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| Phone | Ericsson R278d | HTC EVO Design 4G / Hero S (CDMA) | Samsung Sidekick 4G | Cal-Comp EZ |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
4" diag. 16 : 9 |
3.5" diag. 5 : 3 |
? |
| Display Resolution & Type | 101 x 40 pixels |
540 x 960 pixels (~275 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~267 ppi) LCD (TFT/TFD) |
128 x 128 pixels LCD (STN) |
| Display Refresh | ? | 60 Hz | 60 Hz | ? |
| Battery | ? | 1,520 mAh | ? | 800 mAh |
| Processor | ? | 1.2 GHz Qualcomm Snapdragon S2 MSM8655 | 1 GHz Samsung Hummingbird Cortex A8 | ? |
| RAM | ? | 768 MB | ? | ? |
| Storage | ? raw hardware | 4 GB | ? raw hardware | ? raw hardware |
| Main Camera | - | 5 megapixel | 3 megapixel | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | 720p HD | WVGA / 480p | - |
| Front Camera | - | 1 megapixel | Yes | - |
| Weight |
9.28 oz (263g) |
5.22 oz (148g) |
5.7 oz (162g) |
2.47 oz (70g) |
| Dimensions |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
4.78" x 2.44" x 0.46" (122 x 62 x 11.8 mm) |
5" x 2.42" x 0.6" (127 x 61 x 15.2 mm) |
4.04" x 1.71" x 0.63" (103 x 43 x 16 mm) |
| Form Factor | Slab | Slab | Slide | Slab |
| Platform / OS | (proprietary) | Android | Android | (proprietary) |
| Network Bands |
TDMA: 850, 1900 AMPS: 850 |
WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
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| Data Technology | - | WiMAX | HSPA+ 21 | 1xRTT |
| Features | ||||
| Flashlight | - | Yes | - | - |
| GPS / Location | - | n/a | n/a | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | - |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
- |
| Multiple Languages | Yes | n/a | n/a | Yes |
| TTY/TDD (Digital) | - | Yes | Yes | - |
| Alerts | ||||
| Ringer Profiles | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | - |
| Mobile Hotspot | - | n/a | n/a | - |
| USB | - |
Yes Micro-USB |
Yes Micro-USB |
Yes Mini-USB |
| Wi-Fi | - |
Yes 4 (802.11 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 | - | n/a | n/a | - |
| Customization | ||||
| Custom Graphics | - | n/a | n/a | - |
| Custom Ringtones | Yes | n/a | n/a | - |
| Real-Music Ringers | - | n/a | n/a | - |
| Data & Network | ||||
| Data Tethering | Yes | n/a | n/a | - |
| WAP / Web Browser | Yes | n/a | n/a | - |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | - |
| Side Keys | Yes | Yes | Yes | - |
| Text Keyboard, Hardware | - | - | Yes | - |
| Touch Screen | - |
Yes Capacitive |
Yes | - |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | - |
| Messaging | ||||
| Email Client | - | n/a | n/a | - |
| Instant Messaging | - | n/a | n/a | - |
| MMS | - | n/a | n/a | - |
| Text Messaging Templates | - | n/a | n/a | Yes |
| Music | ||||
| FM Radio | - | Yes | - | - |
| Headphone Jack (3.5mm) | - | Yes | Yes | - |
| Music Player | - | n/a | n/a | - |
| Photo & Video | ||||
| DLNA | - | Yes | Yes | - |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | Yes |
| Calculator | - | n/a | n/a | Yes |
| Calendar | - | n/a | n/a | Yes |
| To-Do List | - | n/a | n/a | Yes |
| Voice Memo | - | n/a | n/a | Yes * |
| Software | ||||
| Games | - | n/a | n/a | - |
| Voice | ||||
| Headset Jack (2.5 mm) | - | n/a | n/a | Yes |
| Speaker Phone | - | Yes | Yes | - |
| * Some versions only | ||||
| Ericsson R278d | HTC EVO Design 4G / Hero S (CDMA) | Samsung Sidekick 4G | Cal-Comp EZ | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson R278d | HTC EVO Design 4G / Hero S (CDMA) | Samsung Sidekick 4G | Cal-Comp EZ |
