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Phone AT&T Vista ZTE Prelude / Avail 2 BlackBerry Storm2 9550 BlackBerry 7750
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 5.5" diag.
18 : 9
3.5" diag.
5 : 3
3.3" diag.
4 : 3
?
Display Resolution & Type 720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
360 x 480 pixels
(~185 ppi)
LCD (TFT/TFD)
240 x 240 pixels
LCD (Color)
Display Refresh 60 Hz 60 Hz ? ?
Battery 2,450 mAh 1,500 mAh 1,400 mAh ?
Processor 2 GHz MediaTek Helio A22 (MT6761V) 1 GHz Qualcomm Snapdragon MSM7225A ? ?
RAM 3 GB 512 MB ? ?
Storage 32 GB 4 GB ? raw hardware ? raw hardware
Main Camera 8 megapixel 2 megapixel 3 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture 1080p HD VGA (640 x 480) ? -
Front Camera 5 megapixel - - -
Weight 5.51 oz
(156g)
4.4 oz
(125g)
5.64 oz
(160g)
5.01 oz
(142g)
Dimensions 5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
4.6" x 2.44" x 0.45"
(117 x 62 x 11.4 mm)
4.43" x 2.45" x 0.55"
(113 x 62 x 14 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
Platform / OS Android Android BlackBerry OS BlackBerry OS
Network Bands

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30

WCDMA: 1, 2, 4, 5, 8

WCDMA: 2, 5

GSM: 850, 1900

WCDMA: 1

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology LTE (Cat 4) HSPA 7.2 EVDO rA 1xRTT
Features 
Flashlight Yes - - -
Accessibility
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
-
TTY/TDD (Digital) - Yes Yes Yes
Alerts
Ringer Profiles - - Yes Yes
Connectivity
Bluetooth Yes Yes Yes -
USB Yes
USB Type C
Yes Yes Yes
Wi-Fi Yes Yes
4 (802.11 b,g,n)
Yes
802.11 b,g
-
Input
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes Yes -
Music
Headphone Jack (3.5mm) Yes Yes Yes -
Voice
HD Voice Yes - - -
Speaker Phone Yes Yes Yes -
  AT&T Vista ZTE Prelude / Avail 2 BlackBerry Storm2 9550 BlackBerry 7750
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone AT&T Vista ZTE Prelude / Avail 2 BlackBerry Storm2 9550 BlackBerry 7750

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