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Phone Siemens SL55 Samsung Rugby A837 Samsung SPH-N270 (Matrix Phone) BlackBerry Key2 Samsung SCH-A570
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 2" diag.
4 : 3
? 4.5" diag.
5 : 3
?
Display Resolution & Type 101 x 80 pixels
LCD (STN)
176 x 220 pixels
(~141 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
1080 x 1620 pixels
(~433 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
Display Refresh ? ? ? 60 Hz ?
Battery 500 mAh 1,000 mAh 1,000 mAh 3,500 mAh ?
Processor ? ? ? 2.2 GHz Qualcomm Snapdragon 660 ?
RAM ? ? ? 6 GB ?
Storage ? raw hardware ? raw hardware ? raw hardware 64 GB * ? raw hardware
Main Camera - 1 megapixel - 12 megapixel -
Wide Camera - - - - -
Tele Camera - - - 12 megapixel -
Video Capture - QCIF (176 x 144) - 4K UHD -
Front Camera - - - 8 megapixel -
Weight 2.79 oz
(79g)
4.66 oz
(132g)
4.66 oz
(132g)
5.93 oz
(168g)
3.6 oz
(102g)
Dimensions 3.21" x 1.75" x 0.86"
(82 x 44 x 21.8 mm)
3.95" x 2.05" x 0.9"
(100 x 52 x 22.9 mm)
4.53" x 2.28" x 0.79"
(115 x 58 x 20.1 mm)
5.96" x 2.82" x 0.33"
(151 x 72 x 8.4 mm)
3.3" x 1.8" x 0.9"
(84 x 46 x 22.9 mm)
Form Factor Slide Clamshell Slide Slab Clamshell
Platform / OS (proprietary) (proprietary) (proprietary) Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

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

CDMA: 850, 1900

Data Technology GPRS HSDPA 3.6 - LTE (Cat 11) 1xRTT
Features 
Fingerprint Reader - - - Yes
stand-alone
-
Flashlight - - - Yes -
GPS / Location - Yes Yes n/a Yes
Ruggedized - Yes - - -
Accessibility
Hearing Aid Compatible - Yes - Yes -
Multiple Languages Yes Yes Yes n/a Yes
TTY/TDD (Digital) - Yes - Yes Yes
Alerts
Extra Display - Yes - - Yes
Ringer Profiles Yes - - - -
Connectivity
Bluetooth -
Yes
Classic Audio
-
Yes
Classic Audio
-
Infrared (IR) Yes - - - -
NFC - - - Yes -
USB - Yes - Yes
USB Type C
-
Wi-Fi - - - Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes Yes Yes n/a -
Ringer ID Yes Yes Yes n/a -
Voice Dialing Yes - Yes n/a Yes
Customization
Custom Graphics Yes Yes - n/a Yes
Custom Ringtones Yes Yes - n/a Yes
Real-Music Ringers - Yes - n/a -
Data & Network
Data Tethering Yes Yes - n/a -
WAP / Web Browser Yes Yes - n/a Yes
Input
Predictive Text Entry Yes Yes Yes n/a Yes
Side Keys Yes Yes - Yes Yes
Text Keyboard, Hardware - - - Yes -
Touch Screen - - - Yes -
Memory
Memory Card Slot - Yes - Yes -
Messaging
Email Client Yes Yes - n/a -
EMS / Picture Messaging Yes - - n/a Yes
Instant Messaging - Yes - n/a -
MMS Yes Yes - n/a -
Text Messaging Templates Yes Yes - n/a Yes
Music
FM Radio - - - Yes -
Headphone Jack (3.5mm) - - - Yes -
Music Player - Yes - n/a -
Photo & Video
TV Output - - - Yes -
Power
Fast Charging - - - Yes -
Productivity
Alarm Yes Yes Yes n/a Yes
Calculator Yes Yes Yes n/a Yes
Calendar Yes Yes Yes n/a Yes
To-Do List Yes - Yes n/a Yes
Voice Memo Yes Yes Yes n/a Yes
Software
BREW - - - n/a Yes
Games Yes Yes - n/a Yes
Java (J2ME) Yes Yes - n/a -
Voice
HD Voice - - - Yes -
Headset Jack (2.5 mm) - - Yes n/a Yes
Push-To-Talk - Yes - - -
Speaker Phone Yes Yes - Yes -
  Siemens SL55 Samsung Rugby A837 Samsung SPH-N270 (Matrix Phone) BlackBerry Key2 Samsung SCH-A570
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Siemens SL55 Samsung Rugby A837 Samsung SPH-N270 (Matrix Phone) BlackBerry Key2 Samsung SCH-A570

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