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Phone Samsung SGH-X640 LG Optimus L90 Sony Xperia XZ1 Ericsson T66 Samsung Rugby A837
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 4.7" diag.
16 : 9
5.2" diag.
16 : 9
? 2" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
540 x 960 pixels
(~234 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
? 176 x 220 pixels
(~141 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz 60 Hz ? ?
Battery 800 mAh 2,460 mAh 2,700 mAh ? 1,000 mAh
Processor ? 1.2 GHz Qualcomm Snapdragon 400 MSM8226 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) ? ?
RAM ? 1 GB 4 GB ? ?
Storage ? raw hardware 8 GB 64 GB ? raw hardware ? raw hardware
Main Camera Yes 5 megapixel 19 megapixel - 1 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - 1080p HD 4K UHD - QCIF (176 x 144)
Front Camera - Yes 13 megapixel - -
Weight 3 oz
(85g)
4.37 oz
(124g)
5.5 oz
(156g)
2.08 oz
(59g)
4.66 oz
(132g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.18" x 2.6" x 0.38"
(132 x 66 x 9.7 mm)
5.82" x 2.89" x 0.29"
(148 x 73 x 7.4 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
3.95" x 2.05" x 0.9"
(100 x 52 x 22.9 mm)
Form Factor Clamshell Slab Slab Slab Clamshell
Platform / OS (proprietary) Android Android (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 29, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS HSPA+ 21 LTE (Cat 16) - HSDPA 3.6
Features 
Barometer - - Yes - -
Fingerprint Reader - - Yes *
stand-alone
- -
Flashlight - Yes Yes - -
GPS / Location - n/a n/a - Yes
Ruggedized - - - - Yes
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Adjustable Text Size - n/a n/a - -
Hearing Aid Compatible - Yes Yes - Yes
Multiple Languages Yes n/a n/a Yes Yes
TTY/TDD (Digital) - Yes Yes - Yes
Alerts
Extra Display - - - - Yes
Ringer Profiles - - - Yes -
Connectivity
Bluetooth - Yes Yes - Yes
Infrared (IR) - Yes - - -
Mobile Hotspot - n/a n/a - -
NFC - - Yes - -
USB - Yes Yes
USB Type C
- Yes
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- -
Contacts
Picture ID Yes n/a n/a - Yes
Ringer ID Yes n/a n/a - Yes
Voice Dialing - n/a n/a - -
Customization
Custom Graphics Yes n/a n/a Yes Yes
Custom Ringtones Yes n/a n/a Yes Yes
Real-Music Ringers - n/a n/a - Yes
Data & Network
Data Tethering - n/a n/a - Yes
Dual-SIM - - Yes * - -
WAP / Web Browser Yes n/a n/a Yes Yes
Input
Predictive Text Entry Yes n/a n/a Yes Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen - Yes Yes - -
Memory
Memory Card Slot - Yes Yes - Yes
Messaging
Email Client - n/a n/a - Yes
EMS / Picture Messaging Yes n/a n/a Yes -
Instant Messaging - n/a n/a - Yes
MMS Yes n/a n/a - Yes
Text Messaging Templates Yes n/a n/a Yes Yes
Music
Headphone Jack (3.5mm) - Yes Yes - -
Music Player - n/a n/a - Yes
Stereo Speakers - - Yes - -
Photo & Video
DLNA - - Yes - -
Miracast - - Yes - -
Power
Fast Charging - - Yes - -
Productivity
Alarm Yes n/a n/a Yes Yes
Calculator Yes n/a n/a Yes Yes
Calendar Yes n/a n/a Yes Yes
To-Do List Yes n/a n/a Yes -
Voice Memo Yes n/a n/a - Yes
Software
Games Yes n/a n/a Yes Yes
Java (J2ME) Yes n/a n/a - Yes
Voice
HD Voice - - Yes - -
Headset Jack (2.5 mm) Yes n/a n/a - -
Push-To-Talk - - - - Yes
Speaker Phone Yes Yes Yes - Yes
  * Some versions only
  Samsung SGH-X640 LG Optimus L90 Sony Xperia XZ1 Ericsson T66 Samsung Rugby A837
  X > < X > < X > < X > < X

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

 
Phone Samsung SGH-X640 LG Optimus L90 Sony Xperia XZ1 Ericsson T66 Samsung Rugby A837

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