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| Phone | Samsung SGH-E640 | ZTE Engage LT / Engage MT | Siemens A56 / A56i | HTC Touch Pro2 (GSM) / Tilt 2 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
4" diag. 5 : 3 |
? |
3.6" diag. 5 : 3 |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
101 x 64 pixels |
480 x 800 pixels (~259 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? |
| Battery | 800 mAh | 1,900 mAh | 700 mAh | 1,500 mAh |
| Processor | ? | ? | ? | 528 MHz Qualcomm MSM7200A |
| RAM | ? | 1 GB | ? | ? |
| Storage | ? raw hardware | 4 GB | ? raw hardware | ? raw hardware |
| Main Camera | 1 megapixel | 3 megapixel | - | 3 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QCIF (176 x 144) | WVGA / 480p | - | ? |
| Front Camera | - | Yes | - | - |
| Weight |
3.17 oz (90g) |
5.09 oz (144g) |
3 oz (85g) |
6.61 oz (187g) |
| Dimensions |
3.37" x 1.78" x 0.93" (86 x 45 x 23.6 mm) |
4.78" x 2.54" x 0.46" (121 x 64 x 11.7 mm) |
4" x 1.7" x 0.8" (102 x 43 x 20.3 mm) |
4.59" x 2.36" x 0.68" (117 x 60 x 17.3 mm) |
| Form Factor | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | Windows Mobile Professional |
| Network Bands |
GSM: 900, 1800, 1900 |
CDMA: 850, 1700, 1900 |
GSM: 850, 1900 |
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| Data Technology | GPRS | EVDO rA | - | HSPA 7.2 |
| Features | ||||
| GPS / Location | - | n/a | Yes | n/a |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | - | n/a |
| Multiple Languages | Yes | n/a | - | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | - | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| USB | Yes |
Yes Micro-USB |
- | Yes |
| Wi-Fi | - | Yes | - |
Yes 802.11 b,g |
| Contacts | ||||
| Picture ID | Yes | n/a | Yes | n/a |
| Ringer ID | Yes | n/a | Yes | n/a |
| Voice Dialing | - | n/a | - | n/a |
| Customization | ||||
| Changeable Body Plates | - | - | Yes | - |
| Custom Graphics | Yes | n/a | Yes | n/a |
| Custom Ringtones | Yes | n/a | Yes | n/a |
| Real-Music Ringers | Yes | n/a | - | n/a |
| Data & Network | ||||
| Data Tethering | - | n/a | - | n/a |
| WAP / Web Browser | Yes | n/a | Yes | n/a |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | n/a |
| Side Keys | Yes | Yes | - | Yes |
| Stylus | - | - | - | Yes |
| Text Keyboard, Hardware | - | - | - | Yes |
| Touch Screen | - |
Yes Capacitive |
- | Yes |
| Memory | ||||
| Memory Card Slot | - | Yes | - | Yes |
| Messaging | ||||
| Email Client | Yes | n/a | - | n/a |
| EMS / Picture Messaging | Yes | n/a | Yes | n/a |
| Instant Messaging | - | n/a | - | n/a |
| MMS | Yes | n/a | - | n/a |
| Text Messaging Templates | Yes | n/a | - | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | Yes | n/a | - | n/a |
| Photo & Video | ||||
| TV Output | - | - | - | Yes |
| Video Calling | - | n/a | - | n/a |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | n/a |
| Calculator | Yes | n/a | Yes | n/a |
| Calendar | Yes | n/a | - | n/a |
| To-Do List | Yes | n/a | - | n/a |
| Voice Memo | Yes | n/a | - | n/a |
| Software | ||||
| Games | Yes | n/a | Yes | n/a |
| Java (J2ME) | Yes | n/a | - | n/a |
| Voice | ||||
| Push-To-Talk | - | - | - | Yes * |
| Speaker Phone | Yes | Yes | - | Yes |
| * Some versions only | ||||
| Samsung SGH-E640 | ZTE Engage LT / Engage MT | Siemens A56 / A56i | HTC Touch Pro2 (GSM) / Tilt 2 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-E640 | ZTE Engage LT / Engage MT | Siemens A56 / A56i | HTC Touch Pro2 (GSM) / Tilt 2 |
