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Phone Samsung SPH-A520 ZTE Render Palm Pre Plus (GSM) ZTE Avid 4 Samsung PM-A840
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 4" diag.
5 : 3
3.1" diag.
5 : 3
5" diag.
16 : 9
?
Display Resolution & Type ?
LCD (STN)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
320 x 480 pixels
(~186 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
Display Refresh ? ? ? 60 Hz ?
Battery ? 1,600 mAh 1,150 mAh 2,520 mAh ?
Processor ? 1 GHz Qualcomm MSM7627A ? 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) ?
RAM ? 1 GB ? 2 GB ?
Storage ? raw hardware 4 GB ? raw hardware 16 GB ? raw hardware
Main Camera - 5 megapixel 3 megapixel 8 megapixel Yes
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - VGA (640 x 480) VGA (640 x 480) 720p HD -
Front Camera - - - 5 megapixel -
Weight 3.6 oz
(102g)
4.8 oz
(136g)
4.89 oz
(139g)
5.6 oz
(159g)
3.28 oz
(93g)
Dimensions 3.46" x 1.83" x 0.91"
(88 x 46 x 23.1 mm)
4.8" x 2.52" x 0.48"
(122 x 64 x 12.2 mm)
3.9" x 2.3" x 0.67"
(99 x 58 x 17 mm)
5.7" x 2.8" x 0.36"
(145 x 71 x 9.1 mm)
3.54" x 1.85" x 0.94"
(90 x 47 x 23.9 mm)
Form Factor Clamshell Slab Slide Slab Clamshell
Platform / OS (proprietary) Windows webOS Android (proprietary)
Network Bands

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 66

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology 1xRTT EVDO rA HSDPA 1.8 LTE (Cat 4) 1xRTT
Features 
Flashlight - - - Yes -
GPS / Location Yes n/a n/a n/a Yes
Accessibility
Hearing Aid Compatible - Yes - Yes Yes
Multiple Languages Yes n/a n/a n/a Yes
TTY/TDD (Digital) - Yes Yes Yes Yes
Alerts
Extra Display Yes - - - Yes
Connectivity
Bluetooth - Yes Yes Yes -
Mobile Hotspot - n/a n/a n/a -
USB - Yes
Micro-USB
Yes
Micro-USB
Yes
Micro-USB
-
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes
802.11 b,g
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes n/a n/a n/a Yes
Ringer ID Yes n/a n/a n/a Yes
Voice Dialing Yes n/a n/a n/a Yes
Customization
Custom Graphics Yes n/a n/a n/a Yes
Custom Ringtones Yes n/a n/a n/a Yes
Real-Music Ringers - n/a n/a n/a -
Data & Network
Data Tethering Yes n/a n/a n/a -
WAP / Web Browser Yes n/a n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes - -
Touch Screen - Yes Yes Yes -
Memory
Memory Card Slot - - - Yes -
Messaging
Email Client - n/a n/a n/a -
Instant Messaging - n/a n/a n/a -
MMS - n/a n/a n/a -
Text Messaging Templates - n/a n/a n/a Yes
Music
FM Radio - Yes - Yes -
Headphone Jack (3.5mm) - Yes Yes Yes -
Music Player - n/a n/a n/a -
Productivity
Alarm Yes n/a n/a n/a Yes
Calculator Yes n/a n/a n/a Yes
Calendar Yes n/a n/a n/a Yes
To-Do List Yes n/a n/a n/a Yes
Voice Memo Yes n/a n/a n/a Yes
Software
Games Yes n/a n/a n/a Yes
Java (J2ME) - n/a n/a n/a Yes
Voice
HD Voice - - - Yes -
Headset Jack (2.5 mm) Yes n/a n/a n/a Yes
Speaker Phone - Yes Yes Yes Yes
  Samsung SPH-A520 ZTE Render Palm Pre Plus (GSM) ZTE Avid 4 Samsung PM-A840
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Phone Samsung SPH-A520 ZTE Render Palm Pre Plus (GSM) ZTE Avid 4 Samsung PM-A840

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