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Phone ZTE Z331 BlackBerry Z10 (CDMA) Sony Xperia XZ2 Nokia 6310i Samsung SGH-T819
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Not yet released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
4.2" diag.
5 : 3
5.7" diag.
18 : 9
? ?
Display Resolution & Type 176 x 220 pixels
(~117 ppi)
LCD (TFT/TFD)
768 x 1280 pixels
(~355 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~424 ppi)
LCD (TFT/TFD)
96 x 65 pixels 176 x 220 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ? ?
Battery 950 mAh 1,800 mAh 3,180 mAh ? ?
Processor ? 1.5 GHz Qualcomm Snapdragon S4 Qualcomm Snapdragon 845 ? ?
RAM ? 2 GB 4 GB ? ?
Storage ? raw hardware 16 GB 64 GB ? raw hardware ? raw hardware
Main Camera 3 megapixel 8 megapixel 19 megapixel - 1 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture QCIF (176 x 144) 1080p HD 4K UHD - QCIF (176 x 144)
Front Camera - 2 megapixel 5 megapixel - -
Weight 4 oz
(113g)
4.78 oz
(135g)
6.98 oz
(198g)
3.92 oz
(111g)
3.46 oz
(98g)
Dimensions 3.84" x 2.02" x 0.69"
(98 x 51 x 17.5 mm)
5.12" x 2.58" x 0.35"
(130 x 66 x 9 mm)
6.02" x 2.83" x 0.44"
(153 x 72 x 11.1 mm)
5.08" x 1.85" x 0.75"
(129 x 47 x 19.1 mm)
3.96" x 2.03" x 0.55"
(101 x 52 x 14 mm)
Form Factor Clamshell Slab Slab Slab Slide
Platform / OS (proprietary) BlackBerry 10 Android (proprietary) (proprietary)
Network Bands

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

4G LTE: 13

WCDMA: 1, 8

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 29, 38, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

WCDMA: 4

GSM: 850, 900, 1800, 1900

Data Technology HSDPA 3.6 LTE (Cat 3) LTE (Cat 18) GPRS WCDMA (UMTS)
Features 
Fingerprint Reader - - Yes
stand-alone
- -
Flashlight - - Yes - -
GPS / Location Yes n/a n/a Yes -
Water-Resistant - - Yes
IPX5 (direct spray)
- -
Accessibility
Adjustable Text Size - n/a n/a - -
Hearing Aid Compatible Yes - Yes - -
Multiple Languages Yes n/a n/a Yes Yes
TTY/TDD (Digital) Yes Yes - - -
Alerts
Extra Display Yes - - - -
Ringer Profiles Yes Yes - Yes Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - - - Yes -
Mobile Hotspot - n/a n/a - -
NFC - Yes Yes - -
USB Yes
Micro-USB
Yes
Micro-USB
Yes
USB Type C
- Yes
Wi-Fi - Yes
4 (802.11 a,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- -
Contacts
Picture ID Yes n/a n/a Yes Yes
Ringer ID Yes n/a n/a Yes Yes
Voice Dialing - n/a n/a Yes Yes
Customization
Custom Graphics Yes n/a n/a - Yes
Custom Ringtones Yes n/a n/a Yes Yes
Real-Music Ringers Yes n/a n/a - Yes
Data & Network
Data Tethering Yes n/a n/a Yes 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 - Yes
Messaging
Email Client Yes n/a n/a - -
EMS / Picture Messaging - n/a n/a Yes Yes
Instant Messaging Yes 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 - - -
Music Player Yes n/a n/a - Yes
Stereo Speakers - - Yes - -
Photo & Video
DLNA - Yes Yes - -
Miracast - - Yes - -
TV Output - Yes - - -
Power
Fast Charging - - Yes - -
Wireless 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 - n/a n/a Yes 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 Yes
Voice
HD Voice - - Yes - -
Speaker Phone Yes Yes Yes - Yes
  ZTE Z331 BlackBerry Z10 (CDMA) Sony Xperia XZ2 Nokia 6310i Samsung SGH-T819
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone ZTE Z331 BlackBerry Z10 (CDMA) Sony Xperia XZ2 Nokia 6310i Samsung SGH-T819

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