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Phone Ericsson T39 Samsung SCH-A990 Kyocera DuraForce XD Nubia Red Magic 3 / 3S Samsung SPH-N270 (Matrix Phone)
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 5.7" diag.
16 : 9
6.7" diag.
19.5 : 9
?
Display Resolution & Type ?
LCD (Grayscale)
240 x 320 pixels
LCD (TFT/TFD)
720 x 1280 pixels
(~258 ppi)
LCD (TFT/TFD)
1080 x 2340 pixels
(~388 ppi)
AMOLED
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 90 Hz ?
Battery ? 1,000 mAh 3,700 mAh 5,000 mAh 1,000 mAh
Processor ? ? 1.6 GHz Qualcomm Snapdragon 400 (MSM8928) Qualcomm Snapdragon 855+ ?
RAM ? ? 2 GB 8 GB * ?
Storage ? raw hardware ? raw hardware 16 GB 128 GB * ? raw hardware
Main Camera - 3 megapixel 8 megapixel 48 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - ? 1080p HD 4K UHD -
Front Camera - - 2 megapixel 16 megapixel -
Weight 3.03 oz
(86g)
4.4 oz
(125g)
10.83 oz
(307g)
7.58 oz
(215g)
4.66 oz
(132g)
Dimensions 3.78" x 1.97" x 0.71"
(96 x 50 x 18 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
6.57" x 3.4" x 0.55"
(167 x 86 x 14 mm)
6.76" x 3.09" x 0.38"
(172 x 79 x 9.7 mm)
4.53" x 2.28" x 0.79"
(115 x 58 x 20.1 mm)
Form Factor Flip Clamshell Slab Slab Slide
Platform / OS (proprietary) (proprietary) Android Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

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

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 30, 34, 38, 39, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8, 19

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology GPRS EVDO r0 LTE (Cat 3) LTE (Cat 9) -
Features 
Fingerprint Reader - - - Yes
stand-alone
-
Flashlight - Yes Yes Yes -
GPS / Location - Yes n/a n/a Yes
Ruggedized - - Yes - -
Water-Resistant - - Yes
IPX8 (SCUBA)
- -
Accessibility
Adjustable Text Size - - n/a n/a -
Hearing Aid Compatible - Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
- -
Multiple Languages Yes Yes n/a n/a Yes
TTY/TDD (Digital) - Yes Yes Yes -
Alerts
Extra Display - Yes - - -
Ringer Profiles Yes - - - -
Connectivity
Bluetooth Yes Yes Yes Yes -
Infrared (IR) Yes - - - -
Mobile Hotspot - - n/a n/a -
NFC - - Yes - -
USB - Yes Yes
Micro-USB
Yes
USB Type C
-
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID - Yes n/a n/a Yes
Ringer ID - Yes n/a n/a Yes
Voice Dialing Yes Yes n/a n/a Yes
Customization
Custom Graphics Yes Yes n/a n/a -
Custom Ringtones Yes Yes n/a n/a -
Real-Music Ringers - Yes n/a n/a -
Data & Network
Data Tethering Yes Yes n/a n/a -
Dual-SIM - - - Yes -
WAP / Web Browser Yes Yes n/a n/a -
Input
Predictive Text Entry Yes Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes -
Text Keyboard, Hardware - - - Yes -
Touch Screen - - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot - Yes Yes - -
Messaging
Email Client - - n/a n/a -
EMS / Picture Messaging - Yes n/a n/a -
MMS - Yes n/a n/a -
Text Messaging Templates Yes Yes n/a n/a -
Music
Headphone Jack (3.5mm) - - Yes Yes -
Music Player - Yes n/a n/a -
Stereo Speakers - Yes - Yes -
Photo & Video
Miracast - - Yes - -
TV Output - Yes - Yes -
Power
Fast Charging - - Yes Yes -
Productivity
Alarm Yes Yes n/a n/a Yes
Calculator Yes Yes n/a n/a Yes
Calendar Yes Yes n/a n/a Yes
To-Do List - - n/a n/a Yes
Voice Memo Yes Yes n/a n/a Yes
Software
BREW - Yes n/a n/a -
Games Yes Yes n/a n/a -
Voice
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) - - n/a n/a Yes
Push-To-Talk - - Yes - -
Speaker Phone - Yes Yes Yes -
  Ericsson T39 Samsung SCH-A990 Kyocera DuraForce XD Nubia Red Magic 3 / 3S Samsung SPH-N270 (Matrix Phone)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T39 Samsung SCH-A990 Kyocera DuraForce XD Nubia Red Magic 3 / 3S Samsung SPH-N270 (Matrix Phone)

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