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| Phone | ZTE Z221 | Asus ROG Phone II | Nokia Lumia 900 | ZTE Aspect |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2" diag. 4 : 3 |
6.6" diag. 19.5 : 9 |
4.3" diag. 5 : 3 |
2.4" diag. 4 : 3 |
| Display Resolution & Type |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
1080 x 2340 pixels (~391 ppi) AMOLED |
480 x 800 pixels (~217 ppi) AMOLED |
320 x 240 pixels (~167 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 120 Hz | ? | ? |
| Battery | 900 mAh | 6,000 mAh | 1,830 mAh | 1,000 mAh |
| Processor | ? | 3 GHz Qualcomm Snapdragon 855 Plus | 1.4 GHz Qualcomm S2 APQ8055 | 230 MHz Qualcomm QSC6270 |
| RAM | ? | 12 GB | 512 MB | 128 MB |
| Storage | 142 MB | 512 GB | 16 GB | 256 MB |
| Main Camera | Yes | 48 megapixel | 8 megapixel | 2 megapixel |
| Wide Camera | - | 13 megapixel | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QCIF (176 x 144) | 4K UHD | 720p HD | QVGA (320 x 240) |
| Front Camera | - | 24 megapixel | 1 megapixel | - |
| Weight |
3.24 oz (92g) |
8.47 oz (240g) |
5.6 oz (159g) |
3.7 oz (105g) |
| Dimensions |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
6.73" x 3.06" x 0.37" (171 x 78 x 9.5 mm) |
5.03" x 2.7" x 0.45" (128 x 69 x 11.4 mm) |
4.55" x 2.4" x 0.45" (116 x 61 x 11.4 mm) |
| Form Factor | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | Android | Windows | (proprietary) |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 26, 28, 29, 32, 34, 38, 39, 40, 41, 46, 66 WCDMA: 1, 2, 3, 4, 5, 8, 19 GSM: 850, 900, 1800, 1900 |
WCDMA: 2, 4 GSM: 850, 900, 1800, 1900 |
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| Data Technology | HSDPA 3.6 | LTE (Cat 20) | LTE (Cat 3) | WCDMA (UMTS) |
| Features | ||||
| Fingerprint Reader | - |
Yes in-display (optical) |
- | - |
| Flashlight | - | Yes | - | - |
| GPS / Location | Yes | n/a | n/a | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | Yes | Yes | Yes | Yes |
| Multiple Languages | Yes | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | Yes | - | - | Yes |
| Connectivity | ||||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes |
Yes Classic Audio |
| Mobile Hotspot | - | n/a | n/a | - |
| NFC | - | Yes | - | - |
| USB | Yes |
Yes USB Type C |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes | - |
| Contacts | ||||
| Picture ID | - | n/a | n/a | Yes |
| Ringer ID | - | n/a | n/a | Yes |
| Voice Dialing | - | n/a | n/a | - |
| Customization | ||||
| Custom Graphics | Yes | n/a | n/a | Yes |
| Custom Ringtones | Yes | n/a | n/a | Yes |
| Real-Music Ringers | Yes | n/a | n/a | Yes |
| Data & Network | ||||
| Dual-SIM | - | Yes | - | - |
| WAP / Web Browser | Yes | n/a | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | - | - | - | Yes |
| Touch Screen | - | Yes | Yes | - |
| Memory | ||||
| Memory Card Slot | - | - | - | Yes |
| Messaging | ||||
| Email Client | Yes | n/a | n/a | Yes |
| Instant Messaging | Yes | n/a | n/a | - |
| MMS | Yes | n/a | n/a | Yes |
| Text Messaging Templates | Yes | n/a | n/a | Yes |
| Music | ||||
| FM Radio | - | Yes | Yes | - |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes |
| Music Player | - | n/a | n/a | Yes |
| Stereo Speakers | - | Yes | - | - |
| Photo & Video | ||||
| TV Output | - | Yes | - | - |
| Power | ||||
| Fast Charging | - | Yes | - | - |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | Yes |
| Calculator | Yes | n/a | n/a | Yes |
| Calendar | Yes | n/a | n/a | Yes |
| Voice Memo | Yes | n/a | n/a | Yes |
| Software | ||||
| Games | Yes | n/a | n/a | Yes |
| Java (J2ME) | Yes | n/a | n/a | Yes |
| Voice | ||||
| Speaker Phone | Yes | Yes | Yes | Yes |
| ZTE Z221 | Asus ROG Phone II | Nokia Lumia 900 | ZTE Aspect | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z221 | Asus ROG Phone II | Nokia Lumia 900 | ZTE Aspect |
