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| Phone | Samsung Galaxy A21 | Samsung Galaxy Z Flip | Sharp Z-800 (Audiovox 7900) | Samsung SGH-E400 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Not yet released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
6.5" diag. 20 : 9 |
6.7" diag. 22 : 9 |
? | ? |
| Display Resolution & Type |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
1080 x 2636 pixels (~425 ppi) AMOLED |
? LCD (Color) |
128 x 144 pixels LCD (TFT/TFD) |
| Display Refresh | 60 Hz | 60 Hz | ? | ? |
| Battery | 4,000 mAh | 3,300 mAh | ? | 700 mAh |
| Processor | 2 GHz MediaTek Helio P35 (MT6765) | 3 GHz Qualcomm Snapdragon 855+ | ? | ? |
| RAM | 3 GB | 8 GB | ? | ? |
| Storage | 32 GB | 256 GB | ? raw hardware | ? raw hardware |
| Main Camera | 16 megapixel | 12 megapixel | - | - |
| Wide Camera | 8 megapixel | 12 megapixel | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | 1080p HD | 4K UHD | - | - |
| Front Camera | 13 megapixel | 10 megapixel | - | - |
| Weight |
6.81 oz (193g) |
6.46 oz (183g) |
4.25 oz (120g) |
3.1 oz (88g) |
| Dimensions |
6.61" x 3.02" x 0.32" (168 x 77 x 8.1 mm) |
3.44" x 2.9" x 0.68" (87 x 74 x 17.3 mm) |
3.6" x 2" x 1.1" (91 x 51 x 27.9 mm) |
3.46" x 1.65" x 0.89" (88 x 42 x 22.6 mm) |
| Form Factor | Slab | Foldable | Clamshell | Clamshell |
| Platform / OS | Android | Android | (proprietary) | (proprietary) |
| Network Bands |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 66, 71 WCDMA: 2, 3, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
GSM: 900, 1800, 1900 |
| Data Technology | LTE (Cat 6) | LTE (Cat 16) | - | GPRS |
| Features | ||||
| Barometer | - | Yes | - | - |
| Fingerprint Reader |
Yes stand-alone |
Yes stand-alone |
- | - |
| Flashlight | Yes | Yes | - | - |
| Accessibility | ||||
| Hearing Aid Compatible |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
- | - |
| Multiple Languages | n/a | n/a | - | Yes |
| TTY/TDD (Digital) | Yes | Yes | - | - |
| Alerts | ||||
| Extra Display | - | Yes | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | - |
| Infrared (IR) | - | - | - | Yes |
| MirrorLink | - | Yes | - | - |
| NFC | Yes | Yes | - | - |
| USB |
Yes USB Type C |
Yes USB Type C |
- | - |
| Wi-Fi |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
- | - |
| Contacts | ||||
| Picture ID | n/a | n/a | Yes | - |
| Ringer ID | n/a | n/a | Yes | - |
| Customization | ||||
| Custom Graphics | n/a | n/a | Yes | Yes |
| Custom Ringtones | n/a | n/a | Yes | Yes |
| Data & Network | ||||
| Data Tethering | n/a | n/a | Yes | 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 Capacitive |
Yes Capacitive |
- | - |
| Memory | ||||
| Memory Card Slot | Yes | - | - | - |
| Messaging | ||||
| EMS / Picture Messaging | n/a | n/a | - | Yes |
| Text Messaging Templates | n/a | n/a | Yes | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | - | - | - |
| Photo & Video | ||||
| TV Output | - | Yes | - | - |
| Power | ||||
| Fast Charging | Yes | Yes | - | - |
| Wireless Charging | - | Yes | - | - |
| Productivity | ||||
| Alarm | n/a | n/a | Yes | Yes |
| Calculator | n/a | n/a | - | Yes |
| Calendar | n/a | n/a | - | Yes |
| To-Do List | n/a | n/a | - | Yes |
| Software | ||||
| BREW | n/a | n/a | Yes | - |
| Games | n/a | n/a | Yes | Yes |
| Java (J2ME) | n/a | n/a | - | Yes |
| Voice | ||||
| HD Voice | Yes | Yes | - | - |
| Headset Jack (2.5 mm) | n/a | n/a | Yes | Yes |
| Speaker Phone | Yes | Yes | - | - |
| Samsung Galaxy A21 | Samsung Galaxy Z Flip | Sharp Z-800 (Audiovox 7900) | Samsung SGH-E400 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Galaxy A21 | Samsung Galaxy Z Flip | Sharp Z-800 (Audiovox 7900) | Samsung SGH-E400 |
