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| Phone | Ericsson T28 World | AT&T Maestro 3 | PCD CDM-8950 | BlackBerry Pearl 3G 9100 / 9105 | Amazon Fire |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? |
6.5" diag. 20 : 9 |
2" diag. 4 : 3 |
2.3" diag. 1 : 1 |
4.7" diag. 16 : 9 |
| Display Resolution & Type | ? |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
176 x 220 pixels (~141 ppi) LCD (TFT/TFD) |
360 x 400 pixels (~238 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | ? | ? |
| Battery | 500 mAh | 3,900 mAh | 920 mAh | 1,150 mAh | 2,400 mAh |
| Processor | ? | 2 GHz MediaTek Helio A22 (MT6761) | ? | ? | 2.2 GHz Qualcomm Snapdragon 800 |
| RAM | ? | 3 GB | ? | ? | 2 GB |
| Storage | ? raw hardware | 32 GB | ? raw hardware | ? raw hardware | 32 GB * |
| Main Camera | - | 13 megapixel | 1 megapixel | 3 megapixel | 13 megapixel |
| Wide Camera | - | 5 megapixel | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | - | 1080p HD | ? | ? | 1080p HD |
| Front Camera | - | 5 megapixel | - | - | 2 megapixel |
| Weight |
3.14 oz (89g) |
6.24 oz (177g) |
3.2 oz (91g) |
3.3 oz (94g) |
5.64 oz (160g) |
| Dimensions |
3.9" x 2" x 0.6" (99 x 51 x 15.2 mm) |
6.58" x 3.03" x 0.33" (167 x 77 x 8.4 mm) |
3.7" x 1.9" x 0.8" (94 x 48 x 20.3 mm) |
4.25" x 1.96" x 0.52" (108 x 50 x 13.2 mm) |
5.5" x 2.6" x 0.35" (140 x 66 x 8.9 mm) |
| Form Factor | Flip | Slab | Clamshell | Slab | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | BlackBerry OS | (proprietary) |
| Network Bands |
GSM: 900, 1900 |
4G LTE: 2, 4, 5, 12, 14, 30 |
CDMA: 850, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 17 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
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| Data Technology | - | LTE (Cat 4) | EVDO r0 | HSDPA 3.6 | LTE (Cat 4) |
| Features | |||||
| Barometer | - | Yes | - | - | - |
| Fingerprint Reader | - |
Yes stand-alone |
- | - | - |
| Flashlight | - | Yes | - | - | Yes |
| GPS / Location | - | n/a | Yes | n/a | Yes |
| Accessibility | |||||
| Adjustable Text Size | - | n/a | - | n/a | - |
| Hearing Aid Compatible | - |
Yes M4, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M3 (mostly compatible) |
Yes M4, T4 (very tele-coil compatible) |
| Multiple Languages | - | n/a | Yes | n/a | Yes |
| TTY/TDD (Digital) | - | - | Yes | - | Yes |
| Alerts | |||||
| Extra Display | - | - | Yes | - | - |
| Ringer Profiles | Yes | - | - | Yes | - |
| Connectivity | |||||
| Bluetooth | - | Yes | Yes | Yes | Yes |
| Mobile Hotspot | - | n/a | - | n/a | Yes |
| NFC | - | - | - | - | Yes |
| USB | - |
Yes USB Type C |
Yes |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
- |
Yes 4 (802.11 b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | |||||
| Picture ID | - | n/a | Yes | n/a | Yes |
| Ringer ID | - | n/a | Yes | n/a | Yes |
| Voice Dialing | Yes | n/a | Yes | n/a | Yes |
| Customization | |||||
| Custom Graphics | - | n/a | Yes | n/a | - |
| Custom Ringtones | Yes | n/a | Yes | n/a | Yes |
| Real-Music Ringers | - | n/a | Yes | n/a | - |
| Data & Network | |||||
| Data Tethering | Yes | n/a | Yes | n/a | Yes |
| WAP / Web Browser | - | n/a | Yes | n/a | Yes |
| Input | |||||
| Predictive Text Entry | - | n/a | Yes | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | - | Yes * | - |
| Touch Screen | - |
Yes Capacitive |
- | - |
Yes Capacitive |
| Memory | |||||
| Memory Card Slot | - | Yes | Yes | Yes | - |
| Messaging | |||||
| Email Client | - | n/a | - | n/a | Yes |
| EMS / Picture Messaging | - | n/a | Yes | n/a | - |
| Instant Messaging | - | n/a | - | n/a | - |
| MMS | - | n/a | Yes | n/a | Yes |
| Text Messaging Templates | - | n/a | Yes | n/a | Yes |
| Music | |||||
| Headphone Jack (3.5mm) | - | Yes | - | Yes | Yes |
| Music Player | - | n/a | Yes | n/a | Yes |
| Stereo Speakers | - | - | - | - | Yes |
| Photo & Video | |||||
| Miracast | - | - | - | - | Yes |
| TV Output | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | Yes | n/a | Yes | n/a | Yes |
| Calculator | Yes | n/a | Yes | n/a | Yes |
| Calendar | - | n/a | Yes | n/a | Yes |
| To-Do List | - | n/a | - | n/a | - |
| Voice Memo | - | n/a | Yes | n/a | Yes |
| Software | |||||
| BREW | - | n/a | Yes | n/a | - |
| Games | Yes | n/a | Yes | n/a | Yes |
| Java (J2ME) | - | n/a | - | n/a | - |
| Voice | |||||
| HD Voice | - | Yes | - | - | Yes |
| Headset Jack (2.5 mm) | - | n/a | Yes | n/a | - |
| Speaker Phone | - | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| Ericsson T28 World | AT&T Maestro 3 | PCD CDM-8950 | BlackBerry Pearl 3G 9100 / 9105 | Amazon Fire | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Ericsson T28 World | AT&T Maestro 3 | PCD CDM-8950 | BlackBerry Pearl 3G 9100 / 9105 | Amazon Fire |
