Compare Phones
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| Phone | Apple iPhone 3G | Samsung SGH-X820 | Samsung SGH-A157 | Motorola V551 / V330 / V547 / V555 / V557 | 
| Current U.S. Carriers | (none) | (none) | (none) | (none) | 
| Global Availability | Released | Released | Released | Released | 
| Specifications | ||||
|---|---|---|---|---|
| Display Size | 3.5" diag. 5 : 3 | ? | 1.8" diag. 4 : 3 | ? | 
| Display Resolution & Type | 320 x 480 pixels (~165 ppi) LCD (TFT/TFD) | 220 x 176 pixels LCD (TFT/TFD) | 128 x 160 pixels (~116 ppi) LCD (TFT/TFD) | 176 x 220 pixels LCD (TFT/TFD) | 
| Display Refresh | 60 Hz | ? | ? | ? | 
| Battery | ? | 650 mAh | 800 mAh | 820 mAh | 
| Processor | ? | ? | ? | ? | 
| RAM | ? | ? | ? | ? | 
| Storage | 16 GB * | ? raw hardware | 256 MB | ? raw hardware | 
| Main Camera | 2 megapixel | 2 megapixel | - | Yes | 
| Wide Camera | - | - | - | - | 
| Tele Camera | - | - | - | - | 
| Video Capture | - | ? | - | ? | 
| Front Camera | - | - | - | - | 
| Weight | 4.7 oz (133g) | 2.33 oz (66g) | 2.99 oz (85g) | 4.23 oz (120g) | 
| Dimensions | 4.52" x 2.44" x 0.49" (115 x 62 x 12.4 mm) | 4.45" x 1.97" x 0.27" (113 x 50 x 6.9 mm) | 3.83" x 1.84" x 0.65" (97 x 47 x 16.5 mm) | 3.5" x 1.93" x 0.97" (89 x 49 x 24.6 mm) | 
| Form Factor | Slab | Slab | Clamshell | Clamshell | 
| Platform / OS | iOS | (proprietary) | (proprietary) | (proprietary) | 
| Network Bands | WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 | GSM: 900, 1800, 1900 | WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 | GSM: 850, 900, 1800, 1900 | 
| Data Technology | HSDPA 3.6 | EDGE | ? | EDGE | 
| Features | ||||
| GPS / Location | n/a | - | Yes | - | 
| Accessibility | ||||
| Adjustable Text Size | n/a | - | Yes | - | 
| Hearing Aid Compatible | - | - | Yes | - | 
| Multiple Languages | n/a | Yes | Yes | Yes | 
| TTY/TDD (Digital) | Yes | - | Yes | Yes | 
| Alerts | ||||
| Extra Display | - | - | - | Yes | 
| Ringer Profiles | - | - | Yes | Yes | 
| Connectivity | ||||
| Bluetooth | Yes Classic Audio | Yes Classic Audio | - | Yes Classic Audio | 
| USB | Yes | Yes | Yes Micro-USB | Yes | 
| Wi-Fi | Yes 802.11 b,g | - | - | - | 
| Contacts | ||||
| Picture ID | n/a | Yes | Yes | Yes | 
| Ringer ID | n/a | Yes | Yes | Yes | 
| Voice Dialing | n/a | - | - | Yes | 
| Customization | ||||
| Custom Graphics | n/a | Yes | Yes | Yes | 
| Custom Ringtones | n/a | Yes | Yes | Yes | 
| Real-Music Ringers | n/a | Yes | Yes | Yes | 
| Data & Network | ||||
| Data Tethering | n/a | - | - | Yes | 
| External Antenna Jack | n/a | Yes | - | - | 
| WAP / Web Browser | n/a | Yes | Yes | Yes | 
| Input | ||||
| Predictive Text Entry | n/a | Yes | Yes | Yes | 
| Side Keys | Yes | Yes | - | Yes | 
| Touch Screen | Yes | - | - | - | 
| Messaging | ||||
| Email Client | n/a | Yes | - | Yes | 
| EMS / Picture Messaging | n/a | Yes | - | Yes | 
| Instant Messaging | n/a | - | - | Yes | 
| MMS | n/a | Yes | Yes | Yes | 
| Text Messaging Templates | n/a | Yes | Yes | Yes | 
| Music | ||||
| Headphone Jack (3.5mm) | Yes | - | - | - | 
| Music Player | n/a | - | - | - | 
| Photo & Video | ||||
| TV Output | Yes | Yes | - | - | 
| Productivity | ||||
| Alarm | n/a | Yes | Yes | Yes | 
| Calculator | n/a | Yes | Yes | Yes | 
| Calendar | n/a | Yes | Yes | Yes | 
| To-Do List | n/a | Yes | Yes | - | 
| Voice Memo | n/a | Yes | Yes | Yes | 
| Software | ||||
| Games | n/a | Yes | - | Yes | 
| Java (J2ME) | n/a | Yes | - | Yes | 
| Voice | ||||
| Headset Jack (2.5 mm) | n/a | - | - | Yes | 
| Speaker Phone | Yes | Yes | Yes | Yes | 
| * Some versions only | ||||
| Apple iPhone 3G | Samsung SGH-X820 | Samsung SGH-A157 | Motorola V551 / V330 / V547 / V555 / V557 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
|  |  |  |  | |
| Phone | Apple iPhone 3G | Samsung SGH-X820 | Samsung SGH-A157 | Motorola V551 / V330 / V547 / V555 / V557 | 
 







