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Phone Samsung SGH-A657 Samsung SGH-X640 Motorola Rival A455 Samsung Galaxy Note II (Verizon)
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 2.2" diag.
4 : 3
5.5" diag.
16 : 9
Display Resolution & Type 176 x 220 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~131 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~267 ppi)
AMOLED
Display Refresh ? ? ? 60 Hz
Battery 1,420 mAh 800 mAh 940 mAh 3,100 mAh
Processor ? ? ? 1.6 GHz Samsung Exynos
RAM ? ? ? 2 GB
Storage ? raw hardware ? raw hardware ? raw hardware 16 GB
Main Camera - Yes 2 megapixel 8 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - QVGA (320 x 240) 1080p HD
Front Camera - - - 2 megapixel
Weight 4.34 oz
(123g)
3 oz
(85g)
4.48 oz
(127g)
6.35 oz
(180g)
Dimensions 4.53" x 2.05" x 0.77"
(115 x 52 x 19.6 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.82" x 1.96" x 0.73"
(97 x 50 x 18.5 mm)
5.94" x 3.16" x 0.38"
(151 x 80 x 9.7 mm)
Form Factor Slab Clamshell Slide Slab
Platform / OS (proprietary) (proprietary) (proprietary) Android
Network Bands

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

4G LTE: 13

WCDMA: 1, 2, 5, 8

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology HSDPA 3.6 GPRS EVDO r0 LTE (Cat 3)
Features 
Flashlight Yes - - -
GPS / Location Yes - Yes n/a
Ruggedized Yes - - -
Accessibility
Adjustable Text Size - - - n/a
Hearing Aid Compatible - - Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages Yes Yes Yes n/a
TTY/TDD (Digital) Yes - Yes Yes
Connectivity
Bluetooth Yes - Yes Yes
Mobile Hotspot - - - n/a
NFC - - - Yes
USB Yes - Yes
Micro-USB
Yes
Micro-USB
Wi-Fi - - - Yes
4 (802.11 a,b,g,n)
Contacts
Picture ID Yes Yes Yes n/a
Ringer ID Yes Yes Yes n/a
Voice Dialing - - Yes n/a
Customization
Custom Graphics Yes Yes Yes n/a
Custom Ringtones Yes Yes Yes n/a
Real-Music Ringers Yes - Yes n/a
Data & Network
Data Tethering Yes - Yes n/a
WAP / Web Browser Yes Yes Yes n/a
Input
Predictive Text Entry Yes Yes - n/a
Side Keys Yes Yes Yes Yes
Stylus - - - Yes
Text Keyboard, Hardware - - Yes -
Touch Screen - - Yes Yes
Capacitive
Memory
Memory Card Slot Yes - Yes Yes
Messaging
Email Client Yes - Yes n/a
EMS / Picture Messaging - Yes Yes n/a
Instant Messaging Yes - Yes n/a
MMS Yes Yes Yes n/a
Text Messaging Templates Yes Yes Yes n/a
Music
Headphone Jack (3.5mm) - - Yes Yes
Music Player Yes - Yes n/a
Photo & Video
DLNA - - - Yes
TV Output - - - Yes
Productivity
Alarm Yes Yes Yes n/a
Calculator Yes Yes Yes n/a
Calendar Yes Yes Yes n/a
To-Do List Yes Yes - n/a
Voice Memo Yes Yes Yes n/a
Software
BREW - - Yes n/a
Games Yes Yes Yes n/a
Java (J2ME) Yes Yes - n/a
Voice
Headset Jack (2.5 mm) - Yes - n/a
Push-To-Talk Yes - - -
Speaker Phone Yes Yes Yes Yes
  Samsung SGH-A657 Samsung SGH-X640 Motorola Rival A455 Samsung Galaxy Note II (Verizon)
  X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-A657 Samsung SGH-X640 Motorola Rival A455 Samsung Galaxy Note II (Verizon)

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