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Phone Amazon Fire Samsung SGH-A127 UTStarcom CDM-7126 Asus ZenFone 4 Siemens CF75
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Not yet released
Specifications 
Display Size 4.7" diag.
16 : 9
? 1.8" diag.
4 : 3
5.5" diag.
16 : 9
?
Display Resolution & Type 720 x 1280 pixels
(~312 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
128 x 160 pixels
(~114 ppi)
LCD (STN)
1080 x 1920 pixels
(~401 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
Display Refresh ? ? ? 60 Hz ?
Battery 2,400 mAh 800 mAh 900 mAh 3,300 mAh 600 mAh
Processor 2.2 GHz Qualcomm Snapdragon 800 ? Qualcomm QSC6055 2.2 GHz Qualcomm Snapdragon 630 ?
RAM 2 GB ? ? 4 GB ?
Storage 32 GB * ? raw hardware ? raw hardware 64 GB ? raw hardware
Main Camera 13 megapixel Yes - 12 megapixel Yes
Wide Camera - - - Yes -
Tele Camera - - - - -
Video Capture 1080p HD - - 4K UHD -
Front Camera 2 megapixel - - 8 megapixel -
Weight 5.64 oz
(160g)
2.86 oz
(81g)
3 oz
(85g)
5.47 oz
(155g)
3.17 oz
(90g)
Dimensions 5.5" x 2.6" x 0.35"
(140 x 66 x 8.9 mm)
3.39" x 1.67" x 0.76"
(86 x 42 x 19.3 mm)
3.6" x 1.9" x 0.7"
(91 x 48 x 17.8 mm)
6.12" x 2.96" x 0.3"
(155 x 75 x 7.7 mm)
3.43" x 1.73" x 1.26"
(87 x 44 x 32 mm)
Form Factor Slab Clamshell Clamshell Slab Clamshell
Platform / OS (proprietary) (proprietary) (proprietary) Android (proprietary)
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 17

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 850, 1900

CDMA: 850, 1700, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 28

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 4) GPRS 1xRTT LTE (Cat 12) EDGE
Features 
Fingerprint Reader - - - Yes
stand-alone
-
Flashlight Yes - - Yes -
GPS / Location Yes - Yes n/a -
Accessibility
Hearing Aid Compatible Yes - Yes Yes -
Multiple Languages Yes Yes Yes n/a Yes
TTY/TDD (Digital) Yes Yes Yes - -
Alerts
Extra Display - Yes - - Yes
Connectivity
Bluetooth Yes
Classic Audio
-
Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) - - - - Yes
Mobile Hotspot Yes - - n/a -
NFC Yes - - Yes -
USB Yes
Micro-USB
- Yes
Mini-USB
Yes
USB Type C
Yes
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
- - Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes - - n/a -
Ringer ID Yes Yes Yes n/a -
Voice Dialing Yes - Yes n/a -
Customization
Custom Graphics - Yes Yes n/a Yes
Custom Ringtones Yes Yes Yes n/a Yes
Real-Music Ringers - - Yes n/a -
Data & Network
Data Tethering Yes - - n/a Yes
Dual-SIM - - - Yes -
WAP / Web Browser Yes Yes Yes n/a Yes
Input
Predictive Text Entry Yes Yes Yes n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes - - Yes -
Memory
Memory Card Slot - - - Yes -
Messaging
Email Client Yes - - n/a Yes
EMS / Picture Messaging - - - n/a Yes
MMS Yes Yes - n/a Yes
Text Messaging Templates Yes Yes Yes n/a Yes
Music
Headphone Jack (3.5mm) Yes - - Yes -
Music Player Yes - - n/a -
Stereo Speakers Yes - - - -
Photo & Video
Miracast Yes - - Yes -
TV Output Yes - - - -
Power
Fast Charging - - - Yes -
Productivity
Alarm Yes Yes Yes n/a Yes
Calculator Yes Yes Yes n/a Yes
Calendar Yes Yes Yes n/a Yes
To-Do List - Yes - n/a Yes
Voice Memo Yes Yes Yes n/a Yes
Software
BREW - - Yes n/a -
Games Yes Yes Yes n/a Yes
Java (J2ME) - Yes - n/a Yes
Voice
HD Voice Yes - - - -
Headset Jack (2.5 mm) - - Yes n/a -
Push-To-Talk - - - - Yes
Speaker Phone Yes Yes Yes Yes Yes
  Amazon Fire Samsung SGH-A127 UTStarcom CDM-7126 Asus ZenFone 4 Siemens CF75
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Amazon Fire Samsung SGH-A127 UTStarcom CDM-7126 Asus ZenFone 4 Siemens CF75

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