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Phone Pantech Matrix Pro C820 Huawei Ascend XT AT&T Vista Samsung SPH-i550
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Not yet released
Specifications 
Display Size 2.4" diag.
4 : 3
6" diag.
16 : 9
5.5" diag.
18 : 9
?
Display Resolution & Type 240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~245 ppi)
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
320 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz ?
Battery 1,320 mAh 3,000 mAh 2,450 mAh ?
Processor 528 MHz ARM 11 1.5 GHz Qualcomm Snapdragon 615 (MSM8939) 2 GHz MediaTek Helio A22 (MT6761V) 200 MHz Motorola MX-1
RAM ? 2 GB 3 GB ?
Storage ? raw hardware 16 GB 32 GB ? raw hardware
Main Camera 2 megapixel 8 megapixel 8 megapixel 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture QCIF (176 x 144) 720p HD 1080p HD ?
Front Camera - 2 megapixel 5 megapixel -
Weight 5.34 oz
(151g)
7.27 oz
(206g)
5.51 oz
(156g)
?
Dimensions 4.2" x 2" x 0.9"
(107 x 51 x 22.9 mm)
6.45" x 3.3" x 0.35"
(164 x 84 x 8.9 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
3.46" x 2.34" x 1.1"
(88 x 59 x 27.9 mm)
Platform / OS Windows Mobile Standard Android Android Palm OS
Network Bands

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

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

WCDMA: 1, 2, 4, 5, 8

CDMA: 850, 1900

AMPS: 850

Data Technology HSDPA 3.6 LTE (Cat 4) LTE (Cat 4) 1xRTT
Features 
Flashlight - Yes Yes -
Accessibility
Hearing Aid Compatible - Yes Yes -
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display - - - Yes
Ringer Profiles Yes - - -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) - - - Yes
USB Yes Yes
Micro-USB
Yes
USB Type C
-
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes -
Input
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware Yes - - -
Touch Screen - Yes Yes Yes
Memory
Memory Card Slot Yes Yes Yes Yes
Music
FM Radio - Yes - -
Headphone Jack (3.5mm) - Yes Yes -
Voice
HD Voice - Yes Yes -
Speaker Phone Yes Yes Yes -
  Pantech Matrix Pro C820 Huawei Ascend XT AT&T Vista Samsung SPH-i550
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Phone Pantech Matrix Pro C820 Huawei Ascend XT AT&T Vista Samsung SPH-i550

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