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Specifications
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Phone	Samsung Captivate Glide	ZTE Z431 / Altair	Apple iPhone 4 (GSM)	HTC G2	Motorola i50sx
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	2.4" diag. 4 : 3	3.5" diag. 5 : 3	3.7" diag. 5 : 3	?
Display Resolution & Type	480 x 800 pixels (~233 ppi) AMOLED	320 x 240 pixels (~167 ppi) LCD (TFT/TFD)	640 x 960 pixels (~330 ppi) LCD (TFT/TFD)	480 x 800 pixels (~252 ppi) LCD (TFT/TFD)	? LCD (Grayscale)
Display Refresh	60 Hz	?	60 Hz	60 Hz	?
Battery	1,650 mAh	1,000 mAh	?	1,300 mAh	750 mAh
Processor	1 GHz Nvidia Tegra 2 AP20H	?	Apple A4	800 MHz Qualcomm S2 MSM7230	?
RAM	1 GB	?	?	?	?
Storage	8 GB	? raw hardware	32 GB *	? raw hardware	? raw hardware
Main Camera	8 megapixel	2 megapixel	5 megapixel	5 megapixel	-
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	QVGA (320 x 240)	720p HD	720p HD	-
Front Camera	1 megapixel	-	Yes	-	-
Weight	5.2 oz (147g)	3.52 oz (100g)	4.8 oz (136g)	6.5 oz (184g)	5.1 oz (145g)
Dimensions	4.88" x 2.55" x 0.51" (124 x 65 x 13 mm)	4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm)	4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm)	4.68" x 2.37" x 0.55" (119 x 60 x 14 mm)	5.24" x 2.05" x 1.18" (133 x 52 x 30 mm)
Form Factor	Slide	Slab	Slab	Slab	Slab
Platform / OS	Android	(proprietary)	iOS	Android	(proprietary)
Network Bands	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900	iDEN: 800
Data Technology	HSPA+ 21	?	HSPA 7.2	HSPA 14.4	-
Features
GPS / Location	n/a	Yes	n/a	n/a	-
Accessibility
Adjustable Text Size	n/a	-	n/a	n/a	-
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M3 (mostly compatible)	-
Multiple Languages	n/a	Yes	n/a	n/a	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	-	Yes
Alerts
Ringer Profiles	-	Yes	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	-
Mobile Hotspot	n/a	-	n/a	n/a	-
USB	Yes Micro-USB	Yes Micro-USB	Yes	Yes	-
Wi-Fi	Yes	-	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	n/a	Yes	n/a	n/a	-
Ringer ID	n/a	Yes	n/a	n/a	-
Voice Dialing	n/a	-	n/a	n/a	Yes
Customization
Changeable Body Plates	-	-	-	-	Yes
Custom Graphics	n/a	Yes	n/a	n/a	-
Custom Ringtones	n/a	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	Yes
WAP / Web Browser	n/a	Yes	n/a	n/a	Yes
Input
Predictive Text Entry	n/a	Yes	n/a	n/a	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	Yes	-	Yes	-
Touch Screen	Yes Capacitive	-	Yes Capacitive	Yes Capacitive	-
Memory
Memory Card Slot	Yes	Yes	-	Yes	-
Messaging
Email Client	n/a	Yes	n/a	n/a	-
Instant Messaging	n/a	-	n/a	n/a	-
MMS	n/a	Yes	n/a	n/a	-
Text Messaging Templates	n/a	Yes	n/a	n/a	-
Music
Headphone Jack (3.5mm)	Yes	Yes	Yes	Yes	-
Music Player	n/a	Yes	n/a	n/a	-
Photo & Video
DLNA	Yes	-	-	-	-
TV Output	Yes	-	Yes	-	-
Productivity
Alarm	n/a	Yes	n/a	n/a	Yes
Calculator	n/a	Yes	n/a	n/a	-
Calendar	n/a	Yes	n/a	n/a	Yes
Voice Memo	n/a	Yes	n/a	n/a	-
Software
BREW	n/a	Yes	n/a	n/a	-
Games	n/a	Yes	n/a	n/a	-
Voice
Headset Jack (2.5 mm)	n/a	-	n/a	n/a	Yes
Push-To-Talk	-	-	-	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	-
	* Some versions only
	Samsung Captivate Glide	ZTE Z431 / Altair	Apple iPhone 4 (GSM)	HTC G2	Motorola i50sx
	X >	< X >	< X >	< X >	< X

NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Samsung Captivate Glide	ZTE Z431 / Altair	Apple iPhone 4 (GSM)	HTC G2	Motorola i50sx