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| Phone | AT&T Calypso | Palm Pre 2 (CDMA) | Samsung Galaxy A21 | Samsung SPH-M500 | Kyocera 2235 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
5.5" diag. 18 : 9 |
3.1" diag. 5 : 3 |
6.5" diag. 20 : 9 |
? | ? |
| Display Resolution & Type |
480 x 960 pixels (~195 ppi) LCD (TFT/TFD) |
320 x 480 pixels (~186 ppi) LCD (TFT/TFD) |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
? |
| Display Refresh | 60 Hz | ? | 60 Hz | ? | ? |
| Battery | 2,500 mAh | 1,150 mAh | 4,000 mAh | 800 mAh | ? |
| Processor | 1.5 GHz MediaTek MT6739 | 1 GHz TI 3630 | 2 GHz MediaTek Helio P35 (MT6765) | ? | ? |
| RAM | 1 GB | ? | 3 GB | ? | ? |
| Storage | 16 GB | ? raw hardware | 32 GB | ? raw hardware | ? raw hardware |
| Main Camera | 5 megapixel | 5 megapixel | 16 megapixel | 1 megapixel | - |
| Wide Camera | - | - | 8 megapixel | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | 1080p HD | VGA (640 x 480) | 1080p HD | QCIF (176 x 144) | - |
| Front Camera | 5 megapixel | - | 13 megapixel | - | - |
| Weight |
6 oz (170g) |
5.11 oz (145g) |
6.81 oz (193g) |
2.79 oz (79g) |
4.34 oz (123g) |
| Dimensions |
5.91" x 2.87" x 0.39" (150 x 73 x 9.9 mm) |
3.96" x 2.35" x 0.67" (101 x 60 x 17 mm) |
6.61" x 3.02" x 0.32" (168 x 77 x 8.1 mm) |
3.65" x 1.83" x 0.68" (93 x 46 x 17.3 mm) |
4.72" x 1.89" x 0.95" (120 x 48 x 24.1 mm) |
| Form Factor | Slab | Slide | Slab | Clamshell | Slab |
| Platform / OS | Android | webOS | Android | (proprietary) | (proprietary) |
| Network Bands |
4G LTE: 2, 4, 5, 12, 14, 30 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
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 |
CDMA: 850, 1900 |
CDMA: 850, 1900 AMPS: 850 |
| Data Technology | LTE (Cat 4) | EVDO rA | LTE (Cat 6) | EVDO r0 | 1xRTT |
| Features | |||||
| Fingerprint Reader | - | - |
Yes stand-alone |
- | - |
| Flashlight | Yes | - | Yes | - | - |
| GPS / Location | n/a | n/a | n/a | Yes | - |
| Accessibility | |||||
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
Yes M4 (very compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | n/a | n/a | n/a | Yes | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes | - |
| Alerts | |||||
| Extra Display | - | - | - | Yes | - |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | - |
| Mobile Hotspot | n/a | n/a | n/a | - | - |
| NFC | - | - | Yes | - | - |
| USB |
Yes USB Type C |
Yes Micro-USB |
Yes USB Type C |
Yes | - |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
Yes 802.11 b,g |
Yes 5 (802.11 a,ac,b,g,n) |
- | - |
| Contacts | |||||
| Picture ID | n/a | n/a | n/a | Yes | - |
| Ringer ID | n/a | n/a | n/a | Yes | - |
| Voice Dialing | n/a | n/a | n/a | Yes | Yes |
| Customization | |||||
| Custom Graphics | n/a | n/a | n/a | Yes | - |
| Custom Ringtones | n/a | n/a | n/a | Yes | Yes |
| Real-Music Ringers | n/a | n/a | n/a | Yes | - |
| Data & Network | |||||
| Data Tethering | n/a | n/a | n/a | Yes | Yes |
| WAP / Web Browser | n/a | n/a | n/a | Yes | Yes |
| Input | |||||
| Predictive Text Entry | n/a | n/a | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes | Yes | - |
| Text Keyboard, Hardware | - | Yes | - | - | - |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
- | - |
| Memory | |||||
| Memory Card Slot | Yes | - | Yes | Yes | - |
| Messaging | |||||
| Email Client | n/a | n/a | n/a | - | - |
| Instant Messaging | n/a | n/a | n/a | - | - |
| MMS | n/a | n/a | n/a | - | - |
| Text Messaging Templates | n/a | n/a | n/a | Yes | Yes |
| Music | |||||
| Headphone Jack (3.5mm) | Yes | Yes | Yes | - | - |
| Music Player | n/a | n/a | n/a | Yes | - |
| Power | |||||
| Fast Charging | - | - | Yes | - | - |
| Productivity | |||||
| Alarm | n/a | n/a | n/a | Yes | Yes |
| Calculator | n/a | n/a | n/a | Yes | Yes |
| Calendar | n/a | n/a | n/a | Yes | - |
| To-Do List | n/a | n/a | n/a | - | - |
| Voice Memo | n/a | n/a | n/a | Yes | Yes |
| Software | |||||
| Games | n/a | n/a | n/a | Yes | Yes |
| Java (J2ME) | n/a | n/a | n/a | Yes | - |
| Voice | |||||
| HD Voice | Yes | - | Yes | - | - |
| Headset Jack (2.5 mm) | n/a | n/a | n/a | Yes | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes | - |
| AT&T Calypso | Palm Pre 2 (CDMA) | Samsung Galaxy A21 | Samsung SPH-M500 | Kyocera 2235 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | AT&T Calypso | Palm Pre 2 (CDMA) | Samsung Galaxy A21 | Samsung SPH-M500 | Kyocera 2235 |
