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| Phone | ZTE Z221 | Apple iPhone 4 (CDMA) | Asus Smartphone for Snapdragon Insiders | Kyocera DuraForce Ultra 5G |
| Current U.S. Carriers | (none) | (none) | (none) | Verizon |
| Global Availability | Released | Released | Not yet released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size |
2" diag. 4 : 3 |
3.5" diag. 5 : 3 |
6.8" diag. 20.5 : 9 |
5.5" diag. 18 : 9 |
| Display Resolution & Type |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
640 x 960 pixels (~330 ppi) LCD (TFT/TFD) |
1080 x 2448 pixels (~395 ppi) AMOLED |
1080 x 2160 pixels (~443 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 144 Hz | 60 Hz |
| Battery | 900 mAh | ? | 4,000 mAh | 4,500 mAh |
| Processor | ? | ? | 2.8 GHz Qualcomm Snapdragon 888 | 2.4 GHz Qualcomm Snapdragon 765G |
| RAM | ? | ? | 16 GB | 6 GB |
| Storage | 142 MB | 8 GB * | 512 GB | 128 GB |
| Main Camera | Yes | 5 megapixel | 64 megapixel | 23 megapixel |
| Wide Camera | - | - | 12 megapixel | 16 megapixel |
| Tele Camera | - | - | 8 megapixel | - |
| Video Capture | QCIF (176 x 144) | 720p HD | 8K | 4K UHD |
| Front Camera | - | Yes | 24 megapixel | 8 megapixel |
| Weight |
3.24 oz (92g) |
4.8 oz (136g) |
7.41 oz (210g) |
9.81 oz (278g) |
| Dimensions |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm) |
6.82" x 3.04" x 0.38" (173 x 77 x 9.6 mm) |
6.5" x 2.95" x 0.63" (165 x 75 x 16 mm) |
| Form Factor | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | iOS | Android | Android |
| Network Bands |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
5G: 1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 30, 38, 40, 41, 46, 48, 66, 71, 77-C, 78, 257, 258, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 46, 48, 66, 71 WCDMA: 1, 2, 3, 4, 5, 8, 19 GSM: 850, 900, 1800, 1900 |
5G: 2, 5, 66, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 48, 66 WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 |
| Data Technology | HSDPA 3.6 | EVDO rA | NR (5G) | NR (5G) |
| Features | ||||
| Barometer | - | - | - | Yes |
| Fingerprint Reader | - | - |
Yes stand-alone |
Yes stand-alone |
| Flashlight | - | - | Yes | Yes |
| GPS / Location | Yes | n/a | n/a | n/a |
| Ruggedized | - | - | - | Yes |
| Water-Resistant | - | - | - |
Yes IPX8 (SCUBA) |
| Accessibility | ||||
| Adjustable Text Size | - | n/a | n/a | n/a |
| Hearing Aid Compatible | Yes | Yes | Yes | Yes |
| Multiple Languages | Yes | n/a | n/a | n/a |
| TTY/TDD (Digital) | Yes | - | - | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Ringer Profiles | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Mobile Hotspot | - | n/a | n/a | n/a |
| NFC | - | - | Yes | Yes |
| USB | Yes | Yes |
Yes USB Type C |
Yes USB Type C |
| UWB | - | - | - | Yes |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 6E (802.11 a,ac,ax,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | - | n/a | n/a | n/a |
| Ringer ID | - | n/a | n/a | n/a |
| Voice Dialing | - | 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 | ||||
| Dual-SIM | - | - | Yes | - |
| 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 |
| Touch Screen | - | Yes | Yes | Yes |
| Memory | ||||
| Memory Card Slot | - | - | - | 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 | ||||
| Headphone Jack (3.5mm) | - | Yes | - | Yes |
| Music Player | - | n/a | n/a | n/a |
| Stereo Speakers | - | - | Yes | - |
| Photo & Video | ||||
| TV Output | - | Yes | - | - |
| Video Calling | - | n/a | n/a | n/a |
| Power | ||||
| Fast Charging | - | - | Yes | Yes |
| Wireless 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 |
| Voice Memo | Yes | n/a | n/a | n/a |
| Software | ||||
| Games | Yes | n/a | n/a | n/a |
| Java (J2ME) | Yes | n/a | n/a | n/a |
| Voice | ||||
| HD Voice | - | - | Yes | Yes |
| Push-To-Talk | - | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| ZTE Z221 | Apple iPhone 4 (CDMA) | Asus Smartphone for Snapdragon Insiders | Kyocera DuraForce Ultra 5G | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | ZTE Z221 | Apple iPhone 4 (CDMA) | Asus Smartphone for Snapdragon Insiders | Kyocera DuraForce Ultra 5G |
