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Phone Samsung Galaxy S II Skyrocket Asus ROG Phone II Cricket Debut S2 / AT&T Calypso 4 ZTE Blade Z Max
Current U.S. Carriers (none) (none) AT&T (none)
Global Availability Released Not yet released Released Released
Specifications 
Display Size 4.5" diag.
5 : 3
6.6" diag.
19.5 : 9
6.1" diag.
19.5 : 9
6" diag.
16 : 9
Display Resolution & Type 480 x 800 pixels
(~207 ppi)
AMOLED
1080 x 2340 pixels
(~391 ppi)
AMOLED
720 x 1560 pixels
(~282 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~367 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 120 Hz 60 Hz 60 Hz
Battery 1,850 mAh 6,000 mAh 3,000 mAh 4,080 mAh
Processor 1.5 GHz Qualcomm Snapdragon S3 APQ8060 3 GHz Qualcomm Snapdragon 855 Plus 2 GHz MediaTek Helio A22 (MT6761WB) 1.4 GHz Qualcomm Snapdragon 435 (MSM8940)
RAM 1 GB 12 GB 3 GB 2 GB
Storage 16 GB 512 GB 64 GB 32 GB
Main Camera 8 megapixel 48 megapixel 8 megapixel 16 megapixel
Wide Camera - 13 megapixel - -
Tele Camera - - - -
Video Capture 1080p HD 4K UHD ? 1080p HD
Front Camera 2 megapixel 24 megapixel 5 megapixel 8 megapixel
Weight 4.71 oz
(133g)
8.47 oz
(240g)
5.64 oz
(160g)
6.58 oz
(186g)
Dimensions 5.12" x 2.72" x 0.35"
(130 x 69 x 9 mm)
6.73" x 3.06" x 0.37"
(171 x 78 x 9.5 mm)
6.11" x 2.87" x 0.34"
(155 x 73 x 8.6 mm)
6.51" x 3.28" x 0.33"
(165 x 83 x 8.3 mm)
Platform / OS Android Android Android Android
Network Bands

4G LTE: 4, 17

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 26, 28, 29, 32, 34, 38, 39, 40, 41, 46, 66

WCDMA: 1, 2, 3, 4, 5, 8, 19

GSM: 850, 900, 1800, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30, 66

WCDMA: 1, 2, 4, 5, 8

4G LTE: 2, 4, 5, 12, 66

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 3) LTE (Cat 20) LTE (Cat 4) LTE (Cat 6)
Features 
Fingerprint Reader - Yes
in-display (optical)
- Yes
stand-alone
Flashlight - Yes Yes Yes
Accessibility
Hearing Aid Compatible Yes Yes Yes Yes
TTY/TDD (Digital) Yes - - Yes
Connectivity
Bluetooth Yes Yes Yes Yes
NFC Yes Yes - -
USB Yes
Micro-USB
Yes
USB Type C
Yes
USB Type C
Yes
USB Type C
Wi-Fi Yes
4 (802.11 a,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
Data & Network
Dual-SIM - Yes - -
Input
Side Keys Yes Yes Yes Yes
Touch Screen Yes Yes Yes Yes
Memory
Memory Card Slot Yes - Yes Yes
Music
FM Radio - Yes - Yes
Headphone Jack (3.5mm) Yes Yes Yes Yes
Stereo Speakers - Yes - -
Photo & Video
DLNA Yes - - -
TV Output Yes Yes - -
Power
Fast Charging - Yes Yes Yes
Voice
HD Voice - - Yes Yes
Speaker Phone Yes Yes Yes Yes
  Samsung Galaxy S II Skyrocket Asus ROG Phone II Cricket Debut S2 / AT&T Calypso 4 ZTE Blade Z Max
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Galaxy S II Skyrocket Asus ROG Phone II Cricket Debut S2 / AT&T Calypso 4 ZTE Blade Z Max

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