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| Phone | Sony Ericsson Z550a | ZTE Blade Spark | Siemens CF75 | Ericsson T28 World |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Not yet released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
1.9" diag. 4 : 3 |
5.5" diag. 16 : 9 |
? | ? |
| Display Resolution & Type |
176 x 220 pixels (~148 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~267 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (STN) |
? |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | ? | 3,140 mAh | 600 mAh | 500 mAh |
| Processor | ? | 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) | ? | ? |
| RAM | ? | 2 GB | ? | ? |
| Storage | ? raw hardware | 16 GB | ? raw hardware | ? raw hardware |
| Main Camera | 1 megapixel | 13 megapixel | Yes | - |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | 1080p HD | - | - |
| Front Camera | - | 5 megapixel | - | - |
| Weight |
3.26 oz (92g) |
6.12 oz (173g) |
3.17 oz (90g) |
3.14 oz (89g) |
| Dimensions |
3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm) |
6.14" x 3.06" x 0.38" (156 x 78 x 9.7 mm) |
3.43" x 1.73" x 1.26" (87 x 44 x 32 mm) |
3.9" x 2" x 0.6" (99 x 51 x 15.2 mm) |
| Form Factor | Clamshell | Slab | Clamshell | Flip |
| Platform / OS | (proprietary) | Android | (proprietary) | (proprietary) |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
GSM: 900, 1900 |
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| Data Technology | GPRS | LTE (Cat 4) | EDGE | - |
| Features | ||||
| Fingerprint Reader | - |
Yes stand-alone |
- | - |
| Flashlight | - | Yes | - | - |
| Accessibility | ||||
| Hearing Aid Compatible | - | Yes | - | - |
| Multiple Languages | Yes | n/a | Yes | - |
| TTY/TDD (Digital) | Yes | Yes | - | - |
| Alerts | ||||
| Extra Display | Yes | - | Yes | - |
| Ringer Profiles | Yes | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes |
Yes Classic Audio |
- | - |
| Infrared (IR) | - | - | Yes | - |
| USB | Yes |
Yes USB Type C |
Yes | - |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
- | - |
| Contacts | ||||
| Picture ID | Yes | n/a | - | - |
| Ringer ID | Yes | n/a | - | - |
| Voice Dialing | Yes | n/a | - | Yes |
| Customization | ||||
| Custom Graphics | Yes | n/a | Yes | - |
| Custom Ringtones | Yes | n/a | Yes | Yes |
| Real-Music Ringers | Yes | n/a | - | - |
| Data & Network | ||||
| Data Tethering | Yes | n/a | Yes | Yes |
| WAP / Web Browser | Yes | n/a | Yes | - |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | - |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | Yes | - | - |
| Memory | ||||
| Memory Card Slot | Yes | Yes | - | - |
| Messaging | ||||
| Email Client | Yes | n/a | Yes | - |
| EMS / Picture Messaging | - | n/a | Yes | - |
| MMS | Yes | n/a | Yes | - |
| Text Messaging Templates | Yes | n/a | Yes | - |
| Music | ||||
| FM Radio | Yes | - | - | - |
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | Yes | n/a | - | - |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | Yes |
| Calculator | Yes | n/a | Yes | Yes |
| Calendar | Yes | n/a | Yes | - |
| To-Do List | Yes | n/a | Yes | - |
| Voice Memo | Yes | n/a | Yes | - |
| Software | ||||
| Games | Yes | n/a | Yes | Yes |
| Java (J2ME) | Yes | n/a | Yes | - |
| Voice | ||||
| HD Voice | - | Yes | - | - |
| Push-To-Talk | Yes * | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes | - |
| * Some versions only | ||||
| Sony Ericsson Z550a | ZTE Blade Spark | Siemens CF75 | Ericsson T28 World | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Sony Ericsson Z550a | ZTE Blade Spark | Siemens CF75 | Ericsson T28 World |
