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Phone Samsung SGH-A157 Sharp Sidekick LX 2007 ZTE Avid 4 Ericsson T66
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 1.8" diag.
4 : 3
3" diag.
5 : 3
5" diag.
16 : 9
?
Display Resolution & Type 128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
400 x 240 pixels
(~155 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
?
Display Refresh ? ? 60 Hz ?
Battery 800 mAh 1,540 mAh 2,520 mAh ?
Processor ? 200 MHz OMAP 331 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) ?
RAM ? ? 2 GB ?
Storage 256 MB ? raw hardware 16 GB ? raw hardware
Main Camera - 1 megapixel 8 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? 720p HD -
Front Camera - - 5 megapixel -
Weight 2.99 oz
(85g)
5.7 oz
(162g)
5.6 oz
(159g)
2.08 oz
(59g)
Dimensions 3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
5.12" x 2.36" x 0.7"
(130 x 60 x 17.9 mm)
5.7" x 2.8" x 0.36"
(145 x 71 x 9.1 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
Form Factor Clamshell Swivel Slab Slab
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 900, 1800, 1900

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

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology ? EDGE LTE (Cat 4) -
Features 
Flashlight - Yes Yes -
GPS / Location Yes - n/a -
Accessibility
Adjustable Text Size Yes Yes n/a -
Hearing Aid Compatible Yes Yes Yes -
Multiple Languages Yes - n/a Yes
TTY/TDD (Digital) Yes - Yes -
Alerts
Ringer Profiles Yes Yes - Yes
Connectivity
Bluetooth - Yes
Classic Audio
Yes -
USB Yes
Micro-USB
Yes Yes
Micro-USB
-
Wi-Fi - - Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes Yes n/a -
Ringer ID Yes Yes n/a -
Customization
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers Yes Yes n/a -
Data & Network
WAP / Web Browser Yes Yes n/a Yes
Input
Predictive Text Entry Yes - n/a Yes
Side Keys - Yes Yes Yes
Text Keyboard, Hardware - Yes - -
Touch Screen - - Yes -
Memory
Memory Card Slot - Yes Yes -
Messaging
Email Client - Yes n/a -
EMS / Picture Messaging - - n/a Yes
Instant Messaging - Yes n/a -
MMS Yes Yes n/a -
Text Messaging Templates Yes Yes n/a Yes
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) - Yes Yes -
Music Player - Yes n/a -
Productivity
Alarm Yes Yes * n/a Yes
Calculator Yes - n/a Yes
Calendar Yes Yes n/a Yes
To-Do List Yes Yes n/a Yes
Voice Memo Yes - n/a -
Software
Games - Yes n/a Yes
Java (J2ME) - Yes n/a -
Voice
HD Voice - - Yes -
Speaker Phone Yes Yes Yes -
  * Some versions only
  Samsung SGH-A157 Sharp Sidekick LX 2007 ZTE Avid 4 Ericsson T66
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-A157 Sharp Sidekick LX 2007 ZTE Avid 4 Ericsson T66

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