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Phone ZTE Z998 / Unico LTE Sony Ericsson K850 Ericsson R278d
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size 4.5" diag.
16 : 9
2.2" diag.
4 : 3
?
Display Resolution & Type 540 x 960 pixels
(~245 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
101 x 40 pixels
Display Refresh 60 Hz ? ?
Battery 2,070 mAh ? ?
Processor 1.2 GHz Qualcomm Snapdragon 400 MSM8930 ? ?
RAM 1 GB ? ?
Storage 4 GB ? raw hardware ? raw hardware
Main Camera 5 megapixel 5 megapixel -
Wide Camera - - -
Tele Camera - - -
Video Capture 720p HD ? -
Front Camera 1 megapixel - -
Weight 4.8 oz
(136g)
4.2 oz
(119g)
9.28 oz
(263g)
Dimensions 5.2" x 2.6" x 0.4"
(132 x 66 x 10.2 mm)
4" x 1.9" x 0.7"
(102 x 48 x 17.8 mm)
5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
Form Factor Slab Slab Slab
Platform / OS Android (proprietary) (proprietary)
Network Bands

4G LTE: 2, 4, 5, 17

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

TDMA: 850, 1900

AMPS: 850

Data Technology LTE (Cat 3) HSDPA 3.6 -
Features 
GPS / Location n/a - -
Accessibility
Adjustable Text Size n/a - -
Hearing Aid Compatible Yes
M3, T4 (very tele-coil compatible)
- -
Multiple Languages n/a Yes Yes
TTY/TDD (Digital) Yes Yes -
Alerts
Ringer Profiles - Yes Yes
Connectivity
Bluetooth Yes Yes -
Mobile Hotspot n/a - -
USB Yes
Micro-USB
Yes -
Wi-Fi Yes
4 (802.11 b,g,n)
- -
Contacts
Picture ID n/a Yes -
Ringer ID n/a Yes -
Voice Dialing n/a Yes -
Customization
Custom Graphics n/a Yes -
Custom Ringtones n/a Yes Yes
Real-Music Ringers n/a Yes -
Data & Network
Data Tethering n/a Yes Yes
WAP / Web Browser n/a Yes Yes
Input
Predictive Text Entry n/a Yes Yes
Side Keys Yes Yes Yes
Touch Screen Yes
Capacitive
- -
Memory
Memory Card Slot Yes Yes -
Messaging
Email Client n/a Yes -
Instant Messaging n/a - -
MMS n/a Yes -
Text Messaging Templates n/a Yes -
Music
FM Radio - Yes -
Headphone Jack (3.5mm) Yes - -
Music Player n/a Yes -
Photo & Video
Video Calling n/a Yes * -
Productivity
Alarm n/a Yes Yes
Calculator n/a Yes -
Calendar n/a Yes -
To-Do List n/a Yes -
Voice Memo n/a Yes -
Software
Games n/a Yes -
Java (J2ME) n/a Yes -
Voice
Speaker Phone Yes Yes -
  * Some versions only
  ZTE Z998 / Unico LTE Sony Ericsson K850 Ericsson R278d
  X > < X > < X

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

 
Phone ZTE Z998 / Unico LTE Sony Ericsson K850 Ericsson R278d

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