Compare Phones
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| Phone | Apple iPhone 4 (CDMA) | Ericsson T28 World | BlackBerry Storm2 9550 | AT&T Maestro 3 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
3.5" diag. 5 : 3 |
? |
3.3" diag. 4 : 3 |
6.5" diag. 20 : 9 |
| Display Resolution & Type |
640 x 960 pixels (~330 ppi) LCD (TFT/TFD) |
? |
360 x 480 pixels (~185 ppi) LCD (TFT/TFD) |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | 60 Hz |
| Battery | ? | 500 mAh | 1,400 mAh | 3,900 mAh |
| Processor | ? | ? | ? | 2 GHz MediaTek Helio A22 (MT6761) |
| RAM | ? | ? | ? | 3 GB |
| Storage | 8 GB * | ? raw hardware | ? raw hardware | 32 GB |
| Main Camera | 5 megapixel | - | 3 megapixel | 13 megapixel |
| Wide Camera | - | - | - | 5 megapixel |
| Tele Camera | - | - | - | - |
| Video Capture | 720p HD | - | ? | 1080p HD |
| Front Camera | Yes | - | - | 5 megapixel |
| Weight |
4.8 oz (136g) |
3.14 oz (89g) |
5.64 oz (160g) |
6.24 oz (177g) |
| Dimensions |
4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm) |
3.9" x 2" x 0.6" (99 x 51 x 15.2 mm) |
4.43" x 2.45" x 0.55" (113 x 62 x 14 mm) |
6.58" x 3.03" x 0.33" (167 x 77 x 8.4 mm) |
| Form Factor | Slab | Flip | Slab | Slab |
| Platform / OS | iOS | (proprietary) | BlackBerry OS | Android |
| Network Bands |
CDMA: 850, 1900 |
GSM: 900, 1900 |
WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 14, 30 |
| Data Technology | EVDO rA | - | EVDO rA | LTE (Cat 4) |
| Features | ||||
| Barometer | - | - | - | Yes |
| Fingerprint Reader | - | - | - |
Yes stand-alone |
| Flashlight | - | - | - | Yes |
| GPS / Location | n/a | - | n/a | n/a |
| Accessibility | ||||
| Adjustable Text Size | n/a | - | n/a | n/a |
| Hearing Aid Compatible | Yes | - | Yes | Yes |
| Multiple Languages | n/a | - | n/a | n/a |
| TTY/TDD (Digital) | - | - | Yes | - |
| Alerts | ||||
| Ringer Profiles | - | Yes | Yes | - |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
- |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | n/a | - | n/a | n/a |
| USB | Yes | - | Yes |
Yes USB Type C |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- |
Yes 802.11 b,g |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | n/a | - | n/a | n/a |
| Ringer ID | n/a | - | n/a | n/a |
| Voice Dialing | n/a | Yes | n/a | n/a |
| Customization | ||||
| Custom Graphics | n/a | - | n/a | n/a |
| Custom Ringtones | n/a | Yes | n/a | n/a |
| Real-Music Ringers | n/a | - | n/a | n/a |
| Data & Network | ||||
| Data Tethering | n/a | Yes | n/a | n/a |
| WAP / Web Browser | n/a | - | n/a | n/a |
| Input | ||||
| Predictive Text Entry | n/a | - | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | Yes | - | Yes | Yes |
| Memory | ||||
| Memory Card Slot | - | - | Yes | Yes |
| Messaging | ||||
| Email Client | n/a | - | n/a | n/a |
| Instant Messaging | n/a | - | n/a | n/a |
| MMS | n/a | - | n/a | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | Yes | - | Yes | Yes |
| Music Player | n/a | - | n/a | n/a |
| Photo & Video | ||||
| TV Output | Yes | - | - | - |
| Video Calling | n/a | - | n/a | n/a |
| Productivity | ||||
| Alarm | n/a | Yes | n/a | n/a |
| Calculator | n/a | Yes | n/a | n/a |
| Calendar | n/a | - | n/a | n/a |
| To-Do List | n/a | - | n/a | n/a |
| Voice Memo | n/a | - | n/a | n/a |
| Software | ||||
| Games | n/a | Yes | n/a | n/a |
| Java (J2ME) | n/a | - | n/a | n/a |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Speaker Phone | Yes | - | Yes | Yes |
| Apple iPhone 4 (CDMA) | Ericsson T28 World | BlackBerry Storm2 9550 | AT&T Maestro 3 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Apple iPhone 4 (CDMA) | Ericsson T28 World | BlackBerry Storm2 9550 | AT&T Maestro 3 |
