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Phone Ericsson T66 Nokia Lumia 635 (CDMA) Samsung Galaxy Grand Prime (CDMA) ZTE Z221 Apple iPhone 4S
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 4.5" diag.
16 : 9
5" diag.
16 : 9
2" diag.
4 : 3
3.5" diag.
5 : 3
Display Resolution & Type ? 480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
540 x 960 pixels
(~220 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
640 x 960 pixels
(~330 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ? 60 Hz
Battery ? 1,830 mAh 2,600 mAh 900 mAh ?
Processor ? 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) 1.2 GHz Qualcomm Snapdragon 410 (MSM8916) ? Apple A5
RAM ? 512 MB 1.5 GB ? ?
Storage ? raw hardware 8 GB 8 GB 142 MB 64 GB *
Main Camera - 5 megapixel 8 megapixel Yes 8 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - 720p HD 1080p HD QCIF (176 x 144) 1080p HD
Front Camera - - 5 megapixel - Yes
Weight 2.08 oz
(59g)
4.73 oz
(134g)
5.5 oz
(156g)
3.24 oz
(92g)
4.9 oz
(139g)
Dimensions 3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
5.1" x 2.63" x 0.36"
(130 x 67 x 9.1 mm)
5.7" x 2.84" x 0.34"
(145 x 72 x 8.6 mm)
3.76" x 1.92" x 0.73"
(96 x 49 x 18.5 mm)
4.5" x 2.31" x 0.37"
(114 x 59 x 9.4 mm)
Form Factor Slab Slab Slab Clamshell Slab
Platform / OS (proprietary) Windows Android (proprietary) iOS
Network Bands

GSM: 900, 1800, 1900

4G LTE: 25, 26, 41

WCDMA: 1, 2, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 25, 26, 41

CDMA: 800, 850, 1900

*

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

WCDMA: 1, 2, 5, 8

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology - LTE (Cat 3) LTE (Cat 4) HSDPA 3.6 HSPA 14.4
Features 
Flashlight - - Yes - -
GPS / Location - n/a n/a Yes n/a
Accessibility
Adjustable Text Size - n/a n/a - n/a
Hearing Aid Compatible - Yes Yes Yes Yes
Multiple Languages Yes n/a n/a Yes n/a
TTY/TDD (Digital) - Yes 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
Mobile Hotspot - n/a n/a - n/a
NFC - - Yes - -
USB - Yes
Micro-USB
Yes
Micro-USB
Yes Yes
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
- Yes
4 (802.11 b,g,n)
Contacts
Picture ID - n/a n/a - n/a
Ringer ID - n/a n/a - n/a
Voice Dialing - n/a n/a - n/a
Customization
Custom Graphics Yes n/a n/a Yes n/a
Custom Ringtones Yes n/a n/a Yes n/a
Real-Music Ringers - n/a n/a Yes n/a
Data & Network
Data Tethering - n/a n/a - n/a
WAP / Web Browser Yes n/a n/a Yes n/a
Input
Predictive Text Entry Yes n/a n/a Yes n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen - Yes Yes - Yes
Memory
Memory Card Slot - Yes Yes - -
Messaging
Email Client - n/a n/a Yes n/a
EMS / Picture Messaging Yes n/a n/a - n/a
Instant Messaging - n/a n/a Yes n/a
MMS - n/a n/a Yes n/a
Text Messaging Templates Yes n/a n/a Yes n/a
Music
FM Radio - Yes Yes - -
Headphone Jack (3.5mm) - Yes Yes - Yes
Music Player - n/a n/a - n/a
Photo & Video
DLNA - Yes - - -
TV Output - - - - Yes
Productivity
Alarm Yes n/a n/a Yes n/a
Calculator Yes n/a n/a Yes n/a
Calendar Yes n/a n/a Yes n/a
To-Do List Yes n/a n/a - n/a
Voice Memo - n/a n/a Yes n/a
Software
Games Yes n/a n/a Yes n/a
Java (J2ME) - n/a n/a Yes n/a
Voice
HD Voice - - Yes - -
Speaker Phone - Yes Yes Yes Yes
  * Some versions only
  Ericsson T66 Nokia Lumia 635 (CDMA) Samsung Galaxy Grand Prime (CDMA) ZTE Z221 Apple iPhone 4S
  X > < X > < X > < X > < X

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

 
Phone Ericsson T66 Nokia Lumia 635 (CDMA) Samsung Galaxy Grand Prime (CDMA) ZTE Z221 Apple iPhone 4S

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