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Phone Samsung SGH-X640 Samsung SGH-T809 / SGH-D820 AT&T Vista Sony Ericsson TM506
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 5.5" diag.
18 : 9
2.2" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 800 mAh ? 2,450 mAh 950 mAh
Processor ? ? 2 GHz MediaTek Helio A22 (MT6761V) ?
RAM ? ? 3 GB ?
Storage ? raw hardware ? raw hardware 32 GB ? raw hardware
Main Camera Yes 1 megapixel 8 megapixel 2 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - CIF (352 x 288) 1080p HD QVGA (320 x 240)
Front Camera - - 5 megapixel -
Weight 3 oz
(85g)
3.35 oz
(95g)
5.51 oz
(156g)
3.56 oz
(101g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.9" x 2" x 0.58"
(99 x 51 x 14.7 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
3.74" x 1.86" x 0.7"
(95 x 47 x 17.8 mm)
Form Factor Clamshell Slide Slab Clamshell
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30

WCDMA: 1, 2, 4, 5, 8

WCDMA: 1, 4

GSM: 850, 1800, 1900

Data Technology GPRS EDGE LTE (Cat 4) HSDPA 3.6
Features 
Flashlight - - Yes -
GPS / Location - - n/a Yes
Accessibility
Hearing Aid Compatible - Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
-
Multiple Languages Yes Yes n/a Yes
TTY/TDD (Digital) - Yes - Yes
Alerts
Extra Display - - - Yes
Ringer Profiles - - - Yes
Connectivity
Bluetooth - Yes Yes Yes
USB - Yes Yes
USB Type C
Yes
Wi-Fi - - Yes -
Contacts
Picture ID Yes Yes n/a Yes
Ringer ID Yes Yes n/a Yes
Voice Dialing - - n/a Yes
Customization
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers - Yes n/a Yes
Data & Network
Data Tethering - Yes n/a -
External Antenna Jack - - n/a Yes
WAP / Web Browser Yes Yes n/a Yes
Input
Predictive Text Entry Yes Yes n/a Yes
Side Keys Yes Yes Yes Yes
Touch Screen - - Yes
Capacitive
-
Memory
Memory Card Slot - Yes Yes Yes
Messaging
Email Client - - n/a Yes
EMS / Picture Messaging Yes Yes n/a -
Instant Messaging - Yes n/a Yes
MMS Yes Yes n/a Yes
Text Messaging Templates Yes Yes n/a Yes
Music
Headphone Jack (3.5mm) - - Yes -
Music Player - Yes n/a Yes
Stereo Speakers - Yes - -
Productivity
Alarm Yes Yes n/a Yes
Calculator Yes Yes n/a Yes
Calendar Yes Yes n/a Yes
To-Do List Yes Yes n/a Yes
Voice Memo Yes Yes n/a Yes
Software
Games Yes Yes n/a Yes
Java (J2ME) Yes Yes n/a Yes
Voice
HD Voice - - Yes -
Headset Jack (2.5 mm) Yes - n/a -
Speaker Phone Yes Yes Yes Yes
  Samsung SGH-X640 Samsung SGH-T809 / SGH-D820 AT&T Vista Sony Ericsson TM506
  X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Samsung SGH-T809 / SGH-D820 AT&T Vista Sony Ericsson TM506

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