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Phone Sony Ericsson K850 ZTE Engage LT / Engage MT Nokia 6310i Coolpad Defiant Alcatel Pop Astro
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.2" diag.
4 : 3
4" diag.
5 : 3
? 5" diag.
16 : 9
4.5" diag.
16 : 9
Display Resolution & Type 240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
96 x 65 pixels 480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
540 x 960 pixels
(~245 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? 60 Hz 60 Hz
Battery ? 1,900 mAh ? 2,450 mAh 2,000 mAh
Processor ? ? ? 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) 1.5 GHz MediaTek MTK6732
RAM ? 1 GB ? 1 GB 1 GB
Storage ? raw hardware 4 GB ? raw hardware 8 GB 4 GB
Main Camera 5 megapixel 3 megapixel - 5 megapixel 5 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture ? WVGA / 480p - 720p HD 1080p HD
Front Camera - Yes - 2 megapixel Yes
Weight 4.2 oz
(119g)
5.09 oz
(144g)
3.92 oz
(111g)
6.5 oz
(184g)
5.11 oz
(145g)
Dimensions 4" x 1.9" x 0.7"
(102 x 48 x 17.8 mm)
4.78" x 2.54" x 0.46"
(121 x 64 x 11.7 mm)
5.08" x 1.85" x 0.75"
(129 x 47 x 19.1 mm)
5.69" x 2.81" x 0.4"
(145 x 71 x 10.2 mm)
5.23" x 2.57" x 0.39"
(133 x 65 x 9.9 mm)
Form Factor Slab Slab Slab Slab Slab
Platform / OS (proprietary) Android (proprietary) Android Android
Network Bands

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1700, 1900

GSM: 900, 1800, 1900

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology HSDPA 3.6 EVDO rA GPRS LTE (Cat 4) LTE (Cat 4)
Features 
Flashlight - - - Yes Yes
GPS / Location - n/a Yes n/a n/a
Accessibility
Adjustable Text Size - n/a - n/a n/a
Hearing Aid Compatible - - - Yes Yes
Multiple Languages Yes n/a Yes n/a n/a
TTY/TDD (Digital) Yes Yes - Yes Yes
Alerts
Ringer Profiles Yes - Yes - -
Connectivity
Bluetooth Yes Yes Yes Yes Yes
Infrared (IR) - - Yes - -
Mobile Hotspot - n/a - n/a n/a
USB Yes Yes
Micro-USB
- Yes
Micro-USB
Yes
Micro-USB
Wi-Fi - Yes - Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
Contacts
Picture ID Yes n/a Yes n/a n/a
Ringer ID Yes n/a Yes n/a n/a
Voice Dialing Yes n/a Yes n/a n/a
Customization
Custom Graphics Yes n/a - n/a n/a
Custom Ringtones Yes n/a Yes n/a n/a
Real-Music Ringers Yes n/a - n/a n/a
Data & Network
Data Tethering Yes n/a Yes n/a n/a
WAP / Web Browser Yes n/a Yes n/a n/a
Input
Predictive Text Entry Yes n/a Yes n/a n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen - Yes - Yes Yes
Memory
Memory Card Slot Yes Yes - Yes Yes
Messaging
Email Client Yes n/a - n/a n/a
EMS / Picture Messaging - n/a Yes n/a n/a
Instant Messaging - n/a - n/a n/a
MMS Yes n/a - n/a n/a
Text Messaging Templates Yes n/a Yes n/a n/a
Music
FM Radio Yes - - - Yes
Headphone Jack (3.5mm) - Yes - Yes Yes
Music Player Yes n/a - n/a n/a
Photo & Video
Video Calling Yes * n/a - n/a n/a
Productivity
Alarm Yes n/a Yes n/a n/a
Calculator Yes n/a Yes n/a n/a
Calendar Yes n/a Yes n/a n/a
To-Do List Yes n/a Yes n/a n/a
Voice Memo Yes n/a Yes n/a n/a
Software
Games Yes n/a Yes n/a n/a
Java (J2ME) Yes n/a Yes n/a n/a
Voice
HD Voice - - - - Yes
Speaker Phone Yes Yes - Yes Yes
  * Some versions only
  Sony Ericsson K850 ZTE Engage LT / Engage MT Nokia 6310i Coolpad Defiant Alcatel Pop Astro
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Sony Ericsson K850 ZTE Engage LT / Engage MT Nokia 6310i Coolpad Defiant Alcatel Pop Astro

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