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| Price | $262.75 to $499.99 | $199.95 | $79.99 to $349.99 | $199.99 to $599.99 | $179.99 to $599.99 |
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| Release date | June 30, 2008 | May 19, 2009 | October 28, 2009 | October 11, 2009 | |
| The Bottom Line | The HP iPaq 910c offers mobile professionals a well-stocked, messaging-centric smartphone, but it faces stiff competition from the likes of HTC, Samsung, and Motorola. | Despite some niggling design flaws and the lack of 3G support, the HP iPaq 510 Voice Messenger offers outstanding voice-command features as well as the enhanced productivity tools of Windows Mobile 6. | As the successor to the BlackJack series, the Samsung Jack brings a fresh look and some nice feature upgrades to make it one of AT&T's more solid and affordable messaging smartphones. However, we tend to favor the Nokia E71x's design. | Some minor design issues and multimedia quibbles aside, the Motorola Droid is the most powerful and fastest Google Android device to date. It fully embraces the openness of the Android platform and offers Verizon customers a smartphone that certainly rivals the other touch-screen devices on the market. | While it could use a boost in the performance department, the HTC Hero is the most feature-packed Google Android device to date, bringing some notable improvements and a highly customizable interface. |
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| Cellular technology | WCDMA (UMTS) / GSM | GSM | WCDMA (UMTS) / GSM | CDMA2000 1X | Info unavailable |
| Weight | 5.1 oz | 3.6 oz | 4 oz | 6 oz | Info unavailable |
| Service & support details type | Limited warranty Technical support | Limited warranty Technical support | Info unavailable | Info unavailable | Info unavailable |
| Talk time | Up to 240 min | Up to 390 min | 420 min | 385 min | Info unavailable |
| Wireless Interface | IEEE 802.11b IEEE 802.11g Bluetooth 2.0 EDR | Bluetooth IEEE 802.11b IEEE 802.11g | IEEE 802.11b IEEE 802.11g Bluetooth 2.0 | IEEE 802.11b IEEE 802.11g Bluetooth 2.1 EDR | Info unavailable |
| Service Provider | Info unavailable | Info unavailable | AT&T | Verizon Wireless | Sprint Nextel |
| Band / mode | WCDMA (UMTS) / GSM 850/900/1800/1900 | GSM 850/900/1800/1900 (Quadband) | WCDMA (UMTS) / GSM 850/900/1800/1900 | CDMA2000 1X 1900/800 | Info unavailable |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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