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Phone ZTE Z998 / Unico LTE Motorola Moto X4 Motorola Defy (2010) Kyocera DuraXV Extreme / Extreme+ Apple iPhone 4 (GSM)
Current U.S. Carriers (none) (none) (none) Verizon (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 4.5" diag.
16 : 9
5.2" diag.
16 : 9
3.6" diag.
16 : 9
2.6" diag.
4 : 3
3.5" diag.
5 : 3
Display Resolution & Type 540 x 960 pixels
(~245 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
480 x 854 pixels
(~272 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~154 ppi)
LCD (TFT/TFD)
640 x 960 pixels
(~330 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz 60 Hz ? 60 Hz
Battery 2,070 mAh 3,000 mAh 1,540 mAh 1,770 mAh ?
Processor 1.2 GHz Qualcomm Snapdragon 400 MSM8930 2.2 GHz Qualcomm Snapdragon 630 800 MHz TI OMAP3610 2 GHz MediaTek Helio A22 (6761) Apple A4
RAM 1 GB 3 GB ? 2 GB ?
Storage 4 GB 32 GB ? raw hardware 16 GB 32 GB *
Main Camera 5 megapixel 12 megapixel 5 megapixel 5 megapixel 5 megapixel
Wide Camera - 8 megapixel - - -
Tele Camera - - - - -
Video Capture 720p HD 4K UHD ? 720p HD 720p HD
Front Camera 1 megapixel 16 megapixel - - Yes
Weight 4.8 oz
(136g)
5.75 oz
(163g)
4.16 oz
(118g)
6.8 oz
(193g)
4.8 oz
(136g)
Dimensions 5.2" x 2.6" x 0.4"
(132 x 66 x 10.2 mm)
5.84" x 2.89" x 0.31"
(148 x 73 x 8 mm)
4.21" x 2.32" x 0.53"
(107 x 59 x 13.4 mm)
4.36" x 2.22" x 1.07"
(111 x 56 x 27.2 mm)
4.5" x 2.31" x 0.37"
(114 x 59 x 9.4 mm)
Form Factor Slab Slab Slab Clamshell Slab
Platform / OS Android Android Android (proprietary) iOS
Network Bands

4G LTE: 2, 4, 5, 17

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

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

WCDMA: 1, 2, 4, 5, 8

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

WCDMA: 1, 4, 5

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 12, 13

WCDMA: 1, 2, 5

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 3) LTE (Cat 11) HSPA 7.2 LTE (Cat 4) HSPA 7.2
Features 
Barometer - - - Yes * -
Fingerprint Reader - Yes
stand-alone
- - -
Flashlight - Yes - Yes -
GPS / Location n/a n/a n/a Yes n/a
Ruggedized - - Yes Yes -
Water-Resistant - Yes
IPX8 (SCUBA)
- Yes
IPX8 (SCUBA)
-
Accessibility
Adjustable Text Size n/a n/a n/a Yes n/a
Hearing Aid Compatible Yes
M3, T4 (very tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
- Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages n/a n/a n/a Yes n/a
TTY/TDD (Digital) Yes Yes Yes Yes Yes
Alerts
Extra Display - - - Yes -
Connectivity
Bluetooth Yes Yes Yes Yes Yes
Mobile Hotspot n/a n/a n/a Yes n/a
NFC - Yes - - -
USB Yes
Micro-USB
Yes
USB Type C
Yes
Micro-USB
Yes
USB Type C
Yes
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)
Yes
5 (802.11 a,ac,b,g,n)
Yes
4 (802.11 b,g,n)
Contacts
Picture ID n/a n/a n/a Yes n/a
Ringer ID n/a n/a n/a Yes n/a
Voice Dialing n/a n/a n/a Yes n/a
Customization
Custom Graphics n/a n/a n/a Yes n/a
Custom Ringtones n/a n/a n/a Yes n/a
Real-Music Ringers n/a n/a n/a Yes n/a
Data & Network
Data Tethering n/a n/a n/a Yes n/a
WAP / Web Browser n/a n/a n/a Yes n/a
Input
Predictive Text Entry n/a n/a n/a Yes n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot Yes Yes Yes Yes -
Messaging
Email Client n/a n/a n/a Yes n/a
Instant Messaging n/a n/a n/a - n/a
MMS n/a n/a n/a Yes n/a
Text Messaging Templates n/a n/a n/a Yes n/a
Music
FM Radio - - Yes Yes -
Headphone Jack (3.5mm) Yes Yes Yes Yes Yes
Music Player n/a n/a n/a Yes n/a
Photo & Video
DLNA - - Yes - -
TV Output - - - - Yes
Power
Fast Charging - Yes - - -
Productivity
Alarm n/a n/a n/a Yes n/a
Calculator n/a n/a n/a Yes n/a
Calendar n/a n/a n/a Yes n/a
Voice Memo n/a n/a n/a Yes n/a
Software
Games n/a n/a n/a - n/a
Voice
HD Voice - Yes - Yes -
Push-To-Talk - - - Yes -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  ZTE Z998 / Unico LTE Motorola Moto X4 Motorola Defy (2010) Kyocera DuraXV Extreme / Extreme+ Apple iPhone 4 (GSM)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone ZTE Z998 / Unico LTE Motorola Moto X4 Motorola Defy (2010) Kyocera DuraXV Extreme / Extreme+ Apple iPhone 4 (GSM)

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