |
Yes |
| Wi-Fi |
Yes 6 (802.11 a,ac,ax,b,g,n) |
- | - | - |
| Contacts | ||||
| Picture ID | n/a | n/a | - | Yes |
| Ringer ID | n/a | n/a | Yes | Yes |
| Voice Dialing | n/a | n/a | Yes | Yes |
| Customization | ||||
| Custom Graphics | n/a | n/a | Yes | Yes |
| Custom Ringtones | n/a | n/a | Yes | Yes |
| Real-Music Ringers | n/a | n/a | Yes | Yes |
| Data & Network | ||||
| Data Tethering | n/a | n/a | - | Yes |
| WAP / Web Browser | n/a | n/a | Yes | Yes |
| Input | ||||
| Predictive Text Entry | n/a | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | Yes | Yes | - | - |
| Memory | ||||
| Memory Card Slot | - | Yes | - | Yes |
| Messaging | ||||
| Email Client | n/a | n/a | Yes | Yes |
| Instant Messaging | n/a | n/a | Yes | Yes |
| MMS | n/a | n/a | Yes | Yes |
| Text Messaging Templates | n/a | n/a | Yes | Yes |
| Music | ||||
| Music Player | n/a | n/a | - | Yes |
| Stereo Speakers | Yes | - | - | - |
| Photo & Video | ||||
| TV Output | Yes | - | - | - |
| Power | ||||
| Fast Charging | Yes | - | - | - |
| Wireless Charging | Yes | - | - | - |
| Productivity | ||||
| Alarm | n/a | n/a | Yes | Yes |
| Calculator | n/a | n/a | Yes | Yes |
| Calendar | n/a | n/a | Yes | Yes |
| To-Do List | n/a | n/a | - | - |
| Voice Memo | n/a | n/a | Yes | Yes |
| Software | ||||
| BREW | n/a | n/a | Yes | Yes |
| Games | n/a | n/a | Yes | Yes |
| Voice | ||||
| HD Voice | Yes | - | - | - |
| Headset Jack (2.5 mm) | n/a | n/a | - | Yes |
| Push-To-Talk | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung Galaxy S21 | Kyocera 7135 | ZTE C88 | Casio G'zOne Rock | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Galaxy S21 | Kyocera 7135 | ZTE C88 | Casio G'zOne Rock |
