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Phone	Samsung SGH-X640	Samsung SCH-U740 Alias	ZTE Blade Max 3 / Max Blue	BlackBerry 7750	TCL 40 XL / Jitterbug Smart 4
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	6" diag. 16 : 9	?	6.8" diag. 20 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	240 x 240 pixels LCD (Color)	720 x 1600 pixels (~260 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	90 Hz
Battery	800 mAh	?	4,000 mAh	?	5,000 mAh
Processor	?	?	2 GHz Qualcomm Snapdragon 625 (MSM8953)	?	2.3 GHz MediaTek Helio G37
RAM	?	?	2 GB	?	4 GB
Storage	? raw hardware	? raw hardware	16 GB	? raw hardware	128 GB
Main Camera	Yes	1 megapixel	13 megapixel	-	50 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	?	4K UHD	-	1080p HD
Front Camera	-	-	5 megapixel	-	8 megapixel
Weight	3 oz (85g)	3.56 oz (101g)	6.34 oz (180g)	5.01 oz (142g)	6.88 oz (195g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	3.84" x 2.04" x 0.63" (98 x 52 x 16 mm)	6.49" x 3.3" x 0.35" (165 x 84 x 8.9 mm)	4.76" x 3.03" x 0.71" (121 x 77 x 18 mm)	6.61" x 3.01" x 0.35" (168 x 76 x 8.8 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Android	BlackBerry OS	Android
Network Bands	GSM: 900, 1800, 1900	CDMA: 850, 1900	4G LTE: 2, 4, 5, 12, 13, 25 WCDMA: 2, 4, 5 CDMA: 850, 1900 GSM: 850, 900, 1800, 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
Data Technology	GPRS	EVDO r0	LTE (Cat 4)	1xRTT	LTE (Cat 6)
Features
Barometer	-	-	-	-	Yes
Fingerprint Reader	-	-	Yes stand-alone	-	Yes
Flashlight	-	-	Yes	-	Yes
GPS / Location	-	Yes	n/a	n/a	n/a
Accessibility
Hearing Aid Compatible	-	Yes M4 (very compatible)	Yes M4, T3 (mostly tele-coil compatible)	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	-	-
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	-	Yes	Yes	-	Yes
USB	-	Yes	Yes USB Type C	Yes	Yes USB Type C
Wi-Fi	-	-	Yes 5 (802.11 ac,b,g,n)	-	Yes 5 (802.11 a,ac,b,g,n)
Contacts
Picture ID	Yes	Yes	n/a	n/a	n/a
Ringer ID	Yes	Yes	n/a	n/a	n/a
Voice Dialing	-	Yes	n/a	n/a	n/a
Customization
Custom Graphics	Yes	Yes	n/a	n/a	n/a
Custom Ringtones	Yes	Yes	n/a	n/a	n/a
Data & Network
Data Tethering	-	Yes	n/a	n/a	n/a
WAP / Web Browser	Yes	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	-	Yes	-
Touch Screen	-	-	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	-	Yes
Messaging
Email Client	-	Yes	n/a	n/a	n/a
EMS / Picture Messaging	Yes	-	n/a	n/a	n/a
Instant Messaging	-	Yes	n/a	n/a	n/a
MMS	Yes	Yes	n/a	n/a	n/a
Text Messaging Templates	Yes	Yes	n/a	n/a	n/a
Music
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	-	Yes	n/a	n/a	n/a
Stereo Speakers	-	-	-	-	Yes
Power
Fast Charging	-	-	Yes	-	Yes
Productivity
Alarm	Yes	Yes	n/a	n/a	n/a
Calculator	Yes	Yes	n/a	n/a	n/a
Calendar	Yes	Yes	n/a	n/a	n/a
To-Do List	Yes	-	n/a	n/a	n/a
Voice Memo	Yes	Yes	n/a	n/a	n/a
Software
BREW	-	Yes	n/a	n/a	n/a
Games	Yes	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	n/a	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	Samsung SGH-X640	Samsung SCH-U740 Alias	ZTE Blade Max 3 / Max Blue	BlackBerry 7750	TCL 40 XL / Jitterbug Smart 4
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Samsung SCH-U740 Alias	ZTE Blade Max 3 / Max Blue	BlackBerry 7750	TCL 40 XL / Jitterbug Smart 4