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| Phone | LG Tritan AX-840 / UX-840 | ZTE Z998 / Unico LTE | Microsoft Lumia 550 | TCL 40 XL / Jitterbug Smart 4 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
3" diag. 5 : 3 |
4.5" diag. 16 : 9 |
4.7" diag. 16 : 9 |
6.8" diag. 20 : 9 |
| Display Resolution & Type |
240 x 400 pixels (~155 ppi) LCD (TFT/TFD) |
540 x 960 pixels (~245 ppi) LCD (TFT/TFD) |
720 x 1280 pixels (~312 ppi) LCD (TFT/TFD) |
720 x 1600 pixels (~260 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | ? | 90 Hz |
| Battery | 950 mAh | 2,070 mAh | 2,100 mAh | 5,000 mAh |
| Processor | ? | 1.2 GHz Qualcomm Snapdragon 400 MSM8930 | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | 2.3 GHz MediaTek Helio G37 |
| RAM | ? | 1 GB | 1 GB | 4 GB |
| Storage | ? raw hardware | 4 GB | 8 GB | 128 GB |
| Main Camera | 3 megapixel | 5 megapixel | 5 megapixel | 50 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QVGA (320 x 240) | 720p HD | 720p HD | 1080p HD |
| Front Camera | - | 1 megapixel | 2 megapixel | 8 megapixel |
| Weight |
5.03 oz (143g) |
4.8 oz (136g) |
5.01 oz (142g) |
6.88 oz (195g) |
| Dimensions |
4.45" x 2.24" x 0.65" (113 x 57 x 16.5 mm) |
5.2" x 2.6" x 0.4" (132 x 66 x 10.2 mm) |
5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm) |
6.61" x 3.01" x 0.35" (168 x 76 x 8.8 mm) |
| Form Factor | Slide | Slab | Slab | Slab |
| Platform / OS | (proprietary) | Android | Windows | Android |
| Network Bands |
CDMA: 850, 1900 |
4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 13, 25, 26, 41, 66, 71 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
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| Data Technology | EVDO r0 | LTE (Cat 3) | LTE (Cat 4) | LTE (Cat 6) |
| Features | ||||
| Barometer | - | - | - | Yes |
| Fingerprint Reader | - | - | - | Yes |
| Flashlight | - | - | Yes | Yes |
| GPS / Location | Yes | n/a | n/a | n/a |
| Accessibility | ||||
| Adjustable Text Size | Yes | n/a | n/a | n/a |
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T4 (very tele-coil compatible) |
Yes M3, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | n/a | n/a | n/a |
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Mobile Hotspot | - | n/a | n/a | n/a |
| USB |
Yes Micro-USB |
Yes Micro-USB |
Yes Micro-USB |
Yes USB Type C |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | n/a |
| Ringer ID | Yes | 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 | ||||
| Data Tethering | - | n/a | n/a | n/a |
| WAP / Web Browser | Yes | n/a | n/a | n/a |
| Input | ||||
| Predictive Text Entry | - | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - | - |
| Touch Screen | Yes |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | Yes | n/a | n/a | n/a |
| Instant Messaging | Yes | n/a | n/a | n/a |
| MMS | Yes | n/a | n/a | n/a |
| Text Messaging Templates | Yes | n/a | n/a | n/a |
| Music | ||||
| FM Radio | - | - | Yes | - |
| Headphone Jack (3.5mm) | Yes | Yes | Yes | Yes |
| Music Player | Yes | n/a | n/a | n/a |
| Stereo Speakers | - | - | - | Yes |
| Power | ||||
| Fast Charging | - | - | - | 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 |
| Voice | ||||
| HD Voice | - | - | Yes | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| * Some versions only | ||||
| LG Tritan AX-840 / UX-840 | ZTE Z998 / Unico LTE | Microsoft Lumia 550 | TCL 40 XL / Jitterbug Smart 4 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | LG Tritan AX-840 / UX-840 | ZTE Z998 / Unico LTE | Microsoft Lumia 550 | TCL 40 XL / Jitterbug Smart 4 |
