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Phone Nokia Lumia 521 / 520 Nokia 3555 Palm Treo 680 Motorola V878 Motorola ROKR Z6
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4" diag.
5 : 3
1.8" diag.
4 : 3
? ? ?
Display Resolution & Type 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
320 x 320 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ? ?
Battery 1,430 mAh ? ? ? 750 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 Yes Yes Yes 2 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 720p HD QCIF (176 x 144) CIF (352 x 288) ? ?
Front Camera - - - - -
Weight 4.39 oz
(124g)
3.32 oz
(94g)
5.5 oz
(156g)
2.82 oz
(80g)
4.06 oz
(115g)
Dimensions 4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
3.94" x 1.75" x 0.83"
(100 x 44 x 21 mm)
4.4" x 2.3" x 0.8"
(112 x 58 x 20.3 mm)
3.23" x 1.65" x 0.85"
(82 x 42 x 21.6 mm)
4.15" x 1.79" x 0.63"
(105 x 45 x 16 mm)
Form Factor Slab Clamshell Slab Clamshell Slide
Platform / OS Windows (proprietary) Palm OS (proprietary) (proprietary)
Network Bands

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 4

GSM: 850, 900, 1800, 1900

*

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

GSM: 850, 900, 1800, 1900

Data Technology HSPA+ 21 WCDMA (UMTS) EDGE GPRS EDGE
Features 
GPS / Location n/a - n/a - -
Accessibility
Hearing Aid Compatible Yes Yes * - - -
Multiple Languages n/a Yes n/a Yes Yes
TTY/TDD (Digital) Yes - Yes - Yes
Alerts
Extra Display - Yes - Yes -
Ringer Profiles - Yes - Yes Yes
Connectivity
Bluetooth Yes Yes Yes - Yes
Infrared (IR) - - Yes - -
Mobile Hotspot n/a - n/a - -
USB Yes Yes Yes Yes Yes
Wi-Fi Yes - - - -
Contacts
Picture ID n/a Yes n/a Yes Yes
Ringer ID n/a Yes n/a Yes Yes
Voice Dialing n/a Yes n/a Yes -
Customization
Custom Graphics n/a Yes n/a Yes Yes
Custom Ringtones n/a Yes n/a Yes Yes
Real-Music Ringers n/a Yes n/a - Yes
Data & Network
Data Tethering n/a - n/a Yes Yes
External Antenna Jack n/a - n/a - -
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 Yes
Text Keyboard, Hardware - - Yes - -
Touch Screen Yes - Yes - -
Memory
Memory Card Slot Yes Yes Yes - Yes
Messaging
Email Client n/a - n/a - Yes
EMS / Picture Messaging n/a - n/a Yes Yes
Instant Messaging n/a Yes * n/a - Yes
MMS n/a Yes n/a Yes Yes
Text Messaging Templates n/a Yes n/a - Yes
Music
Headphone Jack (3.5mm) Yes - - - -
Music Player n/a Yes n/a - Yes
Productivity
Alarm n/a Yes n/a Yes 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 - Yes
Voice Memo n/a Yes n/a Yes Yes
Software
Games n/a Yes n/a Yes Yes
Java (J2ME) n/a Yes n/a Yes Yes
Voice
Headset Jack (2.5 mm) n/a Yes n/a - -
Speaker Phone Yes Yes Yes - Yes
  * Some versions only
  Nokia Lumia 521 / 520 Nokia 3555 Palm Treo 680 Motorola V878 Motorola ROKR Z6
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Nokia Lumia 521 / 520 Nokia 3555 Palm Treo 680 Motorola V878 Motorola ROKR Z6

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