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Phone Sony Ericsson K850 Samsung SCH-A990 HP iPAQ 610 Business Navigator ZTE Speed Siemens SL55
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Not yet released Released Released
Specifications 
Display Size 2.2" diag.
4 : 3
? 2.8" diag.
4 : 3
4.5" diag.
16 : 9
?
Display Resolution & Type 240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~143 ppi)
LCD (TFT/TFD)
540 x 960 pixels
(~245 ppi)
LCD (TFT/TFD)
101 x 80 pixels
LCD (STN)
Display Refresh ? ? ? 60 Hz ?
Battery ? 1,000 mAh 1,590 mAh 2,000 mAh 500 mAh
Processor ? ? 520 MHz Marvell PXA270 1.2 GHz Qualcomm Snapdragon 410 MSM8916 ?
RAM ? ? ? 1 GB ?
Storage ? raw hardware ? raw hardware ? raw hardware 8 GB ? raw hardware
Main Camera 5 megapixel 3 megapixel 3 megapixel 5 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture ? ? QCIF (176 x 144) 720p HD -
Front Camera - - - 2 megapixel -
Weight 4.2 oz
(119g)
4.4 oz
(125g)
5.1 oz
(145g)
4.8 oz
(136g)
2.79 oz
(79g)
Dimensions 4" x 1.9" x 0.7"
(102 x 48 x 17.8 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
4.61" x 2.37" x 0.69"
(117 x 60 x 17.5 mm)
5.3" x 2.6" x 0.4"
(135 x 66 x 10.2 mm)
3.21" x 1.75" x 0.86"
(82 x 44 x 21.8 mm)
Form Factor Slab Clamshell Slab Slab Slide
Platform / OS (proprietary) (proprietary) Windows Mobile Professional Android (proprietary)
Network Bands

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 25, 26, 41

CDMA: 800, 850, 1900

GSM: 900, 1800, 1900

Data Technology HSDPA 3.6 EVDO r0 HSPA 7.2 LTE (Cat 3) GPRS
Features 
Flashlight - Yes - - -
GPS / Location - Yes n/a n/a -
Accessibility
Adjustable Text Size - - n/a n/a -
Hearing Aid Compatible - Yes - Yes -
Multiple Languages Yes Yes n/a n/a Yes
TTY/TDD (Digital) Yes Yes - Yes -
Alerts
Extra Display - Yes - - -
Ringer Profiles Yes - - - Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) - - - - Yes
Mobile Hotspot - - n/a n/a -
USB Yes Yes Yes
Mini-USB
Yes
Micro-USB
-
Wi-Fi - - Yes
802.11 b,g
Yes
4 (802.11 b,g,n)
-
Contacts
Picture ID Yes Yes n/a n/a Yes
Ringer ID Yes Yes n/a n/a Yes
Voice Dialing Yes Yes n/a n/a Yes
Customization
Custom Graphics Yes Yes n/a n/a Yes
Custom Ringtones Yes Yes n/a n/a Yes
Real-Music Ringers Yes Yes n/a n/a -
Data & Network
Data Tethering Yes Yes n/a n/a Yes
WAP / Web Browser Yes Yes n/a n/a Yes
Input
Predictive Text Entry Yes Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen - - Yes Yes -
Memory
Memory Card Slot Yes Yes Yes Yes -
Messaging
Email Client Yes - n/a n/a Yes
EMS / Picture Messaging - Yes n/a n/a Yes
Instant Messaging - - n/a n/a -
MMS Yes Yes n/a n/a Yes
Text Messaging Templates Yes Yes n/a n/a Yes
Music
FM Radio Yes - - - -
Headphone Jack (3.5mm) - - - Yes -
Music Player Yes Yes n/a n/a -
Stereo Speakers - Yes - - -
Photo & Video
TV Output - Yes - - -
Video Calling Yes * - n/a n/a -
Productivity
Alarm Yes Yes n/a n/a Yes
Calculator Yes Yes n/a n/a Yes
Calendar Yes Yes n/a n/a Yes
To-Do List Yes - n/a n/a Yes
Voice Memo Yes Yes n/a n/a Yes
Software
BREW - Yes n/a n/a -
Games Yes Yes n/a n/a Yes
Java (J2ME) Yes - n/a n/a Yes
Voice
HD Voice - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Sony Ericsson K850 Samsung SCH-A990 HP iPAQ 610 Business Navigator ZTE Speed Siemens SL55
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Sony Ericsson K850 Samsung SCH-A990 HP iPAQ 610 Business Navigator ZTE Speed Siemens SL55

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