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Phone Nokia 6555 Samsung SCH-A990 Samsung Galaxy J7 (2018) / J7 Refine / J7 V 2nd Gen / J7 Star / J7 Aura / J7 Crown Nokia X100 Samsung UpStage M620
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2" diag.
4 : 3
? 5.5" diag.
16 : 9
6.7" diag.
20 : 9
2.1" diag.
4 : 3
Display Resolution & Type 240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
720 x 1280 pixels
(~267 ppi)
LCD (TFT/TFD)
1080 x 2400 pixels
(~395 ppi)
LCD (TFT/TFD)
176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 60 Hz ?
Battery 1,020 mAh 1,000 mAh 3,300 mAh 4,470 mAh 620 mAh
Processor ? ? 1.6 GHz Samsung Exynos 7884 2 GHz Qualcomm Snapdragon 480 ?
RAM ? ? 2 GB 6 GB ?
Storage ? raw hardware ? raw hardware 16 GB * 128 GB ? raw hardware
Main Camera 1 megapixel 3 megapixel 13 megapixel 48 megapixel 1 megapixel
Wide Camera - - - 5 megapixel -
Tele Camera - - - - -
Video Capture QCIF (176 x 144) ? 1080p HD 1080p HD ?
Front Camera - - 13 megapixel 16 megapixel -
Weight 3.42 oz
(97g)
4.4 oz
(125g)
6.38 oz
(181g)
7.65 oz
(217g)
2.57 oz
(73g)
Dimensions 3.92" x 1.74" x 0.77"
(100 x 44 x 19.6 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
6.03" x 3" x 0.34"
(153 x 76 x 8.6 mm)
6.75" x 3.14" x 0.36"
(171 x 80 x 9.1 mm)
4.07" x 1.73" x 0.37"
(103 x 44 x 9.4 mm)
Form Factor Clamshell Clamshell Slab Slab Slab
Platform / OS (proprietary) (proprietary) Android Android (proprietary)
Network Bands

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

*

CDMA: 850, 1900

4G LTE: 2, 3, 4, 5, 12, 13, 14, 25, 26, 41, 66, 71

WCDMA: 1, 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

5G: 25, 41, 66, 71

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 20, 25, 26, 38, 39, 40, 41, 66, 71

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology WCDMA (UMTS) EVDO r0 LTE (Cat 6) NR (5G) EVDO r0
Features 
Barometer - - - Yes -
Fingerprint Reader - - - Yes
stand-alone
-
Flashlight - Yes Yes Yes -
GPS / Location - Yes n/a n/a -
Accessibility
Adjustable Text Size Yes - n/a n/a Yes
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M4 (very compatible)
Multiple Languages Yes Yes n/a n/a -
TTY/TDD (Digital) Yes Yes Yes Yes Yes
Alerts
Extra Display Yes Yes - - Yes
Ringer Profiles Yes - - - -
Connectivity
Bluetooth Yes Yes Yes Yes Yes
NFC - - - Yes -
USB Yes
Micro-USB
Yes Yes
Micro-USB
Yes
USB Type C
Yes
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 ac,b,g,n)
-
Contacts
Picture ID Yes Yes n/a n/a Yes
Ringer ID Yes Yes n/a n/a Yes
Voice Dialing Yes Yes n/a n/a Yes
Customization
Custom Graphics Yes Yes n/a n/a Yes
Custom Ringtones Yes Yes n/a n/a Yes
Real-Music Ringers Yes Yes n/a n/a Yes
Data & Network
Data Tethering Yes Yes n/a n/a -
External Antenna Jack - - n/a n/a Yes
WAP / Web Browser Yes Yes n/a n/a Yes
Input
Predictive Text Entry Yes Yes n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Touch Screen - - Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes Yes Yes Yes
Messaging
Email Client Yes - n/a n/a -
EMS / Picture Messaging - Yes n/a n/a -
Instant Messaging Yes - n/a n/a Yes
MMS Yes Yes n/a n/a Yes
Text Messaging Templates Yes Yes n/a n/a Yes
Music
FM Radio - - - Yes -
Headphone Jack (3.5mm) - - Yes Yes -
Music Player Yes Yes n/a n/a Yes
Stereo Speakers - Yes - - -
Photo & Video
TV Output - Yes - - -
Power
Fast Charging - - - 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 Yes - 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 Yes
Java (J2ME) Yes - n/a n/a Yes
Voice
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) Yes - n/a n/a -
Push-To-Talk Yes * - - - -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Nokia 6555 Samsung SCH-A990 Samsung Galaxy J7 (2018) / J7 Refine / J7 V 2nd Gen / J7 Star / J7 Aura / J7 Crown Nokia X100 Samsung UpStage M620
  X > < X > < X > < X > < X

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

 
Phone Nokia 6555 Samsung SCH-A990 Samsung Galaxy J7 (2018) / J7 Refine / J7 V 2nd Gen / J7 Star / J7 Aura / J7 Crown Nokia X100 Samsung UpStage M620

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