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Specifications
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Phone	Samsung SGH-X640	Huawei Ascend II	Cal-Comp EZ	TCL 40 XL / Jitterbug Smart 4	BlackBerry 7750
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	3.5" diag. 5 : 3	?	6.8" diag. 20 : 9	?
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	128 x 128 pixels LCD (STN)	720 x 1600 pixels (~260 ppi) LCD (TFT/TFD)	240 x 240 pixels LCD (Color)
Display Refresh	?	60 Hz	?	90 Hz	?
Battery	800 mAh	1,400 mAh	800 mAh	5,000 mAh	?
Processor	?	600 MHz Qualcomm S1 MSM7627	?	2.3 GHz MediaTek Helio G37	?
RAM	?	?	?	4 GB	?
Storage	? raw hardware	? raw hardware	? raw hardware	128 GB	? raw hardware
Main Camera	Yes	5 megapixel	-	50 megapixel	-
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	VGA (640 x 480)	-	1080p HD	-
Front Camera	-	-	-	8 megapixel	-
Weight	3 oz (85g)	4.1 oz (116g)	2.47 oz (70g)	6.88 oz (195g)	5.01 oz (142g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.6" x 2.4" x 0.5" (117 x 61 x 12.7 mm)	4.04" x 1.71" x 0.63" (103 x 43 x 16 mm)	6.61" x 3.01" x 0.35" (168 x 76 x 8.8 mm)	4.76" x 3.03" x 0.71" (121 x 77 x 18 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	Android	(proprietary)	Android	BlackBerry OS
Network Bands	GSM: 900, 1800, 1900	CDMA: 850, 1700, 1900	CDMA: 850, 1900	4G LTE: 2, 4, 5, 12, 13, 25, 26, 41, 66, 71 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900
Data Technology	GPRS	EVDO rA	1xRTT	LTE (Cat 6)	1xRTT
Features
Barometer	-	-	-	Yes	-
Fingerprint Reader	-	-	-	Yes	-
Flashlight	-	-	-	Yes	-
GPS / Location	-	n/a	Yes	n/a	n/a
Accessibility
Hearing Aid Compatible	-	Yes M4, T3 (mostly tele-coil compatible)	-	Yes M3, T3 (mostly tele-coil compatible)	-
Multiple Languages	Yes	n/a	Yes	n/a	n/a
TTY/TDD (Digital)	-	Yes	-	Yes	Yes
Alerts
Ringer Profiles	-	-	-	-	Yes
Connectivity
Bluetooth	-	Yes	-	Yes	-
USB	-	Yes Micro-USB	Yes Mini-USB	Yes USB Type C	Yes
Wi-Fi	-	Yes 4 (802.11 b,g,n)	-	Yes 5 (802.11 a,ac,b,g,n)	-
Contacts
Picture ID	Yes	n/a	-	n/a	n/a
Ringer ID	Yes	n/a	-	n/a	n/a
Voice Dialing	-	n/a	-	n/a	n/a
Customization
Custom Graphics	Yes	n/a	-	n/a	n/a
Custom Ringtones	Yes	n/a	-	n/a	n/a
Real-Music Ringers	-	n/a	-	n/a	n/a
Data & Network
WAP / Web Browser	Yes	n/a	-	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	-	n/a	n/a
Side Keys	Yes	Yes	-	Yes	Yes
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	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
Instant Messaging	-	n/a	-	n/a	n/a
MMS	Yes	n/a	-	n/a	n/a
Text Messaging Templates	Yes	n/a	Yes	n/a	n/a
Music
Headphone Jack (3.5mm)	-	Yes	-	Yes	-
Music Player	-	n/a	-	n/a	n/a
Stereo Speakers	-	-	-	Yes	-
Power
Fast Charging	-	-	-	Yes	-
Productivity
Alarm	Yes	n/a	Yes	n/a	n/a
Calculator	Yes	n/a	Yes	n/a	n/a
Calendar	Yes	n/a	Yes	n/a	n/a
To-Do List	Yes	n/a	Yes	n/a	n/a
Voice Memo	Yes	n/a	Yes *	n/a	n/a
Software
Games	Yes	n/a	-	n/a	n/a
Java (J2ME)	Yes	n/a	-	n/a	n/a
Voice
HD Voice	-	-	-	Yes	-
Headset Jack (2.5 mm)	Yes	n/a	Yes	n/a	n/a
Speaker Phone	Yes	Yes	-	Yes	-
	* Some versions only
	Samsung SGH-X640	Huawei Ascend II	Cal-Comp EZ	TCL 40 XL / Jitterbug Smart 4	BlackBerry 7750
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Huawei Ascend II	Cal-Comp EZ	TCL 40 XL / Jitterbug Smart 4	BlackBerry 7750