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Phone	Samsung SGH-X640	AT&T Vista	BlackBerry Pearl 3G 9100 / 9105	HTC SDA (USA) / SP5m (Tornado)
Current U.S. Carriers	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released
Display Size	?	5.5" diag. 18 : 9	2.3" diag. 1 : 1	2.2" diag. 4 : 3
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	720 x 1440 pixels (~293 ppi) LCD (TFT/TFD)	360 x 400 pixels (~238 ppi) LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?
Battery	800 mAh	2,450 mAh	1,150 mAh	?
Processor	?	2 GHz MediaTek Helio A22 (MT6761V)	?	?
RAM	?	3 GB	?	?
Storage	? raw hardware	32 GB	? raw hardware	? raw hardware
Main Camera	Yes	8 megapixel	3 megapixel	1 megapixel
Wide Camera	-	-	-	-
Tele Camera	-	-	-	-
Video Capture	-	1080p HD	?	QCIF (176 x 144)
Front Camera	-	5 megapixel	-	-
Weight	3 oz (85g)	5.51 oz (156g)	3.3 oz (94g)	3.74 oz (106g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm)	4.25" x 1.96" x 0.52" (108 x 50 x 13.2 mm)	4.53" x 1.82" x 0.69" (115 x 46 x 17.5 mm)
Form Factor	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	Android	BlackBerry OS	Windows Mobile Standard
Network Bands	GSM: 900, 1800, 1900	4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 *	GSM: 850, 900, 1800, 1900
Data Technology	GPRS	LTE (Cat 4)	HSDPA 3.6	EDGE
Features
Flashlight	-	Yes	-	-
GPS / Location	-	n/a	n/a	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	n/a
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	Yes M3 (mostly compatible)	-
Multiple Languages	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	-	-	-	Yes
Alerts
Ringer Profiles	-	-	Yes	Yes
Connectivity
Bluetooth	-	Yes	Yes	Yes
Infrared (IR)	-	-	-	Yes
USB	-	Yes USB Type C	Yes Micro-USB	Yes Mini-USB
Wi-Fi	-	Yes	Yes 4 (802.11 b,g,n)	Yes
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
Data Tethering	-	n/a	n/a	n/a
External Antenna Jack	-	n/a	n/a	n/a
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	-	-
Memory
Memory Card Slot	-	Yes	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	n/a	n/a
Music
Headphone Jack (3.5mm)	-	Yes	Yes	-
Music Player	-	n/a	n/a	n/a
Productivity
Alarm	Yes	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a
Calendar	Yes	n/a	n/a	n/a
To-Do List	Yes	n/a	n/a	n/a
Voice Memo	Yes	n/a	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	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	AT&T Vista	BlackBerry Pearl 3G 9100 / 9105	HTC SDA (USA) / SP5m (Tornado)
	X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	AT&T Vista	BlackBerry Pearl 3G 9100 / 9105	HTC SDA (USA) / SP5m (Tornado)