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Phone Samsung SCH-A570 HTC G2 Nokia Lumia 900 Samsung SGH-X640
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 3.7" diag.
5 : 3
4.3" diag.
5 : 3
?
Display Resolution & Type 128 x 160 pixels
LCD (STN)
480 x 800 pixels
(~252 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~217 ppi)
AMOLED
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ?
Battery ? 1,300 mAh 1,830 mAh 800 mAh
Processor ? 800 MHz Qualcomm S2 MSM7230 1.4 GHz Qualcomm S2 APQ8055 ?
RAM ? ? 512 MB ?
Storage ? raw hardware ? raw hardware 16 GB ? raw hardware
Main Camera - 5 megapixel 8 megapixel Yes
Wide Camera - - - -
Tele Camera - - - -
Video Capture - 720p HD 720p HD -
Front Camera - - 1 megapixel -
Weight 3.6 oz
(102g)
6.5 oz
(184g)
5.6 oz
(159g)
3 oz
(85g)
Dimensions 3.3" x 1.8" x 0.9"
(84 x 46 x 22.9 mm)
4.68" x 2.37" x 0.55"
(119 x 60 x 14 mm)
5.03" x 2.7" x 0.45"
(128 x 69 x 11.4 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Clamshell Slab Slab Clamshell
Platform / OS (proprietary) Android Windows (proprietary)
Network Bands

CDMA: 850, 1900

WCDMA: 1, 4

GSM: 850, 900, 1800, 1900

4G LTE: 4, 17

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

*

GSM: 900, 1800, 1900

Data Technology 1xRTT HSPA 14.4 LTE (Cat 3) GPRS
Features 
GPS / Location Yes n/a n/a -
Accessibility
Hearing Aid Compatible - Yes
M3 (mostly compatible)
Yes
M3, T4 (very tele-coil compatible)
-
Multiple Languages Yes n/a n/a Yes
TTY/TDD (Digital) Yes - Yes -
Alerts
Extra Display Yes - - -
Connectivity
Bluetooth - Yes Yes -
Mobile Hotspot - n/a n/a -
USB - Yes Yes
Micro-USB
-
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes -
Contacts
Picture ID - n/a n/a Yes
Ringer ID - n/a n/a Yes
Voice Dialing Yes n/a n/a -
Customization
Custom Graphics Yes n/a n/a Yes
Custom Ringtones Yes n/a n/a Yes
Real-Music Ringers - n/a n/a -
Data & Network
WAP / Web Browser Yes n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - -
Touch Screen - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - Yes - -
Messaging
Email Client - n/a n/a -
EMS / Picture Messaging Yes n/a n/a Yes
Instant Messaging - n/a n/a -
MMS - n/a n/a Yes
Text Messaging Templates Yes n/a n/a Yes
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) - Yes Yes -
Music Player - n/a n/a -
Productivity
Alarm Yes n/a n/a Yes
Calculator Yes n/a n/a Yes
Calendar Yes n/a n/a Yes
To-Do List Yes n/a n/a Yes
Voice Memo Yes n/a n/a Yes
Software
BREW Yes n/a n/a -
Games Yes n/a n/a Yes
Java (J2ME) - n/a n/a Yes
Voice
Headset Jack (2.5 mm) Yes n/a n/a Yes
Speaker Phone - Yes Yes Yes
  Samsung SCH-A570 HTC G2 Nokia Lumia 900 Samsung SGH-X640
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Phone Samsung SCH-A570 HTC G2 Nokia Lumia 900 Samsung SGH-X640

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