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Phone BLU S1 Samsung SGH-X640 Samsung SCH-A990 Alcatel Idol 4S Motorola Droid Ultra
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Not yet released Released Released Not yet released Released
Specifications 
Display Size 5.2" diag.
16 : 9
? ? 5.5" diag.
16 : 9
5" diag.
16 : 9
Display Resolution & Type 720 x 1280 pixels
(~282 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
AMOLED
720 x 1280 pixels
(~294 ppi)
AMOLED
Display Refresh 60 Hz ? ? 60 Hz 60 Hz
Battery 2,800 mAh 800 mAh 1,000 mAh 3,000 mAh 2,130 mAh
Processor 1.5 GHz MediaTek 6750 ? ? 1.8 GHz Qualcomm Snapdragon 652 (MSM8976) 1.7 GHz Qualcomm Snapdragon S4 Pro MSM8960T
RAM 2 GB ? ? 3 GB 2 GB
Storage 16 GB ? raw hardware ? raw hardware 32 GB 16 GB
Main Camera 13 megapixel Yes 3 megapixel 16 megapixel 10 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 1080p HD - ? 4K UHD 1080p HD
Front Camera 5 megapixel - - 8 megapixel 2 megapixel
Weight 4.83 oz
(137g)
3 oz
(85g)
4.4 oz
(125g)
5.26 oz
(149g)
4.83 oz
(137g)
Dimensions 5.8" x 2.87" x 0.33"
(147 x 73 x 8.4 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
6.06" x 2.97" x 0.28"
(154 x 75 x 7 mm)
5.41" x 2.8" x 0.28"
(137 x 71 x 7.2 mm)
Form Factor Slab Clamshell Clamshell Slab Slab
Platform / OS Android (proprietary) (proprietary) Android Android
Network Bands

4G LTE: 2, 3, 4, 5, 7, 12, 17, 25, 26, 41

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

4G LTE: 2, 4, 5, 7, 12, 17

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

4G LTE: 4, 13

WCDMA: 1, 2, 5, 8

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 6) GPRS EVDO r0 LTE (Cat 4) LTE (Cat 3)
Features 
Fingerprint Reader Yes
stand-alone
- - Yes * -
Flashlight Yes - Yes Yes -
GPS / Location n/a - Yes n/a n/a
Accessibility
Adjustable Text Size n/a - - n/a n/a
Hearing Aid Compatible - - Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T4 (very tele-coil compatible)
Multiple Languages n/a Yes Yes n/a n/a
TTY/TDD (Digital) Yes - Yes Yes Yes
Alerts
Extra Display - - Yes - -
Connectivity
Bluetooth Yes - Yes Yes Yes
Mobile Hotspot n/a - - n/a n/a
NFC - - - Yes Yes
USB Yes
Micro-USB
- Yes Yes
Micro-USB
Yes
Micro-USB
Wi-Fi Yes
4 (802.11 b,g,n)
- - Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 a,b,g,n)
Contacts
Picture ID n/a Yes Yes n/a n/a
Ringer ID n/a Yes Yes n/a n/a
Voice Dialing n/a - Yes n/a n/a
Customization
Custom Graphics n/a Yes Yes n/a n/a
Custom Ringtones n/a Yes 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
Dual-SIM - - - Yes * -
WAP / Web Browser n/a Yes Yes n/a n/a
Input
Predictive Text Entry n/a Yes Yes n/a n/a
Side Keys Yes Yes Yes Yes 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 n/a Yes Yes n/a n/a
Instant Messaging n/a - - n/a n/a
MMS n/a Yes Yes n/a n/a
Text Messaging Templates n/a Yes Yes n/a n/a
Music
FM Radio Yes - - - -
Headphone Jack (3.5mm) Yes - - Yes Yes
Music Player n/a - Yes n/a n/a
Stereo Speakers - - Yes Yes -
Photo & Video
Miracast - - - Yes Yes
TV Output - - Yes - -
Power
Fast Charging - - - Yes -
Productivity
Alarm n/a Yes Yes n/a n/a
Calculator n/a Yes Yes n/a n/a
Calendar n/a Yes Yes n/a n/a
To-Do List n/a Yes - n/a n/a
Voice Memo n/a Yes Yes n/a n/a
Software
BREW n/a - Yes n/a n/a
Games n/a Yes Yes n/a n/a
Java (J2ME) n/a Yes - n/a n/a
Voice
HD Voice Yes - - Yes -
Headset Jack (2.5 mm) n/a Yes - n/a n/a
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  BLU S1 Samsung SGH-X640 Samsung SCH-A990 Alcatel Idol 4S Motorola Droid Ultra
  X > < X > < X > < X > < X

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

 
Phone BLU S1 Samsung SGH-X640 Samsung SCH-A990 Alcatel Idol 4S Motorola Droid Ultra

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