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| Phone | Motorola Charm | HTC Touch Pro2 (GSM) / Tilt 2 | ZTE Z431 / Altair |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
2.8" diag. 4 : 3 |
3.6" diag. 5 : 3 |
2.4" diag. 4 : 3 |
| Display Resolution & Type |
320 x 240 pixels (~143 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~259 ppi) LCD (TFT/TFD) |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? |
| Battery | 1,170 mAh | 1,500 mAh | 1,000 mAh |
| Processor | 720 MHz TI OMAP3410 | 528 MHz Qualcomm MSM7200A | ? |
| RAM | ? | ? | ? |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware |
| Main Camera | 3 megapixel | 3 megapixel | 2 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | ? | ? | QVGA (320 x 240) |
| Front Camera | - | - | - |
| Weight |
3.88 oz (110g) |
6.61 oz (187g) |
3.52 oz (100g) |
| Dimensions |
3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm) |
4.59" x 2.36" x 0.68" (117 x 60 x 17.3 mm) |
4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm) |
| Form Factor | Slab | Slab | Slab |
| Platform / OS | Android | Windows Mobile Professional | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
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| Data Technology | HSDPA 3.6 | HSPA 7.2 | ? |
| Features | |||
| GPS / Location | n/a | n/a | Yes |
| Accessibility | |||
| Adjustable Text Size | n/a | n/a | - |
| Hearing Aid Compatible | - | - |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Alerts | |||
| Ringer Profiles | - | - | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | Yes |
| USB |
Yes Micro-USB |
Yes |
Yes Micro-USB |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
Yes 802.11 b,g |
- |
| Contacts | |||
| Picture ID | n/a | n/a | Yes |
| Ringer ID | n/a | n/a | Yes |
| Voice Dialing | n/a | n/a | - |
| Customization | |||
| Custom Graphics | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | Yes |
| Real-Music Ringers | n/a | n/a | Yes |
| Data & Network | |||
| Data Tethering | n/a | n/a | Yes |
| WAP / Web Browser | n/a | n/a | Yes |
| Input | |||
| Predictive Text Entry | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes |
| Stylus | - | Yes | - |
| Text Keyboard, Hardware | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
Yes | - |
| Memory | |||
| Memory Card Slot | Yes | Yes | Yes |
| Messaging | |||
| Email Client | n/a | n/a | Yes |
| Instant Messaging | n/a | n/a | - |
| MMS | n/a | n/a | Yes |
| Text Messaging Templates | n/a | n/a | Yes |
| Music | |||
| Headphone Jack (3.5mm) | Yes | - | Yes |
| Music Player | n/a | n/a | Yes |
| Photo & Video | |||
| TV Output | - | Yes | - |
| Video Calling | n/a | n/a | - |
| Productivity | |||
| Alarm | n/a | n/a | Yes |
| Calculator | n/a | n/a | Yes |
| Calendar | n/a | n/a | Yes |
| To-Do List | n/a | n/a | - |
| Voice Memo | n/a | n/a | Yes |
| Software | |||
| BREW | n/a | n/a | Yes |
| Games | n/a | n/a | Yes |
| Java (J2ME) | n/a | n/a | - |
| Voice | |||
| Push-To-Talk | - | Yes * | - |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Motorola Charm | HTC Touch Pro2 (GSM) / Tilt 2 | ZTE Z431 / Altair | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Motorola Charm | HTC Touch Pro2 (GSM) / Tilt 2 | ZTE Z431 / Altair |
