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| Phone | LG AX-390 / UX-390 | BlackBerry 7750 | Samsung Galaxy Amp | Coolpad Legacy S / Legacy SR |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? |
4" diag. 5 : 3 |
5.5" diag. 18 : 9 |
| Display Resolution & Type |
128 x 128 pixels LCD (STN) |
240 x 240 pixels LCD (Color) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
720 x 1440 pixels (~295 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz | 60 Hz |
| Battery | 1,000 mAh | ? | 1,500 mAh | 2,450 mAh |
| Processor | ? | ? | 1 GHz STE U8420 | 2 GHz MediaTek Helio A22 (MT6761) |
| RAM | ? | ? | 1 GB | 2 GB |
| Storage | ? raw hardware | ? raw hardware | 4 GB | 16 GB |
| Main Camera | - | - | 5 megapixel | 8 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | 720p HD | 1080p HD |
| Front Camera | - | - | Yes | 5 megapixel |
| Weight |
3.74 oz (106g) |
5.01 oz (142g) |
4.41 oz (125g) |
5.6 oz (159g) |
| Dimensions |
3.82" x 1.98" x 0.94" (97 x 50 x 23.9 mm) |
4.76" x 3.03" x 0.71" (121 x 77 x 18 mm) |
4.84" x 2.48" x 0.43" (123 x 63 x 10.9 mm) |
6" x 2.8" x 0.37" (152 x 71 x 9.4 mm) |
| Form Factor | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | BlackBerry OS | Android | Android |
| Network Bands |
CDMA: 850, 1900 AMPS: 850 |
CDMA: 850, 1900 |
WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 13, 25, 26, 41, 66, 71 WCDMA: 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | 1xRTT | 1xRTT | HSPA 14.4 | LTE (Cat 4) |
| Features | ||||
| Flashlight | - | - | - | Yes |
| GPS / Location | Yes | n/a | n/a | n/a |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | n/a | n/a |
| Hearing Aid Compatible | Yes | - | Yes | Yes |
| Multiple Languages | Yes | n/a | n/a | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth | - | - |
Yes Classic Audio |
Yes Classic Audio |
| USB | - | Yes |
Yes Micro-USB |
Yes USB Type C |
| Wi-Fi | - | - |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | n/a |
| Ringer ID | - | n/a | n/a | n/a |
| Voice Dialing | Yes | n/a | n/a | n/a |
| Customization | ||||
| Custom Graphics | Yes | n/a | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a | n/a |
| Real-Music Ringers | Yes | n/a | n/a | n/a |
| Data & Network | ||||
| WAP / Web Browser | Yes | n/a | n/a | n/a |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | Yes | - | - |
| Touch Screen | - | - | 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 | Yes | n/a | n/a | n/a |
| Text Messaging Templates | - | n/a | n/a | n/a |
| Music | ||||
| FM Radio | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | - | Yes | Yes |
| Music Player | - | n/a | n/a | n/a |
| Photo & Video | ||||
| DLNA | - | - | Yes | - |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | n/a |
| Calculator | Yes | n/a | n/a | n/a |
| Calendar | Yes | n/a | n/a | n/a |
| To-Do List | - | n/a | n/a | n/a |
| Voice Memo | Yes | n/a | n/a | n/a |
| Software | ||||
| BREW | Yes | n/a | n/a | n/a |
| Games | Yes | n/a | n/a | n/a |
| Java (J2ME) | - | n/a | n/a | n/a |
| Voice | ||||
| Headset Jack (2.5 mm) | Yes | n/a | n/a | n/a |
| Push-To-Talk | Yes | - | - | - |
| Speaker Phone | Yes | - | Yes | Yes |
| LG AX-390 / UX-390 | BlackBerry 7750 | Samsung Galaxy Amp | Coolpad Legacy S / Legacy SR | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | LG AX-390 / UX-390 | BlackBerry 7750 | Samsung Galaxy Amp | Coolpad Legacy S / Legacy SR |







