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Phone Siemens C56 Cricket Debut S2 / AT&T Calypso 4 Cricket Debut Smart Sanyo RL-4920 ZTE Obsidian
Current U.S. Carriers (none) AT&T (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 6.1" diag.
19.5 : 9
5.5" diag.
18 : 9
? 4.5" diag.
16 : 9
Display Resolution & Type 101 x 64 pixels 720 x 1560 pixels
(~282 ppi)
LCD (TFT/TFD)
720 x 1440 pixels
(~293 ppi)
LCD (TFT/TFD)
128 x 112 pixels
LCD (Color)
480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz ? 60 Hz
Battery 700 mAh 3,000 mAh 2,500 mAh 1,700 mAh 1,800 mAh
Processor ? 2 GHz MediaTek Helio A22 (MT6761WB) 2 GHz MediaTek Helio A22 (MT6761V) ? 1 GHz MediaTek / MT6735M
RAM ? 3 GB 3 GB ? 1 GB
Storage ? raw hardware 64 GB 32 GB ? raw hardware 8 GB
Main Camera - 8 megapixel 5 megapixel - 5 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - ? 1080p HD - 720p HD
Front Camera - 5 megapixel 5 megapixel - 2 megapixel
Weight 3 oz
(85g)
5.64 oz
(160g)
5.64 oz
(160g)
4.03 oz
(114g)
4.66 oz
(132g)
Dimensions 3.98" x 1.73" x 0.83"
(101 x 44 x 21.1 mm)
6.11" x 2.87" x 0.34"
(155 x 73 x 8.6 mm)
5.87" x 2.83" x 0.38"
(149 x 72 x 9.7 mm)
4.22" x 1.85" x 0.85"
(107 x 47 x 21.6 mm)
5.41" x 2.7" x 0.39"
(137 x 69 x 10 mm)
Form Factor Slab Slab Slab Slab Slab
Platform / OS (proprietary) Android Android (proprietary) Android
Network Bands

GSM: 850, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30, 66

WCDMA: 1, 2, 4, 5, 8

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

WCDMA: 2, 4, 5

CDMA: 850, 1900

AMPS: 850

4G LTE: 2, 4, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS LTE (Cat 4) LTE (Cat 4) 1xRTT LTE (Cat 4)
Features 
Flashlight - Yes Yes - Yes
GPS / Location Yes n/a n/a Yes n/a
Accessibility
Adjustable Text Size - n/a n/a - n/a
Hearing Aid Compatible - Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
- Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages Yes n/a n/a Yes n/a
TTY/TDD (Digital) Yes - - Yes Yes
Alerts
Ringer Profiles Yes - - - -
Connectivity
Bluetooth - Yes Yes - Yes
Mobile Hotspot - n/a n/a - n/a
USB Yes Yes
USB Type C
Yes
USB Type C
Yes Yes
Micro-USB
Wi-Fi - Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- Yes
4 (802.11 b,g,n)
Contacts
Picture ID - n/a n/a Yes n/a
Ringer ID Yes n/a n/a Yes n/a
Voice Dialing Yes n/a n/a Yes n/a
Customization
Changeable Body Plates Yes - - - -
Custom Graphics Yes n/a n/a Yes n/a
Custom Ringtones Yes n/a n/a Yes n/a
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 Yes n/a
Input
Predictive Text Entry Yes n/a n/a Yes n/a
Side Keys - Yes Yes Yes Yes
Touch Screen - Yes
Capacitive
Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot - Yes Yes - Yes
Messaging
Email Client - n/a n/a - n/a
EMS / Picture Messaging Yes n/a n/a - n/a
Instant Messaging - n/a n/a - n/a
MMS - n/a n/a - n/a
Text Messaging Templates Yes n/a n/a - n/a
Music
Headphone Jack (3.5mm) - Yes Yes - Yes
Music Player - n/a n/a - n/a
Power
Fast Charging - Yes - - -
Productivity
Alarm Yes n/a n/a Yes n/a
Calculator Yes n/a n/a Yes n/a
Calendar Yes n/a n/a Yes n/a
To-Do List - n/a n/a Yes n/a
Voice Memo - n/a n/a Yes n/a
Software
Games Yes n/a n/a Yes n/a
Java (J2ME) Yes n/a n/a Yes n/a
Voice
Call Screening - - - Yes -
HD Voice - Yes Yes - -
Headset Jack (2.5 mm) - n/a n/a Yes n/a
Push-To-Talk - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  Siemens C56 Cricket Debut S2 / AT&T Calypso 4 Cricket Debut Smart Sanyo RL-4920 ZTE Obsidian
  X > < X > < X > < X > < X

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

 
Phone Siemens C56 Cricket Debut S2 / AT&T Calypso 4 Cricket Debut Smart Sanyo RL-4920 ZTE Obsidian

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