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| Phone | Samsung Knack U310 | Ericsson T66 | Cricket Debut S2 / AT&T Calypso 4 | HTC EVO Design 4G / Hero S (CDMA) | Ericsson R278d |
| Current U.S. Carriers | (none) | (none) | AT&T | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
2.2" diag. 4 : 3 |
? |
6.1" diag. 19.5 : 9 |
4" diag. 16 : 9 |
? |
| Display Resolution & Type |
176 x 220 pixels (~128 ppi) LCD (TFT/TFD) |
? |
720 x 1560 pixels (~282 ppi) LCD (TFT/TFD) |
540 x 960 pixels (~275 ppi) LCD (TFT/TFD) |
101 x 40 pixels |
| Display Refresh | ? | ? | 60 Hz | 60 Hz | ? |
| Battery | 1,000 mAh | ? | 3,000 mAh | 1,520 mAh | ? |
| Processor | ? | ? | 2 GHz MediaTek Helio A22 (MT6761WB) | 1.2 GHz Qualcomm Snapdragon S2 MSM8655 | ? |
| RAM | ? | ? | 3 GB | 768 MB | ? |
| Storage | ? raw hardware | ? raw hardware | 64 GB | 4 GB | ? raw hardware |
| Main Camera | - | - | 8 megapixel | 5 megapixel | - |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | - | ? | 720p HD | - |
| Front Camera | - | - | 5 megapixel | 1 megapixel | - |
| Weight |
3.63 oz (103g) |
2.08 oz (59g) |
5.64 oz (160g) |
5.22 oz (148g) |
9.28 oz (263g) |
| Dimensions |
3.78" x 2.01" x 0.74" (96 x 51 x 18.8 mm) |
3.62" x 1.61" x 0.69" (92 x 41 x 17.5 mm) |
6.11" x 2.87" x 0.34" (155 x 73 x 8.6 mm) |
4.78" x 2.44" x 0.46" (122 x 62 x 11.8 mm) |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
| Form Factor | Clamshell | Slab | Slab | Slab | Slab |
| Platform / OS | (proprietary) | (proprietary) | Android | Android | (proprietary) |
| Network Bands |
CDMA: 850, 1900 |
GSM: 900, 1800, 1900 |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30, 66 WCDMA: 1, 2, 4, 5, 8 |
TDMA: 850, 1900 AMPS: 850 |
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| Data Technology | - | - | LTE (Cat 4) | WiMAX | - |
| Features | |||||
| Flashlight | - | - | Yes | Yes | - |
| GPS / Location | Yes | - | n/a | n/a | - |
| Accessibility | |||||
| Adjustable Text Size | Yes | - | n/a | n/a | - |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
- |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
- |
| Multiple Languages | Yes | Yes | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | - | Yes | - |
| Alerts | |||||
| Extra Display | Yes | - | - | - | - |
| Ringer Profiles | - | Yes | - | - | Yes |
| Connectivity | |||||
| Bluetooth | - | - | Yes | Yes | - |
| Mobile Hotspot | - | - | n/a | n/a | - |
| USB | - | - |
Yes USB Type C |
Yes Micro-USB |
- |
| Wi-Fi | - | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||||
| Picture ID | - | - | n/a | n/a | - |
| Ringer ID | - | - | n/a | n/a | - |
| Voice Dialing | Yes | - | n/a | n/a | - |
| Customization | |||||
| Custom Graphics | - | Yes | n/a | n/a | - |
| Custom Ringtones | - | Yes | n/a | n/a | Yes |
| Real-Music Ringers | - | - | n/a | n/a | - |
| Data & Network | |||||
| Data Tethering | - | - | n/a | n/a | Yes |
| WAP / Web Browser | - | Yes | n/a | n/a | Yes |
| Input | |||||
| Predictive Text Entry | Yes | Yes | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | - | - |
Yes Capacitive |
Yes Capacitive |
- |
| Memory | |||||
| Memory Card Slot | - | - | Yes | Yes | - |
| Messaging | |||||
| Email Client | - | - | n/a | n/a | - |
| EMS / Picture Messaging | Yes | Yes | n/a | n/a | - |
| Instant Messaging | - | - | n/a | n/a | - |
| MMS | - | - | n/a | n/a | - |
| Text Messaging Templates | - | Yes | n/a | n/a | - |
| Music | |||||
| FM Radio | - | - | - | Yes | - |
| Headphone Jack (3.5mm) | - | - | Yes | Yes | - |
| Music Player | - | - | n/a | n/a | - |
| Photo & Video | |||||
| DLNA | - | - | - | Yes | - |
| Power | |||||
| Fast Charging | - | - | Yes | - | - |
| Productivity | |||||
| Alarm | Yes | Yes | n/a | n/a | Yes |
| Calculator | Yes | Yes | n/a | n/a | - |
| Calendar | Yes | Yes | n/a | n/a | - |
| To-Do List | - | Yes | n/a | n/a | - |
| Voice Memo | - | - | n/a | n/a | - |
| Software | |||||
| Games | - | Yes | n/a | n/a | - |
| Voice | |||||
| HD Voice | - | - | Yes | - | - |
| Headset Jack (2.5 mm) | Yes | - | n/a | n/a | - |
| Speaker Phone | Yes | - | Yes | Yes | - |
| Samsung Knack U310 | Ericsson T66 | Cricket Debut S2 / AT&T Calypso 4 | HTC EVO Design 4G / Hero S (CDMA) | Ericsson R278d | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Knack U310 | Ericsson T66 | Cricket Debut S2 / AT&T Calypso 4 | HTC EVO Design 4G / Hero S (CDMA) | Ericsson R278d |
