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| Phone | AT&T Calypso | Ericsson R278d | Siemens M55 | Huawei W1 | Sony Ericsson Z750 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
5.5" diag. 18 : 9 |
? | ? |
4" diag. 5 : 3 |
2.2" diag. 4 : 3 |
| Display Resolution & Type |
480 x 960 pixels (~195 ppi) LCD (TFT/TFD) |
101 x 40 pixels |
101 x 80 pixels LCD (Color) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~182 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | ? | ? |
| Battery | 2,500 mAh | ? | 700 mAh | 1,950 mAh | 950 mAh |
| Processor | 1.5 GHz MediaTek MT6739 | ? | ? | 1.2 GHz Qualcomm Snapdragon 400 MSM8230 | ? |
| RAM | 1 GB | ? | ? | 512 MB | ? |
| Storage | 16 GB | ? raw hardware | ? raw hardware | 4 GB | ? raw hardware |
| Main Camera | 5 megapixel | - | - | 5 megapixel | 2 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | 1080p HD | - | - | 720p HD | ? |
| Front Camera | 5 megapixel | - | - | Yes | - |
| Weight |
6 oz (170g) |
9.28 oz (263g) |
2.93 oz (83g) |
4.41 oz (125g) |
3.88 oz (110g) |
| Dimensions |
5.91" x 2.87" x 0.39" (150 x 73 x 9.9 mm) |
5.1" x 2" x 1" (130 x 51 x 25.4 mm) |
3.98" x 1.81" x 0.83" (101 x 46 x 21.1 mm) |
4.84" x 2.5" x 0.41" (123 x 64 x 10.4 mm) |
3.83" x 1.93" x 0.79" (97 x 49 x 20.1 mm) |
| Form Factor | Slab | Slab | Slab | Slab | Clamshell |
| Platform / OS | Android | (proprietary) | (proprietary) | Windows | (proprietary) |
| Network Bands |
4G LTE: 2, 4, 5, 12, 14, 30 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
TDMA: 850, 1900 AMPS: 850 |
GSM: 900, 1800, 1900 |
WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | LTE (Cat 4) | - | GPRS | HSPA+ 21 | HSDPA 1.8 |
| Features | |||||
| Flashlight | Yes | - | - | - | - |
| GPS / Location | n/a | - | Yes | n/a | - |
| Accessibility | |||||
| Adjustable Text Size | n/a | - | - | n/a | - |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
- | - |
Yes M3 (mostly compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | n/a | Yes | Yes | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | - | Yes |
| Alerts | |||||
| Extra Display | - | - | - | - | Yes |
| Ringer Profiles | - | Yes | - | - | - |
| Connectivity | |||||
| Bluetooth | Yes | - | - | Yes | Yes |
| USB |
Yes USB Type C |
- | - |
Yes Micro-USB |
Yes |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- | - |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||||
| Picture ID | n/a | - | - | n/a | Yes |
| Ringer ID | n/a | - | - | n/a | Yes |
| Voice Dialing | n/a | - | Yes | n/a | - |
| Customization | |||||
| Custom Graphics | n/a | - | Yes | n/a | Yes |
| Custom Ringtones | n/a | Yes | Yes | n/a | Yes |
| Real-Music Ringers | n/a | - | - | n/a | Yes |
| Data & Network | |||||
| Data Tethering | n/a | Yes | Yes | n/a | Yes |
| External Antenna Jack | n/a | - | - | n/a | Yes |
| WAP / Web Browser | n/a | Yes | Yes | n/a | Yes |
| Input | |||||
| Predictive Text Entry | n/a | Yes | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes | - |
| Touch Screen |
Yes Capacitive |
- | - |
Yes Capacitive |
- |
| Memory | |||||
| Memory Card Slot | Yes | - | - | Yes | Yes |
| Messaging | |||||
| Email Client | n/a | - | Yes | n/a | Yes |
| EMS / Picture Messaging | n/a | - | Yes | n/a | - |
| Instant Messaging | n/a | - | - | n/a | Yes |
| MMS | n/a | - | Yes | n/a | Yes |
| Text Messaging Templates | n/a | - | - | n/a | Yes |
| Music | |||||
| FM Radio | - | - | - | - | Yes |
| Headphone Jack (3.5mm) | Yes | - | - | Yes | - |
| Music Player | n/a | - | - | n/a | Yes |
| Photo & Video | |||||
| Video Calling | n/a | - | - | n/a | Yes * |
| Productivity | |||||
| Alarm | n/a | Yes | - | n/a | Yes |
| Calculator | n/a | - | - | n/a | Yes |
| Calendar | n/a | - | Yes | n/a | Yes |
| To-Do List | n/a | - | - | n/a | Yes |
| Voice Memo | n/a | - | - | n/a | Yes |
| Software | |||||
| Games | n/a | - | Yes | n/a | Yes |
| Java (J2ME) | n/a | - | Yes | n/a | Yes |
| Voice | |||||
| HD Voice | Yes | - | - | - | - |
| Speaker Phone | Yes | - | Yes | Yes | Yes |
| * Some versions only | |||||
| AT&T Calypso | Ericsson R278d | Siemens M55 | Huawei W1 | Sony Ericsson Z750 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | AT&T Calypso | Ericsson R278d | Siemens M55 | Huawei W1 | Sony Ericsson Z750 |
