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| Phone | ZTE Z221 | LG K3 | Ericsson T39 | Nubia Red Magic 3 / 3S |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2" diag. 4 : 3 |
4.5" diag. 16 : 9 |
? |
6.7" diag. 19.5 : 9 |
| Display Resolution & Type |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
480 x 854 pixels (~218 ppi) LCD (TFT/TFD) |
? LCD (Grayscale) |
1080 x 2340 pixels (~388 ppi) AMOLED |
| Display Refresh | ? | 60 Hz | ? | 90 Hz |
| Battery | 900 mAh | 1,940 mAh | ? | 5,000 mAh |
| Processor | ? | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | ? | Qualcomm Snapdragon 855+ |
| RAM | ? | 1 GB | ? | 8 GB * |
| Storage | 142 MB | 8 GB | ? raw hardware | 128 GB * |
| Main Camera | Yes | 5 megapixel | - | 48 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QCIF (176 x 144) | 720p HD | - | 4K UHD |
| Front Camera | - | Yes | - | 16 megapixel |
| Weight |
3.24 oz (92g) |
4.6 oz (130g) |
3.03 oz (86g) |
7.58 oz (215g) |
| Dimensions |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
5.24" x 2.67" x 0.37" (133 x 68 x 9.4 mm) |
3.78" x 1.97" x 0.71" (96 x 50 x 18 mm) |
6.76" x 3.09" x 0.38" (172 x 79 x 9.7 mm) |
| Form Factor | Clamshell | Slab | Flip | Slab |
| Platform / OS | (proprietary) | Android | (proprietary) | Android |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 25, 26, 41 WCDMA: 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 30, 34, 38, 39, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8, 19 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
| Data Technology | HSDPA 3.6 | LTE (Cat 4) | GPRS | LTE (Cat 9) |
| Features | ||||
| Fingerprint Reader | - | - | - |
Yes stand-alone |
| Flashlight | - | Yes | - | Yes |
| GPS / Location | Yes | n/a | - | n/a |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | - | n/a |
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
- | - |
| Multiple Languages | Yes | n/a | Yes | n/a |
| TTY/TDD (Digital) | Yes | Yes | - | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | Yes | - | Yes | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Infrared (IR) | - | - | Yes | - |
| Mobile Hotspot | - | n/a | - | n/a |
| USB | Yes |
Yes Micro-USB |
- |
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 | - | n/a |
| Ringer ID | - | n/a | - | n/a |
| Voice Dialing | - | n/a | Yes | n/a |
| Customization | ||||
| Custom Graphics | Yes | n/a | Yes | n/a |
| Custom Ringtones | Yes | n/a | Yes | n/a |
| Real-Music Ringers | Yes | n/a | - | n/a |
| Data & Network | ||||
| Data Tethering | - | n/a | Yes | n/a |
| Dual-SIM | - | - | - | Yes |
| WAP / Web Browser | Yes | n/a | Yes | n/a |
| Input | ||||
| Predictive Text Entry | Yes | n/a | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | - | Yes |
| Touch Screen | - |
Yes Capacitive |
- |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | - | Yes | - | - |
| Messaging | ||||
| Email Client | Yes | n/a | - | n/a |
| Instant Messaging | Yes | n/a | - | n/a |
| MMS | Yes | n/a | - | n/a |
| Text Messaging Templates | Yes | n/a | Yes | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | - | Yes |
| Music Player | - | n/a | - | n/a |
| Stereo Speakers | - | - | - | Yes |
| Photo & Video | ||||
| TV Output | - | - | - | Yes |
| Power | ||||
| Fast Charging | - | - | - | Yes |
| Productivity | ||||
| Alarm | Yes | n/a | Yes | n/a |
| Calculator | Yes | n/a | Yes | n/a |
| Calendar | Yes | n/a | Yes | n/a |
| Voice Memo | Yes | n/a | Yes | n/a |
| Software | ||||
| Games | Yes | n/a | Yes | n/a |
| Java (J2ME) | Yes | n/a | - | n/a |
| Voice | ||||
| HD Voice | - | Yes | - | Yes |
| Speaker Phone | Yes | Yes | - | Yes |
| ZTE Z221 | LG K3 | Ericsson T39 | Nubia Red Magic 3 / 3S | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z221 | LG K3 | Ericsson T39 | Nubia Red Magic 3 / 3S |
