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Phone Samsung PM-A840 Sony Ericsson T68i Samsung Wafer R510 AT&T Vista
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 1.9" diag.
4 : 3
5.5" diag.
18 : 9
Display Resolution & Type 128 x 160 pixels
LCD (STN)
101 x 80 pixels
LCD (STN)
220 x 176 pixels
(~148 ppi)
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz
Battery ? 700 mAh 800 mAh 2,450 mAh
Processor ? ? ? 2 GHz MediaTek Helio A22 (MT6761V)
RAM ? ? ? 3 GB
Storage ? raw hardware ? raw hardware ? raw hardware 32 GB
Main Camera Yes - 1 megapixel 8 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - ? 1080p HD
Front Camera - - - 5 megapixel
Weight 3.28 oz
(93g)
2.96 oz
(84g)
2.47 oz
(70g)
5.51 oz
(156g)
Dimensions 3.54" x 1.85" x 0.94"
(90 x 47 x 23.9 mm)
3.94" x 1.89" x 0.79"
(100 x 48 x 20.1 mm)
4.45" x 1.97" x 0.33"
(113 x 50 x 8.4 mm)
5.88" x 2.82" x 0.35"
(149 x 72 x 8.9 mm)
Form Factor Clamshell Slab Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) Android
Network Bands

CDMA: 850, 1900

AMPS: 850

GSM: 900, 1800, 1900

CDMA: 850, 1900

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

WCDMA: 1, 2, 4, 5, 8

Data Technology 1xRTT GPRS EVDO r0 LTE (Cat 4)
Features 
Flashlight - - - Yes
GPS / Location Yes - Yes n/a
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
- Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Multiple Languages Yes Yes Yes n/a
TTY/TDD (Digital) Yes - Yes -
Alerts
Extra Display Yes - - -
Ringer Profiles - Yes - -
Connectivity
Bluetooth - Yes Yes Yes
Infrared (IR) - Yes - -
USB - - - Yes
USB Type C
Wi-Fi - - - Yes
Contacts
Picture ID Yes Yes Yes n/a
Ringer ID Yes Yes - n/a
Voice Dialing Yes Yes Yes n/a
Customization
Custom Graphics Yes Yes Yes n/a
Custom Ringtones Yes Yes Yes n/a
Data & Network
Data Tethering - Yes - n/a
WAP / Web Browser Yes Yes Yes n/a
Input
Predictive Text Entry Yes Yes Yes n/a
Side Keys Yes Yes Yes Yes
Touch Screen - - - Yes
Capacitive
Memory
Memory Card Slot - - Yes Yes
Messaging
Email Client - Yes - n/a
EMS / Picture Messaging - Yes - n/a
MMS - Yes Yes n/a
Text Messaging Templates Yes Yes - n/a
Music
Headphone Jack (3.5mm) - - - Yes
Music Player - - Yes n/a
Stereo Speakers - - 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 - - n/a
Voice
HD Voice - - - Yes
Headset Jack (2.5 mm) Yes - - n/a
Speaker Phone Yes - Yes Yes
  Samsung PM-A840 Sony Ericsson T68i Samsung Wafer R510 AT&T Vista
  X > < X > < X > < X

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

 
Phone Samsung PM-A840 Sony Ericsson T68i Samsung Wafer R510 AT&T Vista

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