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Phone ZTE Prelude / Avail 2 Alcatel 665 Alcatel Idol 4S Sony Xperia Z2 Samsung Galaxy S6 (GSM)
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Not yet released Not yet released Released
Specifications 
Display Size 3.5" diag.
5 : 3
1.8" diag.
4 : 3
5.5" diag.
16 : 9
5.2" diag.
16 : 9
5.1" diag.
16 : 9
Display Resolution & Type 320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
AMOLED
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
Display Refresh 60 Hz ? 60 Hz 60 Hz 60 Hz
Battery 1,500 mAh 650 mAh 3,000 mAh 3,200 mAh 2,550 mAh
Processor 1 GHz Qualcomm Snapdragon MSM7225A ? 1.8 GHz Qualcomm Snapdragon 652 (MSM8976) 2.3 GHz Qualcomm Snapdragon 801 MSM8974AB 2.1 GHz Samsung Exynos 7420
RAM 512 MB 16 MB 3 GB 3 GB 3 GB
Storage 4 GB 32 MB 32 GB 16 GB 32 GB *
Main Camera 2 megapixel 2 megapixel 16 megapixel 20 megapixel 16 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture VGA (640 x 480) QCIF (176 x 144) 4K UHD 4K UHD 4K UHD
Front Camera - - 8 megapixel 2 megapixel 5 megapixel
Weight 4.4 oz
(125g)
2.72 oz
(77g)
5.26 oz
(149g)
5.75 oz
(163g)
4.87 oz
(138g)
Dimensions 4.6" x 2.44" x 0.45"
(117 x 62 x 11.4 mm)
3.78" x 1.89" x 0.66"
(96 x 48 x 16.8 mm)
6.06" x 2.97" x 0.28"
(154 x 75 x 7 mm)
5.78" x 2.89" x 0.32"
(147 x 73 x 8.2 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
Form Factor Slab Clamshell Slab Slab Slab
Platform / OS Android (proprietary) Android Android Android
Network Bands

WCDMA: 2, 5

GSM: 850, 1900

GSM: 850, 1900

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

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

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

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 29, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

Data Technology HSPA 7.2 - LTE (Cat 4) LTE (Cat 4) LTE (Cat 6)
Features 
Fingerprint Reader - - Yes * - Yes
Flashlight - - Yes - Yes
GPS / Location n/a - n/a n/a n/a
Ruggedized - - - Yes -
VR-ready - - - - Yes
Water-Resistant - - - Yes
IPX8 (SCUBA)
-
Accessibility
Adjustable Text Size n/a - n/a n/a n/a
Hearing Aid Compatible Yes Yes Yes - Yes
Multiple Languages n/a Yes n/a n/a n/a
TTY/TDD (Digital) Yes - Yes Yes Yes
Alerts
Extra Display - Yes - - -
Ringer Profiles - Yes - - -
Connectivity
Bluetooth Yes Yes Yes Yes Yes
Infrared (IR) - - - - Yes
MirrorLink - - - - Yes
Mobile Hotspot n/a - n/a n/a n/a
NFC - - Yes Yes Yes
USB Yes Yes
Micro-USB
Yes
Micro-USB
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
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID n/a Yes n/a n/a n/a
Ringer ID n/a Yes n/a n/a n/a
Voice Dialing n/a - n/a n/a n/a
Customization
Custom Graphics n/a Yes n/a n/a n/a
Custom Ringtones n/a Yes n/a n/a n/a
Real-Music Ringers n/a Yes n/a n/a n/a
Data & Network
Data Tethering n/a - n/a n/a n/a
Dual-SIM - - Yes * - -
WAP / Web Browser n/a Yes n/a n/a n/a
Input
Predictive Text Entry n/a Yes n/a n/a n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes - Yes Yes Yes
Memory
Memory Card Slot Yes Yes Yes Yes -
Messaging
Email Client n/a - n/a n/a n/a
Instant Messaging n/a Yes n/a n/a n/a
MMS n/a Yes n/a n/a n/a
Text Messaging Templates n/a Yes n/a n/a n/a
Music
FM Radio - Yes - Yes -
Headphone Jack (3.5mm) Yes Yes Yes Yes Yes
Music Player n/a Yes n/a n/a n/a
Stereo Speakers - - Yes - -
Photo & Video
DLNA - - - Yes Yes
Miracast - - Yes Yes Yes
TV Output - - - Yes Yes
Power
Fast Charging - - Yes - Yes
Wireless Charging - - - - Yes
Productivity
Alarm n/a Yes n/a n/a n/a
Calculator n/a Yes n/a n/a n/a
Calendar n/a Yes n/a n/a n/a
To-Do List n/a - n/a n/a n/a
Voice Memo n/a Yes n/a n/a n/a
Software
Games n/a Yes n/a n/a n/a
Java (J2ME) n/a Yes n/a n/a n/a
Voice
HD Voice - - Yes - Yes
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  ZTE Prelude / Avail 2 Alcatel 665 Alcatel Idol 4S Sony Xperia Z2 Samsung Galaxy S6 (GSM)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone ZTE Prelude / Avail 2 Alcatel 665 Alcatel Idol 4S Sony Xperia Z2 Samsung Galaxy S6 (GSM)

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