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Phone BLU Vivo XI Samsung SGH-X640 Sony Xperia XZ1 ZTE Flash Ericsson R520
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Not yet released Released Released Released Released
Specifications 
Display Size 5.9" diag.
19 : 9
? 5.2" diag.
16 : 9
4.5" diag.
16 : 9
?
Display Resolution & Type 720 x 1520 pixels
(~285 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~326 ppi)
LCD (TFT/TFD)
?
Display Refresh 60 Hz ? 60 Hz 60 Hz ?
Battery 3,000 mAh 800 mAh 2,700 mAh 1,780 mAh ?
Processor 2 GHz MediaTek Helio P22 ? 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) 1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960 ?
RAM 3 GB ? 4 GB 1 GB ?
Storage 32 GB ? raw hardware 64 GB 8 GB ? raw hardware
Main Camera 16 megapixel Yes 19 megapixel 12 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture 1080p HD - 4K UHD 1080p HD -
Front Camera 16 megapixel - 13 megapixel 1 megapixel -
Weight 6.6 oz
(187g)
3 oz
(85g)
5.5 oz
(156g)
5.2 oz
(147g)
4.23 oz
(120g)
Dimensions 5.89" x 2.87" x 0.31"
(150 x 73 x 7.9 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.82" x 2.89" x 0.29"
(148 x 73 x 7.4 mm)
5.27" x 2.56" x 0.38"
(134 x 65 x 9.7 mm)
5.12" x 1.97" x 0.63"
(130 x 50 x 16 mm)
Form Factor Slab Clamshell Slab Slab Slab
Platform / OS Android (proprietary) Android Android (proprietary)
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 28, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 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

4G LTE: 25

CDMA: 800, 850, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 6) GPRS LTE (Cat 16) LTE (Cat 3) GPRS
Features 
Barometer - - Yes - -
Fingerprint Reader Yes
stand-alone
- Yes *
stand-alone
- -
Flashlight Yes - Yes - -
GPS / Location n/a - n/a n/a -
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Adjustable Text Size n/a - n/a n/a -
Hearing Aid Compatible - - Yes Yes -
Multiple Languages n/a Yes n/a n/a Yes
TTY/TDD (Digital) - - Yes Yes -
Alerts
Ringer Profiles - - - - Yes
Connectivity
Bluetooth Yes - Yes Yes Yes
Infrared (IR) - - - - Yes
Mobile Hotspot n/a - n/a n/a -
NFC - - Yes Yes -
USB Yes
Micro-USB
- Yes
USB Type C
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 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 - n/a n/a Yes
Customization
Custom Graphics n/a Yes n/a n/a -
Custom Ringtones n/a Yes n/a n/a Yes
Real-Music Ringers n/a - n/a n/a -
Data & Network
Data Tethering n/a - n/a n/a Yes
Dual-SIM Yes - Yes * - -
WAP / Web Browser n/a Yes n/a n/a Yes
Input
Predictive Text Entry n/a Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes - Yes Yes -
Memory
Memory Card Slot Yes - Yes Yes -
Messaging
Email Client n/a - n/a n/a -
EMS / Picture Messaging 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 n/a Yes n/a n/a Yes
Music
FM Radio Yes - - - -
Headphone Jack (3.5mm) Yes - Yes Yes -
Music Player n/a - n/a n/a -
Stereo Speakers - - Yes - -
Photo & Video
DLNA - - Yes - -
Miracast - - Yes - -
Power
Fast Charging Yes - Yes - -
Productivity
Alarm n/a Yes n/a n/a Yes
Calculator n/a Yes n/a n/a Yes
Calendar n/a Yes n/a n/a Yes
To-Do List n/a Yes n/a n/a -
Voice Memo n/a Yes n/a n/a Yes
Software
Games n/a Yes n/a n/a Yes
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 Vivo XI Samsung SGH-X640 Sony Xperia XZ1 ZTE Flash Ericsson R520
  X > < X > < X > < X > < X

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

 
Phone BLU Vivo XI Samsung SGH-X640 Sony Xperia XZ1 ZTE Flash Ericsson R520

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