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| Phone | Casio G'zOne Boulder | ZTE Z222 / Z223 | ZTE Solar | ZTE Flash | 
| Current U.S. Carriers | (none) | (none) | (none) | (none) | 
| Global Availability | Released | Released | Released | Released | 
| Specifications | ||||
|---|---|---|---|---|
| Display Size | 
			2" diag. 4 : 3  | 
		
		
			2" diag. 4 : 3  | 
		
		
			4.5" diag. 16 : 9  | 
		
		
			4.5" diag. 16 : 9  | 
	
| Display Resolution & Type | 
			240 x 320 pixels (~200 ppi) LCD (TFT/TFD)  | 
		
		
			176 x 220 pixels (~141 ppi) LCD (TFT/TFD)  | 
		
		
			480 x 854 pixels (~218 ppi) LCD (TFT/TFD)  | 
		
		
			720 x 1280 pixels (~326 ppi) LCD (TFT/TFD)  | 
	
| Display Refresh | ? | ? | 60 Hz | 60 Hz | 
| Battery | 810 mAh | 900 mAh | 2,070 mAh | 1,780 mAh | 
| Processor | ? | QSC6270 | 1.2 GHz Qualcomm Snapdragon 200 MSM8625 | 1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960 | 
| RAM | ? | 64 MB | 768 MB | 1 GB | 
| Storage | ? raw hardware | 128 MB | 4 GB | 8 GB | 
| Main Camera | 1 megapixel | Yes | 5 megapixel | 12 megapixel | 
| Wide Camera | - | - | - | - | 
| Tele Camera | - | - | - | - | 
| Video Capture | ? | ? | WVGA / 480p | 1080p HD | 
| Front Camera | - | - | - | 1 megapixel | 
| Weight | 
			4.9 oz (139g)  | 
		
		
			3.24 oz (92g)  | 
		
		
			5.54 oz (157g)  | 
		
		
			5.2 oz (147g)  | 
	
| Dimensions | 
			3.9" x 2" x 0.9" (99 x 51 x 22.9 mm)  | 
		
		
			3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm)  | 
		
		
			5.24" x 2.6" x 0.39" (133 x 66 x 9.9 mm)  | 
		
		
			5.27" x 2.56" x 0.38" (134 x 65 x 9.7 mm)  | 
	
| Form Factor | Clamshell | Clamshell | Slab | Slab | 
| Platform / OS | (proprietary) | (proprietary) | Android | Android | 
| Network Bands | 
			 CDMA: 850, 1900  | 
		
		
			 WCDMA: 2, 5 GSM: 850, 1900  | 
		
		
			 WCDMA: 2, 5 GSM: 850, 1900  | 
		
		
			 4G LTE: 25 CDMA: 800, 850, 1900  | 
	
| Data Technology | EVDO rA | HSDPA 3.6 | HSPA 7.2 | LTE (Cat 3) | 
| Features | ||||
| Flashlight | Yes | - | - | - | 
| GPS / Location | Yes | - | n/a | n/a | 
| Ruggedized | Yes | - | - | - | 
| Water-Resistant | Yes | - | - | - | 
| Accessibility | ||||
| Adjustable Text Size | - | - | n/a | n/a | 
| Hearing Aid Compatible | Yes | Yes | Yes | Yes | 
| Multiple Languages | Yes | Yes | n/a | n/a | 
| TTY/TDD (Digital) | Yes | Yes | Yes | Yes | 
| Alerts | ||||
| Extra Display | Yes | Yes | - | - | 
| Ringer Profiles | - | Yes | - | - | 
| Connectivity | ||||
| Bluetooth | 
			Yes Classic Audio  | 
		
		
			Yes Classic Audio  | 
		
		
			Yes Classic Audio  | 
		
		
			Yes Classic Audio  | 
	
| Mobile Hotspot | - | - | n/a | n/a | 
| NFC | - | - | - | Yes | 
| USB | Yes | 
			Yes Micro-USB  | 
		
		
			Yes Micro-USB  | 
		
		
			Yes Micro-USB  | 
	
| Wi-Fi | - | - | 
			Yes 4 (802.11 b,g,n)  | 
		
		
			Yes 4 (802.11 b,g,n)  | 
	
| Contacts | ||||
| Picture ID | Yes | Yes | n/a | n/a | 
| Ringer ID | Yes | Yes | n/a | n/a | 
| Voice Dialing | Yes | - | n/a | n/a | 
| Customization | ||||
| Changeable Body Plates | Yes | - | - | - | 
| Custom Graphics | Yes | Yes | n/a | n/a | 
| Custom Ringtones | Yes | Yes | n/a | n/a | 
| Real-Music Ringers | - | Yes | n/a | n/a | 
| Data & Network | ||||
| Data Tethering | Yes | - | n/a | n/a | 
| WAP / Web Browser | Yes | Yes | n/a | n/a | 
| Input | ||||
| Predictive Text Entry | Yes | Yes | n/a | n/a | 
| Side Keys | Yes | Yes | Yes | Yes | 
| Touch Screen | - | - | Yes | Yes | 
| Memory | ||||
| Memory Card Slot | Yes | - | Yes | Yes | 
| Messaging | ||||
| Email Client | - | Yes | n/a | n/a | 
| EMS / Picture Messaging | Yes | - | n/a | n/a | 
| Instant Messaging | - | - | n/a | n/a | 
| MMS | Yes | Yes | n/a | n/a | 
| Text Messaging Templates | Yes | Yes | n/a | n/a | 
| Music | ||||
| FM Radio | - | Yes * | - | - | 
| Headphone Jack (3.5mm) | - | - | Yes | Yes | 
| Music Player | Yes | - | n/a | n/a | 
| Productivity | ||||
| Alarm | Yes | Yes | n/a | n/a | 
| Calculator | Yes | Yes | n/a | n/a | 
| Calendar | Yes | Yes | n/a | n/a | 
| Voice Memo | Yes | Yes | n/a | n/a | 
| Software | ||||
| BREW | Yes | - | n/a | n/a | 
| Games | Yes | Yes | n/a | n/a | 
| Java (J2ME) | - | Yes | n/a | n/a | 
| Voice | ||||
| HD Voice | - | - | - | Yes | 
| Push-To-Talk | Yes | - | - | - | 
| Speaker Phone | Yes | Yes | Yes | Yes | 
| * Some versions only | ||||
| Casio G'zOne Boulder | ZTE Z222 / Z223 | ZTE Solar | ZTE Flash | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Casio G'zOne Boulder | ZTE Z222 / Z223 | ZTE Solar | ZTE Flash | 










