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Phone Casio G'zOne Rock ZTE Z222 / Z223 AT&T Maestro 3 Samsung SCH-A570
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
2" diag.
4 : 3
6.5" diag.
20 : 9
?
Display Resolution & Type 240 x 320 pixels
(~190 ppi)
LCD (TFT/TFD)
176 x 220 pixels
(~141 ppi)
LCD (TFT/TFD)
720 x 1600 pixels
(~270 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
Display Refresh ? ? 60 Hz ?
Battery 1,150 mAh 900 mAh 3,900 mAh ?
Processor ? QSC6270 2 GHz MediaTek Helio A22 (MT6761) ?
RAM ? 64 MB 3 GB ?
Storage ? raw hardware 128 MB 32 GB ? raw hardware
Main Camera 2 megapixel Yes 13 megapixel -
Wide Camera - - 5 megapixel -
Tele Camera - - - -
Video Capture ? ? 1080p HD -
Front Camera - - 5 megapixel -
Weight 4.4 oz
(125g)
3.24 oz
(92g)
6.24 oz
(177g)
3.6 oz
(102g)
Dimensions 4.1" x 2" x 0.9"
(104 x 51 x 22.9 mm)
3.76" x 1.92" x 0.73"
(96 x 49 x 18.5 mm)
6.58" x 3.03" x 0.33"
(167 x 77 x 8.4 mm)
3.3" x 1.8" x 0.9"
(84 x 46 x 22.9 mm)
Form Factor Clamshell Clamshell Slab Clamshell
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 1900

4G LTE: 2, 4, 5, 12, 14, 30

CDMA: 850, 1900

Data Technology EVDO rA HSDPA 3.6 LTE (Cat 4) 1xRTT
Features 
Barometer - - Yes -
Fingerprint Reader - - Yes
stand-alone
-
Flashlight Yes - Yes -
GPS / Location Yes - n/a Yes
Ruggedized Yes - - -
Water-Resistant Yes - - -
Accessibility
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
-
Multiple Languages Yes Yes n/a Yes
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display Yes Yes - Yes
Ringer Profiles - Yes - -
Connectivity
Bluetooth Yes Yes Yes -
USB Yes Yes
Micro-USB
Yes
USB Type C
-
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes Yes n/a -
Ringer ID Yes Yes n/a -
Voice Dialing Yes - n/a Yes
Customization
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers Yes Yes n/a -
Data & Network
Data Tethering Yes - n/a -
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 -
Messaging
Email Client Yes 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 -
Music Player Yes - n/a -
Productivity
Alarm Yes Yes n/a Yes
Calculator Yes Yes n/a Yes
Calendar Yes Yes n/a Yes
To-Do List - - n/a Yes
Voice Memo Yes Yes n/a Yes
Software
BREW Yes - n/a Yes
Games Yes Yes n/a Yes
Java (J2ME) - Yes n/a -
Voice
HD Voice - - Yes -
Headset Jack (2.5 mm) Yes - n/a Yes
Push-To-Talk Yes - - -
Speaker Phone Yes Yes Yes -
  * Some versions only
  Casio G'zOne Rock ZTE Z222 / Z223 AT&T Maestro 3 Samsung SCH-A570
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Phone Casio G'zOne Rock ZTE Z222 / Z223 AT&T Maestro 3 Samsung SCH-A570

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