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Phone ZTE Savvy Samsung Galaxy S6 (GSM) Nokia Lumia 521 / 520 ZTE Blade Z Max LG K4 / Optimus Zone 3 / Rebel
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
5.1" diag.
16 : 9
4" diag.
5 : 3
6" diag.
16 : 9
4.5" diag.
16 : 9
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~367 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ? 60 Hz 60 Hz
Battery 1,650 mAh 2,550 mAh 1,430 mAh 4,080 mAh 1,940 mAh
Processor 1 GHz Qualcomm MSM8625 2.1 GHz Samsung Exynos 7420 1 GHz Qualcomm Snapdragon S4 MSM8270 1.4 GHz Qualcomm Snapdragon 435 (MSM8940) 1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM 768 MB 3 GB 512 MB 2 GB 1.5 GB
Storage 4 GB 32 GB * 8 GB 32 GB 16 GB *
Main Camera 5 megapixel 16 megapixel 5 megapixel 16 megapixel 5 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture WVGA / 480p 4K UHD 720p HD 1080p HD 720p HD
Front Camera - 5 megapixel - 8 megapixel 2 megapixel
Weight 4.43 oz
(126g)
4.87 oz
(138g)
4.39 oz
(124g)
6.58 oz
(186g)
3.99 oz
(113g)
Dimensions 4.96" x 2.55" x 0.42"
(126 x 65 x 10.7 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
6.51" x 3.28" x 0.33"
(165 x 83 x 8.3 mm)
5.19" x 2.62" x 0.35"
(132 x 67 x 8.9 mm)
Platform / OS Android Android Windows Android Android
Network Bands

CDMA: 850, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 29, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

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

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 13

WCDMA: 1, 2, 5

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

*

Data Technology EVDO rA LTE (Cat 6) HSPA+ 21 LTE (Cat 6) LTE (Cat 3)
Features 
Fingerprint Reader - Yes - Yes
stand-alone
-
Flashlight Yes Yes - Yes Yes
VR-ready - Yes - - -
Accessibility
Hearing Aid Compatible Yes Yes Yes Yes Yes
TTY/TDD (Digital) Yes Yes Yes Yes Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - Yes - - -
MirrorLink - Yes - - -
NFC - Yes - - -
USB Yes
Micro-USB
Yes
Micro-USB
Yes Yes
USB Type C
Yes
Micro-USB
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Yes Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
Input
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes Yes Yes Yes Yes
Memory
Memory Card Slot Yes - Yes Yes Yes
Music
FM Radio - - - Yes -
Headphone Jack (3.5mm) Yes Yes Yes Yes Yes
Photo & Video
DLNA Yes Yes - - -
Miracast - Yes - - Yes
TV Output - Yes - - -
Power
Fast Charging - Yes - Yes -
Wireless Charging - Yes - - -
Voice
HD Voice - Yes - Yes Yes *
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  ZTE Savvy Samsung Galaxy S6 (GSM) Nokia Lumia 521 / 520 ZTE Blade Z Max LG K4 / Optimus Zone 3 / Rebel
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone ZTE Savvy Samsung Galaxy S6 (GSM) Nokia Lumia 521 / 520 ZTE Blade Z Max LG K4 / Optimus Zone 3 / Rebel

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