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Phone	Samsung Knack U310	Nokia Lumia 810	Apple iPhone 4 (GSM)	Motorola i830 / i833 / i835 / i836	TCL A30 / A3
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.2" diag. 4 : 3	4.3" diag. 5 : 3	3.5" diag. 5 : 3	?	5.5" diag. 18 : 9
Display Resolution & Type	176 x 220 pixels (~128 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) AMOLED	640 x 960 pixels (~330 ppi) LCD (TFT/TFD)	130 x 130 pixels LCD (TFT/TFD)	720 x 1440 pixels (~293 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	?
Battery	1,000 mAh	1,800 mAh	?	?	3,000 mAh
Processor	?	1.5 GHz Qualcomm Snapdragon	Apple A4	?	2 GHz MediaTek Helio P22 (MT6762V)
RAM	?	1 GB	?	?	3 GB
Storage	? raw hardware	8 GB	32 GB *	? raw hardware	32 GB
Main Camera	-	8 megapixel	5 megapixel	-	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	720p HD	-	1080p HD
Front Camera	-	1 megapixel	Yes	-	5 megapixel
Weight	3.63 oz (103g)	5.11 oz (145g)	4.8 oz (136g)	3.94 oz (112g)	6.03 oz (171g)
Dimensions	3.78" x 2.01" x 0.74" (96 x 51 x 18.8 mm)	5" x 2.69" x 0.44" (127 x 68 x 11.2 mm)	4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm)	3.35" x 1.77" x 0.79" (85 x 45 x 20.1 mm)	5.74" x 2.8" x 0.39" (146 x 71 x 9.9 mm)
Form Factor	Clamshell	Slab	Slab	Clamshell	Slab
Platform / OS	(proprietary)	Windows	iOS	(proprietary)	Android
Network Bands	CDMA: 850, 1900	WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900	iDEN: 800	4G LTE: 2, 4, 5, 12, 13, 25, 26, 41, 66, 71 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	-	HSPA+ 42	HSPA 7.2	-	LTE (Cat 4)
Features
Flashlight	-	-	-	-	Yes
GPS / Location	Yes	n/a	n/a	Yes	n/a
Water-Resistant	-	-	-	-	Yes IPX2 (drip)
Accessibility
Adjustable Text Size	Yes	n/a	n/a	-	n/a
Hearing Aid Compatible	Yes M4, T4 (very tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M3 (mostly compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	Yes	-	-	Yes	-
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	-	Yes	Yes	-	Yes
Mobile Hotspot	-	n/a	n/a	-	n/a
NFC	-	Yes	-	-	-
USB	-	Yes Micro-USB	Yes	Yes	Yes Micro-USB
Wi-Fi	-	Yes 4 (802.11 a,b,g,n)	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	-	n/a	n/a	Yes	n/a
Ringer ID	-	n/a	n/a	Yes	n/a
Voice Dialing	Yes	n/a	n/a	Yes	n/a
Customization
Custom Graphics	-	n/a	n/a	Yes	n/a
Custom Ringtones	-	n/a	n/a	Yes	n/a
Real-Music Ringers	-	n/a	n/a	-	n/a
Data & Network
Data Tethering	-	n/a	n/a	Yes	n/a
WAP / Web Browser	-	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	-	-	Yes
Messaging
Email Client	-	n/a	n/a	-	n/a
EMS / Picture Messaging	Yes	n/a	n/a	-	n/a
MMS	-	n/a	n/a	Yes	n/a
Music
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	-	n/a	n/a	-	n/a
Photo & Video
TV Output	-	-	Yes	-	-
Power
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	Yes	n/a
Voice Memo	-	n/a	n/a	Yes	n/a
Software
Games	-	n/a	n/a	Yes	n/a
Java (J2ME)	-	n/a	n/a	Yes	n/a
Voice
HD Voice	-	-	-	-	Yes
Headset Jack (2.5 mm)	Yes	n/a	n/a	Yes	n/a
Push-To-Talk	-	-	-	Yes	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung Knack U310	Nokia Lumia 810	Apple iPhone 4 (GSM)	Motorola i830 / i833 / i835 / i836	TCL A30 / A3
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung Knack U310	Nokia Lumia 810	Apple iPhone 4 (GSM)	Motorola i830 / i833 / i835 / i836	TCL A30 / A3