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Phone Samsung Jack i637 Siemens A56 / A56i LG Q70 LG AX-490 Samsung SCH-A645
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
? 6.4" diag.
19.5 : 9
? ?
Display Resolution & Type 320 x 240 pixels
(~167 ppi)
LCD (TFT/TFD)
101 x 64 pixels 1080 x 2310 pixels
(~398 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
Display Refresh ? ? 60 Hz ? ?
Battery 1,480 mAh 700 mAh 4,000 mAh 1,100 mAh 1,000 mAh
Processor ? ? 2 GHz Qualcomm Snapdragon 675 (SM6150) ? ?
RAM ? ? 4 GB ? ?
Storage ? raw hardware ? raw hardware 64 GB ? raw hardware ? raw hardware
Main Camera 3 megapixel - 32 megapixel Yes -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture ? - 4K UHD - -
Front Camera - - 16 megapixel - -
Weight 3.6 oz
(102g)
3 oz
(85g)
6.98 oz
(198g)
3.79 oz
(107g)
3.2 oz
(91g)
Dimensions 4.4" x 2.4" x 0.5"
(112 x 61 x 12.7 mm)
4" x 1.7" x 0.8"
(102 x 43 x 20.3 mm)
6.38" x 3.02" x 0.32"
(162 x 77 x 8.1 mm)
3.74" x 1.92" x 1"
(95 x 49 x 25.4 mm)
3.54" x 1.79" x 0.94"
(90 x 45 x 23.9 mm)
Form Factor Slab Slab Slab Clamshell Clamshell
Platform / OS Windows Mobile Standard (proprietary) Android (proprietary) (proprietary)
Network Bands

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 41, 48, 66, 71

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

AMPS: 850

Data Technology HSDPA 3.6 - LTE (Cat 12) 1xRTT 1xRTT
Features 
Fingerprint Reader - - Yes
stand-alone
- -
Flashlight - - Yes - -
GPS / Location n/a Yes n/a Yes Yes
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M3 (mostly compatible)
Multiple Languages n/a - n/a Yes Yes
TTY/TDD (Digital) - Yes Yes Yes Yes
Alerts
Extra Display - - - Yes Yes
Ringer Profiles Yes Yes - - -
Connectivity
Bluetooth Yes - Yes Yes -
NFC - - Yes - -
USB Yes - Yes
USB Type C
Yes -
Wi-Fi Yes
802.11 b,g
- Yes
5 (802.11 a,ac,b,g,n)
- -
Contacts
Picture ID n/a Yes n/a Yes Yes
Ringer ID n/a Yes n/a Yes -
Voice Dialing n/a - n/a Yes Yes
Customization
Changeable Body Plates - Yes - - -
Custom Graphics n/a Yes n/a Yes Yes
Custom Ringtones n/a Yes n/a Yes Yes
Real-Music Ringers n/a - n/a Yes -
Data & Network
Data Tethering n/a - n/a Yes -
WAP / Web Browser n/a Yes n/a Yes Yes *
Input
Predictive Text Entry n/a Yes n/a - Yes
Side Keys Yes - Yes Yes Yes
Text Keyboard, Hardware Yes - - Yes -
Touch Screen - - Yes
Capacitive
- -
Memory
Memory Card Slot Yes - Yes - -
Messaging
Email Client n/a - n/a - -
EMS / Picture Messaging n/a Yes n/a - Yes
Instant Messaging n/a - n/a - -
MMS n/a - n/a Yes -
Text Messaging Templates n/a - n/a Yes Yes
Music
Headphone Jack (3.5mm) - - Yes - -
Music Player n/a - n/a - -
Stereo Speakers - - - Yes -
Photo & Video
DLNA - - Yes - -
Power
Fast Charging - - Yes - -
Productivity
Alarm n/a Yes n/a Yes Yes
Calculator n/a Yes n/a Yes Yes
Calendar n/a - n/a Yes Yes
To-Do List n/a - n/a - Yes
Voice Memo n/a - n/a Yes Yes
Software
BREW n/a - n/a Yes Yes *
Games n/a Yes n/a Yes Yes *
Java (J2ME) n/a - n/a - -
Voice
HD Voice - - Yes - -
Headset Jack (2.5 mm) n/a - n/a Yes Yes
Speaker Phone Yes - Yes Yes Yes
  * Some versions only
  Samsung Jack i637 Siemens A56 / A56i LG Q70 LG AX-490 Samsung SCH-A645
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Jack i637 Siemens A56 / A56i LG Q70 LG AX-490 Samsung SCH-A645

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