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| Phone | Asus PadFone X mini | Samsung SGH-X820 | Samsung SGH-X640 | BlackBerry Key2 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
4.5" diag. 16 : 9 |
? | ? |
4.5" diag. 5 : 3 |
| Display Resolution & Type |
480 x 854 pixels (~218 ppi) LCD (TFT/TFD) |
220 x 176 pixels LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
1080 x 1620 pixels (~433 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | 60 Hz |
| Battery | 2,060 mAh | 650 mAh | 800 mAh | 3,500 mAh |
| Processor | 1.6 GHz Intel Atom Z2560 | ? | ? | 2.2 GHz Qualcomm Snapdragon 660 |
| RAM | 1 GB | ? | ? | 6 GB |
| Storage | 8 GB | ? raw hardware | ? raw hardware | 64 GB * |
| Main Camera | 5 megapixel | 2 megapixel | Yes | 12 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | 12 megapixel |
| Video Capture | 1080p HD | ? | - | 4K UHD |
| Front Camera | 2 megapixel | - | - | 8 megapixel |
| Weight |
5.26 oz (149g) |
2.33 oz (66g) |
3 oz (85g) |
5.93 oz (168g) |
| Dimensions |
5.2" x 2.61" x 0.5" (132 x 66 x 12.6 mm) |
4.45" x 1.97" x 0.27" (113 x 50 x 6.9 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
5.96" x 2.82" x 0.33" (151 x 72 x 8.4 mm) |
| Form Factor | Slab | Slab | Clamshell | Slab |
| Platform / OS | Android | (proprietary) | (proprietary) | Android |
| Network Bands |
4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 28, 29, 30, 38, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
| Data Technology | LTE (Cat 3) | EDGE | GPRS | LTE (Cat 11) |
| Features | ||||
| Fingerprint Reader | - | - | - |
Yes stand-alone |
| Flashlight | Yes | - | - | Yes |
| GPS / Location | n/a | - | - | n/a |
| Accessibility | ||||
| Adjustable Text Size | n/a | - | - | n/a |
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
- | - |
Yes M4, T3 (mostly tele-coil compatible) |
| Multiple Languages | n/a | Yes | Yes | n/a |
| TTY/TDD (Digital) | Yes | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | - | Yes |
| Mobile Hotspot | n/a | - | - | n/a |
| NFC | - | - | - | Yes |
| USB |
Yes Micro-USB |
Yes | - |
Yes USB Type C |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
- | - |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | n/a | Yes | Yes | n/a |
| Ringer ID | n/a | Yes | Yes | n/a |
| Voice Dialing | n/a | - | - | n/a |
| Customization | ||||
| Custom Graphics | n/a | Yes | Yes | n/a |
| Custom Ringtones | n/a | Yes | Yes | n/a |
| Real-Music Ringers | n/a | Yes | - | n/a |
| Data & Network | ||||
| Data Tethering | n/a | - | - | n/a |
| External Antenna Jack | n/a | Yes | - | n/a |
| WAP / Web Browser | n/a | Yes | Yes | n/a |
| Input | ||||
| Predictive Text Entry | n/a | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | - | Yes |
| Touch Screen |
Yes Capacitive |
- | - |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | Yes | - | - | Yes |
| Messaging | ||||
| Email Client | n/a | Yes | - | n/a |
| EMS / Picture Messaging | n/a | Yes | Yes | n/a |
| Instant Messaging | n/a | - | - | n/a |
| MMS | n/a | Yes | Yes | n/a |
| Text Messaging Templates | n/a | Yes | Yes | n/a |
| Music | ||||
| FM Radio | - | - | - | Yes |
| Headphone Jack (3.5mm) | Yes | - | - | Yes |
| Music Player | n/a | - | - | n/a |
| Photo & Video | ||||
| TV Output | - | Yes | - | Yes |
| Power | ||||
| Fast Charging | - | - | - | Yes |
| Productivity | ||||
| Alarm | n/a | Yes | Yes | n/a |
| Calculator | n/a | Yes | Yes | n/a |
| Calendar | n/a | Yes | Yes | n/a |
| To-Do List | n/a | Yes | Yes | n/a |
| Voice Memo | n/a | Yes | Yes | n/a |
| Software | ||||
| Games | n/a | Yes | Yes | n/a |
| Java (J2ME) | n/a | Yes | Yes | n/a |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Headset Jack (2.5 mm) | n/a | - | Yes | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Asus PadFone X mini | Samsung SGH-X820 | Samsung SGH-X640 | BlackBerry Key2 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Asus PadFone X mini | Samsung SGH-X820 | Samsung SGH-X640 | BlackBerry Key2 |
