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Phone Samsung SGH-X640 BLU Life One X3 Nokia Lumia 635 (CDMA) BlackBerry Pearl 8110 TCL 20 SE
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 5.5" diag.
16 : 9
4.5" diag.
16 : 9
? 6.8" diag.
20.5 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
1080 x 1920 pixels
(~401 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
240 x 260 pixels
LCD (TFT/TFD)
720 x 1640 pixels
(~263 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ? 60 Hz
Battery 800 mAh 5,000 mAh 1,830 mAh ? 5,000 mAh
Processor ? 1.3 GHz MediaTek 6753 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) ? 1.6 GHz Qualcomm Snapdragon 460
RAM ? 3 GB 512 MB ? 4 GB
Storage ? raw hardware 32 GB 8 GB ? raw hardware 128 GB
Main Camera Yes 13 megapixel 5 megapixel 2 megapixel 48 megapixel
Wide Camera - - - - 5 megapixel
Tele Camera - - - - -
Video Capture - 1080p HD 720p HD ? 1080p HD
Front Camera - 13 megapixel - - 13 megapixel
Weight 3 oz
(85g)
6.42 oz
(182g)
4.73 oz
(134g)
3.2 oz
(91g)
7.31 oz
(207g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
6.02" x 2.97" x 0.35"
(153 x 75 x 8.9 mm)
5.1" x 2.63" x 0.36"
(130 x 67 x 9.1 mm)
4.2" x 1.97" x 0.55"
(107 x 50 x 14 mm)
6.78" x 3.04" x 0.35"
(172 x 77 x 8.9 mm)
Form Factor Clamshell Slab Slab Slab Slab
Platform / OS (proprietary) Android Windows BlackBerry OS Android
Network Bands

GSM: 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 7, 12, 17, 28

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 25, 26, 41

WCDMA: 1, 2, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 26, 28, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology GPRS LTE (Cat 4) LTE (Cat 3) EDGE LTE (Cat 4)
Features 
Fingerprint Reader - Yes
stand-alone
- - Yes
stand-alone
Flashlight - Yes - - Yes
GPS / Location - n/a n/a n/a n/a
Accessibility
Adjustable Text Size - n/a n/a n/a n/a
Hearing Aid Compatible - - Yes - Yes
Multiple Languages Yes n/a n/a n/a n/a
TTY/TDD (Digital) - Yes Yes - Yes
Alerts
Ringer Profiles - - - Yes -
Connectivity
Bluetooth - Yes Yes Yes Yes
Mobile Hotspot - n/a n/a n/a n/a
USB - Yes
Micro-USB
Yes
Micro-USB
Yes Yes
USB Type C
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 Yes n/a n/a n/a n/a
Ringer ID Yes n/a n/a n/a n/a
Voice Dialing - n/a n/a n/a n/a
Customization
Custom Graphics Yes n/a n/a n/a n/a
Custom Ringtones Yes n/a n/a n/a n/a
Real-Music Ringers - n/a n/a n/a n/a
Data & Network
Data Tethering - n/a n/a n/a n/a
Dual-SIM - Yes - - -
WAP / Web Browser Yes n/a n/a n/a n/a
Input
Predictive Text Entry Yes n/a n/a n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes -
Touch Screen - Yes Yes - Yes
Memory
Memory Card Slot - Yes Yes Yes Yes
Messaging
Email Client - n/a n/a n/a n/a
EMS / Picture Messaging Yes n/a n/a n/a n/a
Instant Messaging - n/a n/a n/a n/a
MMS Yes n/a n/a n/a n/a
Text Messaging Templates Yes n/a n/a n/a n/a
Music
FM Radio - Yes Yes - Yes
Headphone Jack (3.5mm) - Yes Yes Yes Yes
Music Player - n/a n/a n/a n/a
Photo & Video
DLNA - - Yes - -
Power
Fast Charging - Yes - - -
Productivity
Alarm Yes n/a n/a n/a n/a
Calculator Yes n/a n/a n/a n/a
Calendar Yes n/a n/a n/a n/a
To-Do List Yes n/a n/a n/a n/a
Voice Memo Yes n/a n/a n/a n/a
Software
Games Yes n/a n/a n/a n/a
Java (J2ME) Yes n/a n/a n/a n/a
Voice
HD Voice - - - - Yes
Headset Jack (2.5 mm) Yes n/a n/a n/a n/a
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Samsung SGH-X640 BLU Life One X3 Nokia Lumia 635 (CDMA) BlackBerry Pearl 8110 TCL 20 SE
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X640 BLU Life One X3 Nokia Lumia 635 (CDMA) BlackBerry Pearl 8110 TCL 20 SE

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