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Phone Samsung SGH-X640 BlackBerry 8700 Samsung Galaxy J2 / J2 Pure / J2 Dash Pantech Duo C810 Nubia RedMagic 5S
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 5" diag.
16 : 9
2.2" diag.
4 : 3
6.7" diag.
19.5 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
320 x 240 pixels
LCD (TFT/TFD)
540 x 960 pixels
(~220 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
1080 x 2340 pixels
(~388 ppi)
AMOLED
Display Refresh ? ? 60 Hz ? 144 Hz
Battery 800 mAh 1,100 mAh 2,600 mAh 1,320 mAh 4,500 mAh
Processor ? ? 1.4 GHz Samsung Exynos 7570 ARM 920t PXA27x Qualcomm Snapdragon 865
RAM ? ? 2 GB ? 8 GB *
Storage ? raw hardware ? raw hardware 16 GB ? raw hardware 128 GB *
Main Camera Yes - 8 megapixel 1 megapixel 64 megapixel
Wide Camera - - - - 8 megapixel
Tele Camera - - - - -
Video Capture - - 1080p HD QVGA (320 x 240) 4K UHD
Front Camera - - 5 megapixel - 8 megapixel
Weight 3 oz
(85g)
4.7 oz
(133g)
5.43 oz
(154g)
3.88 oz
(110g)
7.76 oz
(220g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.3" x 2.7" x 0.8"
(109 x 69 x 20.3 mm)
5.65" x 2.84" x 0.35"
(144 x 72 x 8.9 mm)
4.01" x 1.97" x 0.78"
(102 x 50 x 19.8 mm)
6.64" x 3.07" x 0.38"
(169 x 78 x 9.8 mm)
Form Factor Clamshell Slab Slab Slide Slab
Platform / OS (proprietary) BlackBerry OS Android Windows Mobile Standard Android
Network Bands

GSM: 900, 1800, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 2, 3, 4, 5, 7, 12, 14, 66, 71

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

5G: 41, 78

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 18, 19, 20, 26, 34, 38, 40, 41

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

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology GPRS EDGE LTE (Cat 4) HSDPA 1.8 NR (5G)
Features 
Fingerprint Reader - - - - Yes
Flashlight - - Yes - Yes
Accessibility
Hearing Aid Compatible - - Yes
M3, T3 (mostly tele-coil compatible)
- -
Multiple Languages Yes n/a n/a n/a n/a
TTY/TDD (Digital) - Yes Yes - -
Alerts
Ringer Profiles - Yes - Yes -
Connectivity
Bluetooth - Yes Yes Yes Yes
USB - Yes Yes
Micro-USB
Yes Yes
USB Type C
Wi-Fi - - Yes
4 (802.11 b,g,n)
- Yes
6 (802.11 a,ac,ax,b,g,n)
Contacts
Picture ID Yes n/a n/a n/a n/a
Ringer ID Yes n/a n/a n/a n/a
Voice Dialing - n/a n/a n/a n/a
Customization
Custom Graphics Yes n/a n/a n/a n/a
Custom Ringtones Yes n/a n/a n/a n/a
Real-Music Ringers - n/a n/a n/a n/a
Data & Network
Data Tethering - n/a n/a n/a n/a
Dual-SIM - - - - Yes
WAP / Web Browser Yes n/a n/a n/a n/a
Input
Predictive Text Entry Yes n/a n/a n/a n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - Yes -
Touch Screen - - Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot - - Yes Yes -
Messaging
Email Client - n/a n/a n/a n/a
EMS / Picture Messaging Yes n/a n/a n/a n/a
Instant Messaging - n/a n/a n/a n/a
MMS Yes n/a n/a n/a n/a
Text Messaging Templates Yes n/a n/a n/a n/a
Music
Headphone Jack (3.5mm) - - Yes - Yes
Music Player - n/a n/a n/a n/a
Stereo Speakers - - - - Yes
Photo & Video
TV Output - - - - Yes
Power
Fast Charging - - - - Yes
Productivity
Alarm Yes n/a n/a n/a n/a
Calculator Yes n/a n/a n/a n/a
Calendar Yes n/a n/a n/a n/a
To-Do List Yes n/a n/a n/a n/a
Voice Memo Yes n/a n/a n/a n/a
Software
Games Yes n/a n/a n/a n/a
Java (J2ME) Yes n/a n/a n/a n/a
Voice
Headset Jack (2.5 mm) Yes n/a n/a n/a n/a
Speaker Phone Yes Yes Yes Yes Yes
  Samsung SGH-X640 BlackBerry 8700 Samsung Galaxy J2 / J2 Pure / J2 Dash Pantech Duo C810 Nubia RedMagic 5S
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X640 BlackBerry 8700 Samsung Galaxy J2 / J2 Pure / J2 Dash Pantech Duo C810 Nubia RedMagic 5S

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