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Phone BlackBerry Key2 Samsung Galaxy S6 (GSM) Nokia 1661 Motorola Moto z4 Samsung SGH-X640
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4.5" diag.
5 : 3
5.1" diag.
16 : 9
1.8" diag.
4 : 3
6.4" diag.
19.5 : 9
?
Display Resolution & Type 1080 x 1620 pixels
(~433 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
1080 x 2340 pixels
(~403 ppi)
AMOLED
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz ? 60 Hz ?
Battery 3,500 mAh 2,550 mAh 860 mAh 3,600 mAh 800 mAh
Processor 2.2 GHz Qualcomm Snapdragon 660 2.1 GHz Samsung Exynos 7420 ? 2 GHz Qualcomm Snapdragon 675 ?
RAM 6 GB 3 GB ? 4 GB ?
Storage 64 GB * 32 GB * ? raw hardware 128 GB ? raw hardware
Main Camera 12 megapixel 16 megapixel - 48 megapixel Yes
Wide Camera - - - - -
Tele Camera 12 megapixel - - - -
Video Capture 4K UHD 4K UHD - 4K UHD -
Front Camera 8 megapixel 5 megapixel - 25 megapixel -
Weight 5.93 oz
(168g)
4.87 oz
(138g)
2.9 oz
(82g)
6 oz
(170g)
3 oz
(85g)
Dimensions 5.96" x 2.82" x 0.33"
(151 x 72 x 8.4 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
4.25" x 1.8" x 0.53"
(108 x 46 x 13.5 mm)
6.22" x 2.96" x 0.29"
(158 x 75 x 7.4 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slab Slab Slab Slab Clamshell
Platform / OS Android Android (proprietary) Android (proprietary)
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 28, 29, 30, 38, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

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

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

GSM: 850, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 28, 29, 30, 38, 41, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

Data Technology LTE (Cat 11) LTE (Cat 6) - LTE (Cat 12) GPRS
Features 
Fingerprint Reader Yes
stand-alone
Yes - Yes -
Flashlight Yes Yes Yes Yes -
VR-ready - Yes - - -
Water-Resistant - - - Yes -
Accessibility
Hearing Aid Compatible Yes Yes - Yes -
Multiple Languages n/a n/a - n/a Yes
TTY/TDD (Digital) Yes Yes - Yes -
Alerts
Ringer Profiles - - Yes - -
Connectivity
Bluetooth Yes Yes - Yes -
Infrared (IR) - Yes - - -
MirrorLink - Yes - - -
NFC Yes Yes - Yes -
USB Yes
USB Type C
Yes
Micro-USB
- Yes
USB Type C
-
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID n/a n/a - n/a Yes
Ringer ID n/a n/a - n/a Yes
Customization
Custom Graphics n/a n/a - n/a Yes
Custom Ringtones n/a n/a - n/a Yes
Data & Network
WAP / Web Browser n/a n/a - n/a Yes
Input
Predictive Text Entry n/a n/a Yes n/a Yes
Side Keys Yes Yes - Yes Yes
Text Keyboard, Hardware Yes - - - -
Touch Screen Yes Yes - Yes -
Memory
Memory Card Slot Yes - - Yes -
Messaging
EMS / Picture Messaging n/a n/a - n/a Yes
MMS n/a n/a - n/a Yes
Text Messaging Templates n/a n/a - n/a Yes
Music
FM Radio Yes - Yes Yes -
Headphone Jack (3.5mm) Yes Yes - Yes -
Photo & Video
DLNA - Yes - - -
Miracast - Yes - - -
TV Output Yes Yes - - -
Power
Fast Charging Yes Yes - Yes -
Wireless Charging - Yes - - -
Productivity
Alarm n/a n/a Yes n/a Yes
Calculator n/a n/a Yes n/a Yes
Calendar n/a n/a Yes n/a Yes
To-Do List n/a n/a - n/a Yes
Voice Memo n/a n/a Yes n/a Yes
Software
Games n/a n/a Yes n/a Yes
Java (J2ME) n/a n/a - n/a Yes
Voice
HD Voice Yes Yes - Yes -
Headset Jack (2.5 mm) n/a n/a Yes n/a Yes
Speaker Phone Yes Yes Yes Yes Yes
  BlackBerry Key2 Samsung Galaxy S6 (GSM) Nokia 1661 Motorola Moto z4 Samsung SGH-X640
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone BlackBerry Key2 Samsung Galaxy S6 (GSM) Nokia 1661 Motorola Moto z4 Samsung SGH-X640

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