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Phone Ericsson T66 Nokia Lumia 635 (CDMA) Samsung SCH-A990 Palm Pre Plus (GSM) T-Mobile REVVL 4
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 4.5" diag.
16 : 9
? 3.1" diag.
5 : 3
6.2" diag.
19 : 9
Display Resolution & Type ? 480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
320 x 480 pixels
(~186 ppi)
LCD (TFT/TFD)
720 x 1520 pixels
(~270 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ? 60 Hz
Battery ? 1,830 mAh 1,000 mAh 1,150 mAh 3,500 mAh
Processor ? 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) ? ? 2 GHz MediaTek Helio A22 (MT6761)
RAM ? 512 MB ? ? 2 GB
Storage ? raw hardware 8 GB ? raw hardware ? raw hardware 32 GB
Main Camera - 5 megapixel 3 megapixel 3 megapixel 13 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - 720p HD ? VGA (640 x 480) 1080p HD
Front Camera - - - - 5 megapixel
Weight 2.08 oz
(59g)
4.73 oz
(134g)
4.4 oz
(125g)
4.89 oz
(139g)
5.59 oz
(158g)
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)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
3.9" x 2.3" x 0.67"
(99 x 58 x 17 mm)
6.26" x 2.99" x 0.32"
(159 x 76 x 8.1 mm)
Form Factor Slab Slab Clamshell Slide Slab
Platform / OS (proprietary) Windows (proprietary) webOS Android
Network Bands

GSM: 900, 1800, 1900

4G LTE: 25, 26, 41

WCDMA: 1, 2, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 7, 12, 25, 26, 41, 66, 71

WCDMA: 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology - LTE (Cat 3) EVDO r0 HSDPA 1.8 LTE (Cat 6)
Features 
Fingerprint Reader - - - - Yes
stand-alone
Flashlight - - Yes - Yes
GPS / Location - n/a Yes n/a n/a
Accessibility
Hearing Aid Compatible - Yes
M3, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
- Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes n/a Yes n/a n/a
TTY/TDD (Digital) - Yes Yes Yes Yes
Alerts
Extra Display - - Yes - -
Ringer Profiles Yes - - - -
Connectivity
Bluetooth - Yes Yes Yes Yes
Mobile Hotspot - n/a - n/a n/a
USB - Yes
Micro-USB
Yes Yes
Micro-USB
Yes
USB Type C
Wi-Fi - Yes
4 (802.11 b,g,n)
- Yes
802.11 b,g
Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID - n/a Yes n/a n/a
Ringer ID - n/a Yes n/a n/a
Voice Dialing - n/a Yes n/a n/a
Customization
Custom Graphics Yes n/a Yes n/a n/a
Custom Ringtones Yes n/a Yes n/a n/a
Real-Music Ringers - n/a Yes n/a n/a
Data & Network
Data Tethering - n/a Yes n/a n/a
WAP / Web Browser Yes n/a Yes n/a n/a
Input
Predictive Text Entry Yes n/a Yes n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes -
Touch Screen - Yes
Capacitive
- Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - Yes Yes - Yes
Messaging
Email Client - n/a - n/a n/a
EMS / Picture Messaging Yes n/a Yes n/a n/a
Instant Messaging - n/a - n/a n/a
MMS - n/a Yes n/a n/a
Text Messaging Templates Yes n/a Yes n/a n/a
Music
FM Radio - Yes - - Yes
Headphone Jack (3.5mm) - Yes - Yes Yes
Music Player - n/a Yes n/a n/a
Stereo Speakers - - Yes - -
Photo & Video
DLNA - Yes - - -
TV Output - - Yes - -
Productivity
Alarm Yes n/a Yes n/a n/a
Calculator Yes n/a Yes n/a n/a
Calendar Yes n/a Yes n/a n/a
To-Do List Yes n/a - n/a n/a
Voice Memo - n/a Yes n/a n/a
Software
BREW - n/a Yes n/a n/a
Games Yes n/a Yes n/a n/a
Voice
HD Voice - - - - Yes
Speaker Phone - Yes Yes Yes Yes
  * Some versions only
  Ericsson T66 Nokia Lumia 635 (CDMA) Samsung SCH-A990 Palm Pre Plus (GSM) T-Mobile REVVL 4
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T66 Nokia Lumia 635 (CDMA) Samsung SCH-A990 Palm Pre Plus (GSM) T-Mobile REVVL 4

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