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Phone	Samsung DoubleTime	Samsung SCH-A220	BLU G90 Pro	Apple iPhone 4 (CDMA)	ZTE Speed
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.2" diag. 5 : 3	?	6.5" diag. 19.5 : 9	3.5" diag. 5 : 3	4.5" diag. 16 : 9
Display Resolution & Type	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	128 x 128 pixels LCD (STN)	1080 x 2340 pixels (~396 ppi) LCD (TFT/TFD)	640 x 960 pixels (~330 ppi) LCD (TFT/TFD)	540 x 960 pixels (~245 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	60 Hz	60 Hz	60 Hz
Battery	1,200 mAh	?	5,000 mAh	?	2,000 mAh
Processor	600 MHz Qualcomm	?	2 GHz MediaTek Helio G90T	?	1.2 GHz Qualcomm Snapdragon 410 MSM8916
RAM	?	?	4 GB	?	1 GB
Storage	? raw hardware	? raw hardware	128 GB	8 GB *	8 GB
Main Camera	3 megapixel	-	48 megapixel	5 megapixel	5 megapixel
Wide Camera	-	-	8 megapixel	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	-	4K UHD	720p HD	720p HD
Front Camera	-	-	32 megapixel	Yes	2 megapixel
Weight	5.22 oz (148g)	3.25 oz (92g)	7.58 oz (215g)	4.8 oz (136g)	4.8 oz (136g)
Dimensions	4.45" x 2.44" x 0.59" (113 x 62 x 15 mm)	2.87" x 2.09" x 0.94" (73 x 53 x 23.9 mm)	6.38" x 3.03" x 0.4" (162 x 77 x 10.2 mm)	4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm)	5.3" x 2.6" x 0.4" (135 x 66 x 10.2 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slab
Platform / OS	Android	(proprietary)	Android	iOS	Android
Network Bands	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 28 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	4G LTE: 25, 26, 41 CDMA: 800, 850, 1900
Data Technology	HSPA 7.2	1xRTT	LTE (Cat 6)	EVDO rA	LTE (Cat 3)
Features
Fingerprint Reader	-	-	Yes stand-alone	-	-
Flashlight	-	-	Yes	-	-
GPS / Location	n/a	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	n/a	-	n/a	n/a	n/a
Hearing Aid Compatible	Yes	-	-	Yes	Yes
Multiple Languages	n/a	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	-	Yes	-	Yes
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
Mobile Hotspot	n/a	-	n/a	n/a	n/a
USB	Yes Micro-USB	-	Yes USB Type C	Yes	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	-	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	n/a	n/a
Ringer ID	n/a	Yes	n/a	n/a	n/a
Voice Dialing	n/a	Yes	n/a	n/a	n/a
Customization
Custom Graphics	n/a	Yes	n/a	n/a	n/a
Custom Ringtones	n/a	Yes	n/a	n/a	n/a
Real-Music Ringers	n/a	-	n/a	n/a	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	n/a	n/a
Dual-SIM	-	-	Yes	-	-
WAP / Web Browser	n/a	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	-	-
Touch Screen	Yes	-	Yes	Yes	Yes
Memory
Memory Card Slot	Yes	-	Yes	-	Yes
Messaging
Email Client	n/a	-	n/a	n/a	n/a
Instant Messaging	n/a	-	n/a	n/a	n/a
MMS	n/a	-	n/a	n/a	n/a
Text Messaging Templates	n/a	Yes	n/a	n/a	n/a
Music
FM Radio	-	-	Yes	-	-
Headphone Jack (3.5mm)	Yes	-	Yes	Yes	Yes
Music Player	n/a	-	n/a	n/a	n/a
Photo & Video
TV Output	-	-	-	Yes	-
Video Calling	n/a	-	n/a	n/a	n/a
Power
Fast Charging	-	-	Yes	-	-
Wireless Charging	-	-	Yes	-	-
Productivity
Alarm	n/a	Yes	n/a	n/a	n/a
Calculator	n/a	Yes	n/a	n/a	n/a
Calendar	n/a	Yes	n/a	n/a	n/a
To-Do List	n/a	Yes	n/a	n/a	n/a
Voice Memo	n/a	Yes	n/a	n/a	n/a
Software
Games	n/a	-	n/a	n/a	n/a
Voice
HD Voice	-	-	-	-	Yes
Headset Jack (2.5 mm)	n/a	Yes	n/a	n/a	n/a
Speaker Phone	Yes	-	Yes	Yes	Yes
	Samsung DoubleTime	Samsung SCH-A220	BLU G90 Pro	Apple iPhone 4 (CDMA)	ZTE Speed
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung DoubleTime	Samsung SCH-A220	BLU G90 Pro	Apple iPhone 4 (CDMA)	ZTE Speed