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Phone Nokia Lumia 521 / 520 Siemens M75 Nokia 3650 Casio G'zOne Boulder Motorola E310
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Not yet released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
? 2.1" diag.
1 : 1
2" diag.
4 : 3
?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
132 x 176 pixels
LCD (TFT/TFD)
176 x 208 pixels
(~130 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
128 x 128 pixels
LCD (STN)
Display Refresh ? ? ? ? ?
Battery 1,430 mAh 750 mAh 850 mAh 810 mAh ?
Processor 1 GHz Qualcomm Snapdragon S4 MSM8270 ? ? ? ?
RAM 512 MB ? ? ? ?
Storage 8 GB ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 5 megapixel 1 megapixel Yes 1 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD ? ? ? -
Front Camera - - - - -
Weight 4.39 oz
(124g)
3.88 oz
(110g)
4.59 oz
(130g)
4.9 oz
(139g)
3.53 oz
(100g)
Dimensions 4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
4.35" x 2.03" x 0.82"
(110 x 52 x 20.8 mm)
5.1" x 2.24" x 1"
(130 x 57 x 25.4 mm)
3.9" x 2" x 0.9"
(99 x 51 x 22.9 mm)
1.88" x 3.43" x 0.94"
(48 x 87 x 23.9 mm)
Form Factor Slab Slab Slab Clamshell Clamshell
Platform / OS Windows (proprietary) S60 (Symbian) (proprietary) (proprietary)
Network Bands

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology HSPA+ 21 GPRS GPRS EVDO rA 1xRTT
Features 
Flashlight - - - Yes -
GPS / Location n/a - n/a Yes Yes
Ruggedized - Yes - Yes -
Water-Resistant - - - Yes -
Accessibility
Hearing Aid Compatible Yes - - Yes -
Multiple Languages n/a Yes n/a Yes Yes
TTY/TDD (Digital) Yes - Yes Yes Yes
Alerts
Extra Display - - - Yes Yes
Ringer Profiles - Yes Yes - Yes
Connectivity
Bluetooth Yes Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
-
Infrared (IR) - Yes Yes - -
Mobile Hotspot n/a - n/a - -
USB Yes Yes - Yes Yes
Wi-Fi Yes - - - -
Contacts
Picture ID n/a Yes n/a Yes -
Ringer ID n/a Yes n/a Yes -
Voice Dialing n/a - n/a Yes Yes
Customization
Changeable Body Plates - - Yes Yes Yes
Custom Graphics n/a Yes n/a Yes Yes
Custom Ringtones n/a Yes n/a Yes Yes
Real-Music Ringers n/a - n/a - -
Data & Network
Data Tethering n/a Yes n/a Yes Yes
WAP / Web Browser n/a Yes n/a Yes Yes
Input
Predictive Text Entry n/a Yes n/a Yes Yes
Side Keys Yes Yes - Yes Yes
Touch Screen Yes - - - -
Memory
Memory Card Slot Yes Yes Yes Yes -
Messaging
Email Client n/a Yes n/a - -
EMS / Picture Messaging n/a Yes n/a Yes Yes
Instant Messaging n/a - n/a - -
MMS n/a Yes n/a Yes Yes
Text Messaging Templates n/a - n/a Yes Yes
Music
Headphone Jack (3.5mm) Yes - - - -
Music Player n/a Yes n/a Yes -
Productivity
Alarm n/a Yes n/a Yes -
Calculator n/a Yes n/a Yes Yes
Calendar n/a Yes n/a Yes Yes
To-Do List n/a Yes n/a - -
Voice Memo n/a Yes n/a Yes Yes
Software
BREW n/a - n/a Yes Yes
Games n/a Yes n/a Yes Yes
Java (J2ME) n/a Yes n/a - -
Voice
Headset Jack (2.5 mm) n/a - n/a - Yes
Push-To-Talk - Yes - Yes -
Speaker Phone Yes Yes Yes Yes -
  Nokia Lumia 521 / 520 Siemens M75 Nokia 3650 Casio G'zOne Boulder Motorola E310
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Phone Nokia Lumia 521 / 520 Siemens M75 Nokia 3650 Casio G'zOne Boulder Motorola E310

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