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Phone Ericsson R278d Samsung SPH-i550 Samsung Gravity TXT ZTE Axon Pro / Axon
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Not yet released Released Not yet released
Specifications 
Display Size ? ? 2.4" diag.
4 : 3
5.5" diag.
16 : 9
Display Resolution & Type 101 x 40 pixels 320 x 320 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~534 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? 60 Hz
Battery ? ? 1,000 mAh 3,000 mAh
Processor ? 200 MHz Motorola MX-1 ? 2 GHz Qualcomm Snapdragon 810 (MSM8994)
RAM ? ? ? 4 GB *
Storage ? raw hardware ? raw hardware ? raw hardware 32 GB *
Main Camera - 1 megapixel 2 megapixel 13 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? QVGA (320 x 240) 4K UHD
Front Camera - - - 8 megapixel
Weight 9.28 oz
(263g)
? 3.95 oz
(112g)
6.1 oz
(173g)
Dimensions 5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
3.46" x 2.34" x 1.1"
(88 x 59 x 27.9 mm)
4.41" x 2.09" x 0.55"
(112 x 53 x 14 mm)
6.06" x 2.9" x 0.37"
(154 x 74 x 9.4 mm)
Form Factor Slab Clamshell Slide Slab
Platform / OS (proprietary) Palm OS (proprietary) Android
Network Bands

TDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

AMPS: 850

WCDMA: 2, 4

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 17, 29, 30

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology - 1xRTT HSPA 7.2 LTE (Cat 6)
Features 
Flashlight - - - Yes
GPS / Location - n/a Yes n/a
Accessibility
Adjustable Text Size - n/a - n/a
Hearing Aid Compatible - - Yes Yes
Multiple Languages Yes n/a Yes n/a
TTY/TDD (Digital) - Yes - Yes
Alerts
Extra Display - Yes - -
Ringer Profiles Yes - Yes -
Connectivity
Bluetooth - - Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - Yes - -
Mobile Hotspot - n/a - n/a
NFC - - - Yes
USB - - Yes
Micro-USB
Yes
Micro-USB
Wi-Fi - - - Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID - n/a Yes n/a
Ringer ID - n/a Yes n/a
Voice Dialing - n/a Yes n/a
Customization
Custom Graphics - n/a Yes n/a
Custom Ringtones Yes n/a Yes n/a
Real-Music Ringers - n/a Yes n/a
Data & Network
Data Tethering Yes n/a - n/a
WAP / Web Browser Yes n/a Yes n/a
Input
Predictive Text Entry Yes n/a Yes n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes -
Touch Screen - Yes - Yes
Memory
Memory Card Slot - Yes Yes -
Messaging
Email Client - n/a Yes n/a
Instant Messaging - n/a Yes n/a
MMS - n/a Yes n/a
Text Messaging Templates - n/a Yes n/a
Music
FM Radio - - - Yes
Headphone Jack (3.5mm) - - Yes Yes
Music Player - n/a Yes n/a
Photo & Video
Miracast - - - Yes
Power
Fast Charging - - - Yes
Productivity
Alarm Yes n/a Yes n/a
Calculator - n/a Yes n/a
Calendar - n/a Yes n/a
To-Do List - n/a - n/a
Voice Memo - n/a Yes n/a
Software
Games - n/a Yes n/a
Java (J2ME) - n/a Yes n/a
Voice
HD Voice - - - Yes
Headset Jack (2.5 mm) - n/a - n/a
Speaker Phone - - Yes Yes
  Ericsson R278d Samsung SPH-i550 Samsung Gravity TXT ZTE Axon Pro / Axon
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Phone Ericsson R278d Samsung SPH-i550 Samsung Gravity TXT ZTE Axon Pro / Axon

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