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Phone Motorola T191 Samsung Wafer R510 Motorola T720 / T721 (GSM) Nokia Lumia 521 / 520
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 1.9" diag.
4 : 3
? 4" diag.
5 : 3
Display Resolution & Type 98 x 64 pixels 220 x 176 pixels
(~148 ppi)
LCD (TFT/TFD)
120 x 160 pixels
LCD (STN)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery ? 800 mAh ? 1,430 mAh
Processor ? ? ? 1 GHz Qualcomm Snapdragon S4 MSM8270
RAM ? ? ? 512 MB
Storage ? raw hardware ? raw hardware ? raw hardware 8 GB
Main Camera - 1 megapixel - 5 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? - 720p HD
Front Camera - - - -
Weight 3.49 oz
(99g)
2.47 oz
(70g)
3.56 oz
(101g)
4.39 oz
(124g)
Dimensions 4.17" x 1.57" x 0.59"
(106 x 40 x 15 mm)
4.45" x 1.97" x 0.33"
(113 x 50 x 8.4 mm)
3.5" x 1.87" x 0.83"
(89 x 47 x 21.1 mm)
4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
Form Factor Slab Slab Clamshell Slab
Platform / OS (proprietary) (proprietary) (proprietary) Windows
Network Bands

GSM: 1900

CDMA: 850, 1900

GSM: 850, 1900

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

Data Technology - EVDO r0 GPRS HSPA+ 21
Features 
GPS / Location - Yes - n/a
Accessibility
Hearing Aid Compatible - Yes
M3, T3 (mostly tele-coil compatible)
- Yes
M3, T4 (very tele-coil compatible)
Multiple Languages Yes Yes Yes n/a
TTY/TDD (Digital) - Yes - Yes
Alerts
Extra Display - - Yes -
Ringer Profiles Yes - - -
Connectivity
Bluetooth - Yes - Yes
Mobile Hotspot - - - n/a
USB - - - Yes
Wi-Fi - - - Yes
Contacts
Picture ID - Yes - n/a
Ringer ID - - Yes n/a
Voice Dialing Yes Yes Yes n/a
Customization
Changeable Body Plates - - Yes -
Custom Graphics Yes Yes Yes n/a
Custom Ringtones Yes Yes Yes n/a
Real-Music Ringers - - - n/a
Data & Network
Data Tethering Yes - Yes n/a
WAP / Web Browser Yes Yes Yes n/a
Input
Predictive Text Entry Yes Yes Yes n/a
Side Keys - Yes Yes Yes
Touch Screen - - - Yes
Capacitive
Memory
Memory Card Slot - Yes - Yes
Messaging
Email Client - - Yes n/a
EMS / Picture Messaging - - Yes n/a
Instant Messaging - - - n/a
MMS - Yes - n/a
Text Messaging Templates Yes - Yes n/a
Music
Headphone Jack (3.5mm) - - - Yes
Music Player - Yes - n/a
Stereo Speakers - Yes - -
Productivity
Alarm Yes Yes Yes n/a
Calculator Yes Yes Yes n/a
Calendar Yes Yes Yes n/a
To-Do List - - - n/a
Voice Memo Yes Yes Yes n/a
Software
BREW - Yes - n/a
Games Yes Yes Yes n/a
Java (J2ME) - - Yes n/a
Voice
Headset Jack (2.5 mm) Yes - Yes n/a
Speaker Phone - Yes - Yes
  Motorola T191 Samsung Wafer R510 Motorola T720 / T721 (GSM) Nokia Lumia 521 / 520
  X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Motorola T191 Samsung Wafer R510 Motorola T720 / T721 (GSM) Nokia Lumia 521 / 520

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