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Phone Nokia 2651 Samsung SGH-X640 Nokia 7.1 Sony Xperia XZ2 Samsung SGH-X507 / X506
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Not yet released Released
Specifications 
Display Size ? ? 5.8" diag.
19 : 9
5.7" diag.
18 : 9
?
Display Resolution & Type 128 x 128 pixels
LCD (STN)
128 x 160 pixels
LCD (TFT/TFD)
1080 x 2280 pixels
(~432 ppi)
LCD (TFT/TFD)
1080 x 2160 pixels
(~424 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 60 Hz ?
Battery 760 mAh 800 mAh 3,060 mAh 3,180 mAh 800 mAh
Processor ? ? Qualcomm Snapdragon 636 Qualcomm Snapdragon 845 ?
RAM ? ? 4 GB * 4 GB ?
Storage ? raw hardware ? raw hardware 64 GB * 64 GB ? raw hardware
Main Camera - Yes 12 megapixel 19 megapixel -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - 4K UHD 4K UHD -
Front Camera - - 8 megapixel 5 megapixel -
Weight 3.4 oz
(96g)
3 oz
(85g)
5.64 oz
(160g)
6.98 oz
(198g)
2.9 oz
(82g)
Dimensions 3.35" x 1.81" x 0.9"
(85 x 46 x 22.9 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
5.89" x 2.8" x 0.31"
(150 x 71 x 8 mm)
6.02" x 2.83" x 0.44"
(153 x 72 x 11.1 mm)
3.3" x 1.75" x 0.75"
(84 x 44 x 19.1 mm)
Form Factor Clamshell Clamshell Slab Slab Clamshell
Platform / OS (proprietary) (proprietary) Android Android (proprietary)
Network Bands

GSM: 850, 1900

GSM: 900, 1800, 1900

4G LTE: 2, 4, 5, 7, 12, 13, 17, 28, 38, 66

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 29, 38, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 850, 900, 1800, 1900

Data Technology GPRS GPRS LTE (Cat 6) LTE (Cat 18) EDGE
Features 
Fingerprint Reader - - Yes
stand-alone
Yes
stand-alone
-
Flashlight - - Yes Yes -
Water-Resistant - - - Yes
IPX5 (direct spray)
-
Accessibility
Hearing Aid Compatible - - - Yes -
Multiple Languages Yes Yes n/a n/a Yes
TTY/TDD (Digital) - - Yes - Yes
Alerts
Extra Display - - - - Yes
Connectivity
Bluetooth -
-
Yes
Classic Audio
Yes
Classic Audio
-
NFC - - Yes Yes -
USB - - Yes
USB Type C
Yes
USB Type C
Yes
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
Customization
Custom Graphics Yes Yes n/a n/a Yes
Custom Ringtones Yes Yes n/a n/a Yes
Real-Music Ringers - - n/a n/a Yes
Data & Network
Data Tethering - - n/a n/a Yes
Dual-SIM - - Yes 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
Touch Screen - - Yes Yes -
Memory
Memory Card Slot - - Yes Yes -
Messaging
Email Client Yes - n/a n/a Yes *
EMS / Picture Messaging Yes Yes n/a n/a Yes
Instant Messaging - - n/a n/a Yes
MMS Yes Yes n/a n/a Yes
Text Messaging Templates - Yes n/a n/a Yes
Music
Headphone Jack (3.5mm) - - Yes - -
Stereo Speakers - - - Yes -
Photo & Video
DLNA - - - Yes -
Miracast - - - Yes -
Power
Fast Charging - - Yes Yes -
Wireless 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 -
Voice Memo - Yes n/a n/a Yes
Software
Games Yes Yes n/a n/a Yes
Java (J2ME) Yes Yes n/a n/a Yes
Voice
HD Voice - - - Yes -
Headset Jack (2.5 mm) - Yes n/a n/a Yes
Speaker Phone - Yes Yes Yes Yes
  * Some versions only
  Nokia 2651 Samsung SGH-X640 Nokia 7.1 Sony Xperia XZ2 Samsung SGH-X507 / X506
  X > < X > < X > < X > < X

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

 
Phone Nokia 2651 Samsung SGH-X640 Nokia 7.1 Sony Xperia XZ2 Samsung SGH-X507 / X506

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