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| Phone | Palm Treo 680 | HTC Desire 555 | Samsung SCH-A645 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size | ? |
5" diag. 16 : 9 |
? |
| Display Resolution & Type |
320 x 320 pixels LCD (TFT/TFD) |
720 x 1280 pixels (~294 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (STN) |
| Display Refresh | ? | 60 Hz | ? |
| Battery | ? | 2,200 mAh | 1,000 mAh |
| Processor | ? | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | ? |
| RAM | ? | 2 GB | ? |
| Storage | ? raw hardware | 16 GB | ? raw hardware |
| Main Camera | Yes | 8 megapixel | - |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | CIF (352 x 288) | 720p HD | - |
| Front Camera | - | 5 megapixel | - |
| Weight |
5.5 oz (156g) |
4.93 oz (140g) |
3.2 oz (91g) |
| Dimensions |
4.4" x 2.3" x 0.8" (112 x 58 x 20.3 mm) |
5.78" x 2.79" x 0.33" (147 x 71 x 8.4 mm) |
3.54" x 1.79" x 0.94" (90 x 45 x 23.9 mm) |
| Form Factor | Slab | Slab | Clamshell |
| Platform / OS | Palm OS | Android | (proprietary) |
| Network Bands |
GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 AMPS: 850 |
| Data Technology | EDGE | LTE (Cat 4) | 1xRTT |
| Features | |||
| Flashlight | - | Yes | - |
| GPS / Location | n/a | n/a | Yes |
| Accessibility | |||
| Hearing Aid Compatible | - |
Yes * M4, T4 (very tele-coil compatible) |
Yes M3 (mostly compatible) |
| Multiple Languages | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Alerts | |||
| Extra Display | - | - | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | - |
| Infrared (IR) | Yes | - | - |
| USB | Yes |
Yes Micro-USB |
- |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||
| Picture ID | n/a | n/a | Yes |
| Ringer ID | n/a | n/a | - |
| Voice Dialing | n/a | n/a | Yes |
| Customization | |||
| Custom Graphics | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | Yes |
| Real-Music Ringers | n/a | n/a | - |
| Data & Network | |||
| Data Tethering | n/a | n/a | - |
| External Antenna Jack | n/a | n/a | - |
| WAP / Web Browser | n/a | n/a | Yes * |
| Input | |||
| Predictive Text Entry | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - |
| Touch Screen | Yes |
Yes Capacitive |
- |
| Memory | |||
| Memory Card Slot | Yes | Yes | - |
| Messaging | |||
| Email Client | n/a | n/a | - |
| EMS / Picture Messaging | n/a | n/a | Yes |
| MMS | n/a | n/a | - |
| Text Messaging Templates | n/a | n/a | Yes |
| Music | |||
| FM Radio | - | Yes | - |
| Headphone Jack (3.5mm) | - | Yes | - |
| Music Player | n/a | n/a | - |
| Photo & Video | |||
| DLNA | - | Yes | - |
| Miracast | - | Yes | - |
| 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 | Yes |
| Voice Memo | n/a | n/a | Yes |
| Software | |||
| BREW | n/a | n/a | Yes * |
| Games | n/a | n/a | Yes * |
| Voice | |||
| HD Voice | - | Yes | - |
| Headset Jack (2.5 mm) | n/a | n/a | Yes |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Palm Treo 680 | HTC Desire 555 | Samsung SCH-A645 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Palm Treo 680 | HTC Desire 555 | Samsung SCH-A645 |
