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Phone	ZTE Z221	Samsung SGH-X640	ZTE Blade Z Max	Motorola V551 / V330 / V547 / V555 / V557	Motorola Defy (2010)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2" diag. 4 : 3	?	6" diag. 16 : 9	?	3.6" diag. 16 : 9
Display Resolution & Type	240 x 320 pixels (~200 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	480 x 854 pixels (~272 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	900 mAh	800 mAh	4,080 mAh	820 mAh	1,540 mAh
Processor	?	?	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)	?	800 MHz TI OMAP3610
RAM	?	?	2 GB	?	?
Storage	142 MB	? raw hardware	32 GB	? raw hardware	? raw hardware
Main Camera	Yes	Yes	16 megapixel	Yes	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	-	1080p HD	?	?
Front Camera	-	-	8 megapixel	-	-
Weight	3.24 oz (92g)	3 oz (85g)	6.58 oz (186g)	4.23 oz (120g)	4.16 oz (118g)
Dimensions	3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)	3.5" x 1.93" x 0.97" (89 x 49 x 24.6 mm)	4.21" x 2.32" x 0.53" (107 x 59 x 13.4 mm)
Form Factor	Clamshell	Clamshell	Slab	Clamshell	Slab
Platform / OS	(proprietary)	(proprietary)	Android	(proprietary)	Android
Network Bands	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900 *	WCDMA: 1, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	HSDPA 3.6	GPRS	LTE (Cat 6)	EDGE	HSPA 7.2
Features
Fingerprint Reader	-	-	Yes stand-alone	-	-
Flashlight	-	-	Yes	-	-
GPS / Location	Yes	-	n/a	-	n/a
Ruggedized	-	-	-	-	Yes
Accessibility
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M4, T3 (mostly tele-coil compatible)	-	-
Multiple Languages	Yes	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Extra Display	Yes	-	-	Yes	-
Ringer Profiles	Yes	-	-	Yes	-
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
USB	Yes	-	Yes USB Type C	Yes	Yes Micro-USB
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	-	Yes	n/a	Yes	n/a
Ringer ID	-	Yes	n/a	Yes	n/a
Voice Dialing	-	-	n/a	Yes	n/a
Customization
Custom Graphics	Yes	Yes	n/a	Yes	n/a
Custom Ringtones	Yes	Yes	n/a	Yes	n/a
Real-Music Ringers	Yes	-	n/a	Yes	n/a
Data & Network
Data Tethering	-	-	n/a	Yes	n/a
WAP / Web Browser	Yes	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	-	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	-	Yes	-	Yes
Messaging
Email Client	Yes	-	n/a	Yes	n/a
EMS / Picture Messaging	-	Yes	n/a	Yes	n/a
Instant Messaging	Yes	-	n/a	Yes	n/a
MMS	Yes	Yes	n/a	Yes	n/a
Text Messaging Templates	Yes	Yes	n/a	Yes	n/a
Music
FM Radio	-	-	Yes	-	Yes
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	-	-	n/a	-	n/a
Photo & Video
DLNA	-	-	-	-	Yes
Power
Fast Charging	-	-	Yes	-	-
Productivity
Alarm	Yes	Yes	n/a	Yes	n/a
Calculator	Yes	Yes	n/a	Yes	n/a
Calendar	Yes	Yes	n/a	Yes	n/a
To-Do List	-	Yes	n/a	-	n/a
Voice Memo	Yes	Yes	n/a	Yes	n/a
Software
Games	Yes	Yes	n/a	Yes	n/a
Java (J2ME)	Yes	Yes	n/a	Yes	n/a
Voice
HD Voice	-	-	Yes	-	-
Headset Jack (2.5 mm)	-	Yes	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	ZTE Z221	Samsung SGH-X640	ZTE Blade Z Max	Motorola V551 / V330 / V547 / V555 / V557	Motorola Defy (2010)
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE Z221	Samsung SGH-X640	ZTE Blade Z Max	Motorola V551 / V330 / V547 / V555 / V557	Motorola Defy (2010)