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Phone Samsung Jitterbug J / SPH-A310 Nokia Lumia 521 / 520 Sony Xperia Z3 CAT S61 T-Mobile REVVL 4
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
4" diag.
5 : 3
5.2" diag.
16 : 9
5.2" diag.
16 : 9
6.2" diag.
19 : 9
Display Resolution & Type 176 x 220 pixels
(~134 ppi)
LCD (Color)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
720 x 1520 pixels
(~270 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 60 Hz 60 Hz
Battery ? 1,430 mAh 3,100 mAh 4,500 mAh 3,500 mAh
Processor ? 1 GHz Qualcomm Snapdragon S4 MSM8270 2.5 GHz Qualcomm Snapdragon 801 (MSM8974AC) 2.2 GHz Qualcomm Snapdragon 630 2 GHz MediaTek Helio A22 (MT6761)
RAM ? 512 MB 3 GB 4 GB 2 GB
Storage ? raw hardware 8 GB 16 GB 64 GB 32 GB
Main Camera - 5 megapixel 20 megapixel 16 megapixel 13 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - 720p HD 4K UHD 4K UHD 1080p HD
Front Camera - - 2 megapixel 8 megapixel 5 megapixel
Weight 3.99 oz
(113g)
4.39 oz
(124g)
5.36 oz
(152g)
9.03 oz
(256g)
5.59 oz
(158g)
Dimensions 3.87" x 2.16" x 0.97"
(98 x 55 x 24.6 mm)
4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
5.75" x 2.83" x 0.29"
(146 x 72 x 7.3 mm)
5.91" x 2.99" x 0.51"
(150 x 76 x 13 mm)
6.26" x 2.99" x 0.32"
(159 x 76 x 8.1 mm)
Form Factor Clamshell Slab Slab Slab Slab
Platform / OS (proprietary) Windows Android Android Android
Network Bands

CDMA: 850, 1900

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

4G LTE: 2, 4, 12

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 25, 26, 28, 29, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 7, 12, 25, 26, 41, 66, 71

WCDMA: 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology - HSPA+ 21 LTE (Cat 4) LTE (Cat 13) LTE (Cat 6)
Features 
Barometer - - - Yes -
Fingerprint Reader - - - - Yes
stand-alone
Flashlight - - - Yes Yes
GPS / Location Yes n/a n/a n/a n/a
Ruggedized - - Yes Yes -
Water-Resistant - - Yes
IPX8 (SCUBA)
Yes
IPX8 (SCUBA)
-
Accessibility
Adjustable Text Size - n/a n/a n/a n/a
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M3, T4 (very tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages - n/a n/a n/a n/a
TTY/TDD (Digital) - Yes Yes - Yes
Alerts
Extra Display Yes - - - -
Connectivity
Bluetooth Yes Yes Yes Yes Yes
Mobile Hotspot - n/a n/a n/a n/a
NFC - - Yes Yes -
USB - Yes Yes
Micro-USB
Yes
USB Type C
Yes
USB Type C
Wi-Fi - Yes Yes Yes
5 (802.11 a,ac,b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
Contacts
Picture ID - n/a n/a n/a n/a
Ringer ID - n/a n/a n/a n/a
Voice Dialing Yes n/a n/a n/a n/a
Customization
Custom Graphics - n/a n/a n/a n/a
Custom Ringtones - 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 - n/a n/a n/a n/a
Input
Predictive Text Entry - n/a n/a n/a n/a
Side Keys Yes Yes Yes Yes Yes
Touch Screen - Yes
Capacitive
Yes
Capacitive
Yes Yes
Capacitive
Memory
Memory Card Slot - Yes Yes Yes Yes
Messaging
Email Client - n/a n/a n/a n/a
Instant Messaging - n/a n/a n/a n/a
MMS - n/a n/a n/a n/a
Text Messaging Templates Yes n/a n/a n/a n/a
Music
FM Radio - - Yes Yes Yes
Headphone Jack (3.5mm) - Yes Yes Yes Yes
Music Player - n/a n/a n/a n/a
Stereo Speakers - - Yes - -
Photo & Video
DLNA - - Yes - -
Miracast - - Yes - -
TV Output - - Yes - -
Power
Fast Charging - - Yes Yes -
Productivity
Alarm - n/a n/a n/a n/a
Calculator - n/a n/a n/a n/a
Calendar - n/a n/a n/a n/a
To-Do List - n/a n/a n/a n/a
Voice Memo - n/a n/a n/a n/a
Software
Games - n/a n/a n/a n/a
Voice
HD Voice - - Yes - Yes
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Samsung Jitterbug J / SPH-A310 Nokia Lumia 521 / 520 Sony Xperia Z3 CAT S61 T-Mobile REVVL 4
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Jitterbug J / SPH-A310 Nokia Lumia 521 / 520 Sony Xperia Z3 CAT S61 T-Mobile REVVL 4

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