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| Phone | Red Hydrogen One | Ericsson R520 | ZTE Z222 / Z223 | ZTE Blade Z Max | AT&T Vista |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size |
5.7" diag. 16 : 9 |
? |
2" diag. 4 : 3 |
6" diag. 16 : 9 |
5.5" diag. 18 : 9 |
| Display Resolution & Type |
1440 x 2560 pixels (~515 ppi) LCD (TFT/TFD) |
? |
176 x 220 pixels (~141 ppi) LCD (TFT/TFD) |
1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD) |
720 x 1440 pixels (~293 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? | 60 Hz | 60 Hz |
| Battery | 4,510 mAh | ? | 900 mAh | 4,080 mAh | 2,450 mAh |
| Processor | 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) | ? | QSC6270 | 1.4 GHz Qualcomm Snapdragon 435 (MSM8940) | 2 GHz MediaTek Helio A22 (MT6761V) |
| RAM | 6 GB | ? | 64 MB | 2 GB | 3 GB |
| Storage | 128 GB * | ? raw hardware | 128 MB | 32 GB | 32 GB |
| Main Camera | 12 megapixel | - | Yes | 16 megapixel | 8 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | 4K UHD | - | ? | 1080p HD | 1080p HD |
| Front Camera | 8 megapixel | - | - | 8 megapixel | 5 megapixel |
| Weight |
9.63 oz (273g) |
4.23 oz (120g) |
3.24 oz (92g) |
6.58 oz (186g) |
5.51 oz (156g) |
| Dimensions |
6.54" x 3.28" x 0.39" (166 x 83 x 10 mm) |
5.12" x 1.97" x 0.63" (130 x 50 x 16 mm) |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm) |
5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm) |
| Form Factor | Slab | Slab | Clamshell | Slab | Slab |
| Platform / OS | Android | (proprietary) | (proprietary) | Android | Android |
| Network Bands |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8, 19 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
WCDMA: 2, 5 GSM: 850, 1900 |
4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8 |
| Data Technology | LTE (Cat 12) | GPRS | HSDPA 3.6 | LTE (Cat 6) | LTE (Cat 4) |
| Features | |||||
| Fingerprint Reader |
Yes stand-alone |
- | - |
Yes stand-alone |
- |
| Flashlight | Yes | - | - | Yes | Yes |
| Accessibility | |||||
| Hearing Aid Compatible | Yes | - | Yes | Yes | Yes |
| Multiple Languages | n/a | Yes | Yes | n/a | n/a |
| TTY/TDD (Digital) | Yes | - | Yes | Yes | - |
| Alerts | |||||
| Extra Display | - | - | Yes | - | - |
| Ringer Profiles | - | Yes | Yes | - | - |
| Connectivity | |||||
| Bluetooth | Yes | Yes | Yes | Yes | Yes |
| Infrared (IR) | - | Yes | - | - | - |
| NFC | Yes | - | - | - | - |
| USB |
Yes USB Type C |
- |
Yes Micro-USB |
Yes USB Type C |
Yes USB Type C |
| Wi-Fi |
Yes 5 (802.11 a,ac,b,g,n) |
- | - |
Yes 4 (802.11 b,g,n) |
Yes |
| Contacts | |||||
| Picture ID | n/a | - | Yes | n/a | n/a |
| Ringer ID | n/a | - | Yes | n/a | n/a |
| Voice Dialing | n/a | Yes | - | n/a | n/a |
| Customization | |||||
| Custom Graphics | n/a | - | Yes | n/a | n/a |
| Custom Ringtones | n/a | Yes | Yes | n/a | n/a |
| Real-Music Ringers | n/a | - | Yes | n/a | n/a |
| Data & Network | |||||
| Data Tethering | n/a | Yes | - | n/a | n/a |
| WAP / Web Browser | n/a | Yes | Yes | n/a | n/a |
| Input | |||||
| Predictive Text Entry | n/a | Yes | Yes | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Touch Screen | Yes | - | - | Yes | Yes |
| Memory | |||||
| Memory Card Slot | Yes | - | - | Yes | Yes |
| Messaging | |||||
| Email Client | n/a | - | Yes | n/a | n/a |
| MMS | n/a | - | Yes | n/a | n/a |
| Text Messaging Templates | n/a | Yes | Yes | n/a | n/a |
| Music | |||||
| FM Radio | Yes | - | Yes * | Yes | - |
| Headphone Jack (3.5mm) | Yes | - | - | Yes | Yes |
| Stereo Speakers | Yes | - | - | - | - |
| Power | |||||
| Fast Charging | Yes | - | - | Yes | - |
| Productivity | |||||
| Alarm | n/a | Yes | Yes | n/a | n/a |
| Calculator | n/a | Yes | Yes | n/a | n/a |
| Calendar | n/a | Yes | Yes | n/a | n/a |
| Voice Memo | n/a | Yes | Yes | n/a | n/a |
| Software | |||||
| Games | n/a | Yes | Yes | n/a | n/a |
| Java (J2ME) | n/a | - | Yes | n/a | n/a |
| Voice | |||||
| HD Voice | Yes | - | - | Yes | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| Red Hydrogen One | Ericsson R520 | ZTE Z222 / Z223 | ZTE Blade Z Max | AT&T Vista | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Red Hydrogen One | Ericsson R520 | ZTE Z222 / Z223 | ZTE Blade Z Max | AT&T Vista |
